{"title":"Knauf Insulation","description":"","products":[{"product_id":"25mm-knauf-rocksilk-rs100-1-2mm-x-600mm","title":"25mm Knauf Rocksilk RS100  1.2mm x 600mm","description":"\u003cp\u003eThe Rocksilk® RS range is built around density rather than thickness, and RS100 sits high on that ladder at 100 kg\/m³. That is what the 25mm slab is really for: adding mass to a construction where there is very little depth available to work with, in floors, wall systems and roof build-ups across residential, commercial and industrial projects.\u003c\/p\u003e\n\u003cp\u003eSlabs measure 1200mm x 600mm and are supplied 12 per pack, covering 8.64m². Declared thermal resistance is 0.70 m²K\/W at a thermal conductivity of 0.034 W\/mK.\u003c\/p\u003e\n\u003cp\u003eAt this density the slab keeps its shape and its edge when cut, so thin sections and narrow strips stay square instead of tearing or slumping into the gap they are meant to fill. Where a thin layer is doing acoustic or fire duty rather than thermal duty, that dimensional stability is the difference between a clean, continuous layer and a compromised one.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRock mineral wool slab at a density of 100 kg\/m³\u003c\/li\u003e\n\u003cli\u003eDeclared thermal resistance of 0.70 m²K\/W\u003c\/li\u003e\n\u003cli\u003eThermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli\u003e1200mm x 600mm slabs, 12 per pack covering 8.64m²\u003c\/li\u003e\n\u003cli\u003eAdds density to floors, wall systems and roof build-ups where depth is limited\u003c\/li\u003e\n\u003cli\u003eHolds shape and edge definition when cut into thin sections\u003c\/li\u003e\n\u003cli\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli\u003eGeneric BRE Green Guide rating of A+\u003c\/li\u003e\n\u003cli\u003eVapour resistivity of 5.00 MNs\/g.m\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRS100 is chosen for its density; a lower-density Rocksilk® slab is not a like-for-like substitute\u003c\/li\u003e\n\u003cli\u003eCut with a large-bladed insulation knife or saw for a clean, square edge\u003c\/li\u003e\n\u003cli\u003eSlabs should be closely butted with no gaps to keep the layer continuous\u003c\/li\u003e\n\u003cli\u003eThin layers are less forgiving of poor alignment, so take care at joints and perimeters\u003c\/li\u003e\n\u003cli\u003eNot a decorative surface\u003c\/li\u003e\n\u003cli\u003eStore under cover, off the ground and protected from the weather\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52653848625486,"sku":"IUK01682","price":50.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs100-building-slab-25mm-1-2-x-600mm-iuk01682-mineral-fibre-insulation-1217946900.png?v=1769182452"},{"product_id":"50mm-knauf-rocksilk-rs100-1-2mm-x-600mm","title":"50mm Knauf Rocksilk RS100  1.2mm x 600mm","description":"\u003cp\u003eRock mineral wool melts above 1000°C, which is what puts RS100 in critical areas of a building rather than general ones. Non-combustibility tells you a material will not feed a fire. A melting point that high tells you it is still doing its job well into one, and that is the property specifiers are buying when they choose rock over other mainstream insulants.\u003c\/p\u003e\n\u003cp\u003e50mm Knauf Rocksilk® RS100 is a rock mineral wool slab at a density of 100 kg\/m³, classified Euroclass A1 to EN 13501-1. Slabs measure 1200mm x 600mm and are supplied 6 per pack, covering 4.32m². Declared thermal resistance is 1.45 m²K\/W at a thermal conductivity of 0.034 W\/mK.\u003c\/p\u003e\n\u003cp\u003eAt 50mm it is commonly found in separating constructions, partitions and light steel frame walls, the places where fire performance and sound transfer are both under scrutiny.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRock mineral wool with a melting temperature above 1000°C\u003c\/li\u003e\n\u003cli\u003eProvides longer periods of fire resistance than other mainstream insulants\u003c\/li\u003e\n\u003cli\u003eEuroclass A1 reaction to fire classification to EN 13501-1\u003c\/li\u003e\n\u003cli\u003eDensity of 100 kg\/m³\u003c\/li\u003e\n\u003cli\u003eDeclared thermal resistance of 1.45 m²K\/W\u003cbr\u003eThermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli\u003e1200mm x 600mm slabs, 6 per pack covering 4.32m²\u003c\/li\u003e\n\u003cli\u003eSuited to separating constructions, partitions and light steel frame walls\u003c\/li\u003e\n\u003cli\u003eDeclaration of Performance R4208MPCPR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReaction to fire and fire resistance are different things: A1 describes the material, while a fire resistance period belongs to the tested system\u003c\/li\u003e\n\u003cli\u003eCheck the system specification before substituting RS100 into a fire-rated build-up\u003c\/li\u003e\n\u003cli\u003eSlabs need a tight fit against framing members, with no voids left at the edges\u003c\/li\u003e\n\u003cli\u003eRot proof, non-hygroscopic and will not sustain vermin\u003c\/li\u003e\n\u003cli\u003eCuts cleanly with a saw or large-bladed knife\u003c\/li\u003e\n\u003cli\u003eKeep slabs dry and covered while stored on site\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52653849182542,"sku":"IUK01683","price":48.56,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs100-building-slab-25mm-1-2-x-600mm-iuk01682-mineral-fibre-insulation-1217946900.png?v=1769182452"},{"product_id":"75mm-knauf-rocksilk-rs100-1-2mm-x-600mm","title":"75mm Knauf Rocksilk RS100  1.2mm x 600mm","description":"\u003cp\u003eNoise travelling between flats, between offices or between floors of the same house is a structural problem, not a surface one, and it is solved inside the construction rather than on it. 75mm Knauf Rocksilk® RS100 is specified into separating floors, internal floors and partitions for exactly that reason: to cut transmission between spaces in multi-storey and multi-occupancy buildings.\u003c\/p\u003e\n\u003cp\u003eSlabs are 1200mm x 600mm, supplied 4 per pack and covering 2.88m². Declared thermal resistance is 2.20 m²K\/W at a thermal conductivity of 0.034 W\/mK.\u003c\/p\u003e\n\u003cp\u003ePerformance of that kind only counts if it lasts. The slab will not slump or degrade, so the layer installed on day one is the layer still working in twenty years, without settlement opening voids at the top of a partition or along a joist run where the sound would then find its way through.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReduces noise transmission between spaces in multi-storey and multi-occupancy buildings\u003c\/li\u003e\n\u003cli\u003eSpecified into separating floors, internal floors and partitions\u003c\/li\u003e\n\u003cli\u003eDeclared thermal resistance of 2.20 m²K\/W\u003c\/li\u003e\n\u003cli\u003eThermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli\u003eDensity of 100 kg\/m³\u003c\/li\u003e\n\u003cli\u003e1200mm x 600mm slabs, 4 per pack covering 2.88m²\u003c\/li\u003e\n\u003cli\u003eWill not slump or degrade, maintaining performance for the life of the building\u003c\/li\u003e\n\u003cli\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli\u003eHolds the Indoor Air Comfort Gold certificate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInsulation reduces sound transmission as part of a construction; on its own it does not soundproof a space\u003cbr\u003eSound reduction figures belong to the tested system, so work to the system specification\u003c\/li\u003e\n\u003cli\u003eVoids undermine acoustic performance faster than they undermine thermal performance\u003c\/li\u003e\n\u003cli\u003eFill fully around noggins, services and penetrations rather than working around them\u003c\/li\u003e\n\u003cli\u003eMade with ECOSE® Technology, containing no added formaldehyde or phenol\u003c\/li\u003e\n\u003cli\u003ePackaging is short-term protection only; store under cover and off the ground\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52653849641294,"sku":"IUK01684","price":47.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs100-building-slab-25mm-1-2-x-600mm-iuk01682-mineral-fibre-insulation-1217946900.png?v=1769182452"},{"product_id":"100mm-knauf-rocksilk-rs100-1-2mm-x-600mm","title":"100mm Knauf Rocksilk RS100  1.2mm x 600mm","description":"\u003cp\u003e100mm is the thickest Rocksilk® RS100 slab and the strongest thermally, with a declared thermal resistance of 2.90 m²K\/W at a thermal conductivity of 0.034 W\/mK. Slabs are 1200mm x 600mm, supplied 3 per pack and covering 2.16m², with 16 packs to a pallet giving 34.56m².\u003c\/p\u003e\n\u003cp\u003eWhere it earns its place is breadth of use. The same slab works in ground floors, internal floors, roof build-ups, wall systems and frame construction, across residential, commercial and industrial projects. On a site running several of those elements at once, that means one product on the order, one pallet to manage and one specification to check rather than four.\u003c\/p\u003e\n\u003cp\u003eGetting the depth right is what makes the declared figure real. The slab should fill the joist, rafter or stud depth it sits in, at full thickness, without being squeezed into something shallower.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHighest thermal resistance in the Rocksilk® RS100 range at 2.90 m²K\/W\u003c\/li\u003e\n\u003cli\u003eThermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli\u003eDensity of 100 kg\/m³\u003c\/li\u003e\n\u003cli\u003eOne slab covering ground floors, internal floors, roofs, wall systems and frame construction\u003c\/li\u003e\n\u003cli\u003eSuitable for residential, commercial and industrial projects\u003c\/li\u003e\n\u003cli\u003e1200mm x 600mm slabs, 3 per pack covering 2.16m²\u003c\/li\u003e\n\u003cli\u003e16 packs per pallet giving 34.56m² per pallet\u003c\/li\u003e\n\u003cli\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli\u003eMade in Britain, EUCEB certified and DECLARE 'Red List Free'\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSlab thickness should match the depth of the joists, rafters or studs it fills\u003c\/li\u003e\n\u003cli\u003eCompressing the slab into a shallower space means it will not perform as declared\u003c\/li\u003e\n\u003cli\u003eInstallation quality drives the outcome: close butting and secure fixing matter as much as the declared figure\u003c\/li\u003e\n\u003cli\u003eEnvironmental Product Declaration EPD-IES-0031081 is published for the product\u003c\/li\u003e\n\u003cli\u003eNot a decorative surface\u003c\/li\u003e\n\u003cli\u003eCover slabs, keep them off the ground and protect from the weather if stored on site\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52653850198350,"sku":"IUK01656","price":46.54,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs100-building-slab-25mm-1-2-x-600mm-iuk01682-mineral-fibre-insulation-1217946900.png?v=1769182452"},{"product_id":"50mm-knauf-rocksilk-rs80-building-slab-1-2m-x-600mm","title":"50mm Knauf Rocksilk RS80 Building Slab  1.2m x 600mm","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cdiv class=\"_chunkWrapper_yu34g_39\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"0\"\u003e50mm Knauf \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"11\"\u003eRocksilk® RS80 Building Slab is a \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"45\"\u003ehigh-density rock mineral wool slab \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"81\"\u003especified where the mechanical \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"112\"\u003echaracteristics of the insulation \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"146\"\u003ematter as much as its thermal figures. \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"185\"\u003eKnauf Insulation positions RS80 for \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"221\"\u003emulti-application use and for \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"251\"\u003efabrication work, and it is used \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"284\"\u003eextensively by OEMs building up \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"316\"\u003ethermal, acoustic and fire products \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"352\"\u003ewhere the slab has to hold its form \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"388\"\u003eunder handling and assembly.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"_chunkWrapper_yu34g_39\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"0\"\u003eAt 50mm \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"8\"\u003ethe slab declares 1.45 m²K\/W of thermal \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"48\"\u003eresistance on a conductivity of 0.034 \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"86\"\u003eW\/mK. On site it goes into internal \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"122\"\u003ewalls and partitions, light steel frame \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"162\"\u003einfill, ground and internal floors, \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"198\"\u003ewith the density giving a firmer slab \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"236\"\u003eto cut, position and retain than \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"269\"\u003elighter grades of the same thickness.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"_chunkWrapper_yu34g_39\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"0\"\u003eS\u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"1\"\u003elabs measure 1200mm x 600mm and are \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"37\"\u003esupplied 6 to a pack covering 4.32m², \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"75\"\u003ewith 16 packs to a pallet for 69.12m² \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"113\"\u003eof coverage.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"_chunkWrapper_yu34g_39\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"2\"\u003eBenefits\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"_chunkWrapper_yu34g_39\"\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"2\"\u003eDeclared \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"11\"\u003ethermal resistance of 1.45 m²K\/W at \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"47\"\u003e50mm\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"47\"\u003eDeclared thermal conductivity of \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"87\"\u003e0.034 W\/mK\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"87\"\u003eHigh-density grade \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"119\"\u003especified where mechanical \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"146\"\u003echaracteristics and thermal performance \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"186\"\u003eare both required\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"186\"\u003eEuroclass A1 \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"219\"\u003ereaction to fire to BS EN 13501-1, the \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"258\"\u003ehighest classification available\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"258\"\u003eUsed \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"298\"\u003eextensively in OEM fabrication of \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"332\"\u003ethermal, acoustic and fire products\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"370\"\u003eManufactured with ECOSE® Technology, a \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"409\"\u003eplant-based binder with no added \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"442\"\u003eformaldehyde or phenol\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"442\"\u003eFirmer to cut \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"481\"\u003eand position than lighter grades at the \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"521\"\u003esame thickness\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"521\"\u003e6 slabs per pack \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"555\"\u003ecovering 4.32m², 16 packs per pallet \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"592\"\u003egiving 69.12m²\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"_chunkWrapper_yu34g_39\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"2\"\u003eGood to know\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"_chunkWrapper_yu34g_39\"\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"4\"\u003eGrade is chosen on density, not thermal figures.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"4\"\u003e RS60, RS80, RS100 and \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"77\"\u003eRS140 all declare 0.034 W\/mK, so at \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"113\"\u003e50mm they all give 1.45 m²K\/W. Specify \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"152\"\u003eRS80 over a lighter grade for its \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"186\"\u003emechanical characteristics, not for a \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"224\"\u003ethermal gain that is not there.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"260\"\u003eFabrication use is a Knauf-stated application.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"260\"\u003e If the slab is being cut, \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"335\"\u003elaminated or built into an assembly \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"371\"\u003erather than installed loose, the higher \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"411\"\u003egrade is doing real work.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"441\"\u003eReaction to fire is a material classification.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"441\"\u003e A1 describes the slab's own \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"518\"\u003ebehaviour in fire and does not \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"549\"\u003eestablish a fire resistance period for \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"588\"\u003ethe element it goes into.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"588\"\u003eSound \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"622\"\u003eabsorption happens within the void; the \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"662\"\u003esound reduction figure belongs to the \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"700\"\u003etested partition or floor as a whole.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"740\"\u003eUnfaced slab, requiring a lining, board \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"780\"\u003eor deck finish. It is not a wearing or \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"819\"\u003edecorative surface.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"819\"\u003eStore dry and \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"855\"\u003eflat, indoors or under cover and off \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"892\"\u003ethe ground, and keep packs out of \u003c\/span\u003e\u003cspan class=\"_animating_yu34g_10\" data-newtext-seq=\"926\"\u003eprolonged sunlight.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52653852361038,"sku":"IUK01676","price":39.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs80-building-slab-1200mm-x-600mm-50mm-iuk01676-mineral-fibre-insulation-1172611532.jpg?v=1749655687"},{"product_id":"75mm-knauf-rocksilk-rs80-building-slab-1-2m-x-600mm","title":"75mm Knauf Rocksilk RS80 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eBoth handover rules held. Here is how RS80 stays clear of RS60, which sits directly beneath it.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eRS80's territory is manufacturer-given, not invented.\u003c\/strong\u003e Knauf describes RS60 as designed for multiple thermal, fire protection and acoustic applications. It describes RS80 as designed for multiple applications \u003cem\u003eor for fabrication where mechanical characteristics and thermal performance are key\u003c\/em\u003e, and labels it high-density against RS60's mid-density. So RS80 leads on mechanical characteristics, fabrication and OEM use throughout. RS60's vocabulary (knitting at joints, friction fit, make-up depth, closing air gaps) is retired for this range and not reused.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eOne thing you should read before publishing: \u003cstrong\u003eat 50, 75 and 100mm, RS80 declares exactly the same thermal resistance as RS60.\u003c\/strong\u003e Both are 0.034 W\/mK. The pages are written to be straight about that, because pretending otherwise is where these two ranges would start misleading people.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch2 dir=\"auto\" class=\"text-text-100 mt-3 -mb-1 text-[1.375rem] font-bold\"\u003eKnauf Rocksilk® RS80 Building Slab\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eSource: Knauf Insulation Rocksilk® Building Slabs datasheet, October 2025 (KINE4596DAT-V1025), plus Knauf's Rocksilk® RS80 product record. R-values are declared. Datasheet and product record agree on all three SKUs.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch3 dir=\"auto\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003e50mm Knauf Rocksilk® RS80 Building Slab 1.2m x 600mm\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eMain Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e50mm Knauf Rocksilk® RS80 Building Slab is a high-density rock mineral wool slab specified where the mechanical characteristics of the insulation matter as much as its thermal figures. Knauf Insulation positions RS80 for multi-application use and for fabrication work, and it is used extensively by OEMs building up thermal, acoustic and fire products where the slab has to hold its form under handling and assembly.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eAt 50mm the slab declares 1.45 m²K\/W of thermal resistance on a conductivity of 0.034 W\/mK. On site it goes into internal walls and partitions, light steel frame infill, ground and internal floors, with the density giving a firmer slab to cut, position and retain than lighter grades of the same thickness.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs measure 1200mm x 600mm and are supplied 6 to a pack covering 4.32m², with 16 packs to a pallet for 69.12m² of coverage.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal resistance of 1.45 m²K\/W at 50mm\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHigh-density grade specified where mechanical characteristics and thermal performance are both required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 reaction to fire to BS EN 13501-1, the highest classification available\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eUsed extensively in OEM fabrication of thermal, acoustic and fire products\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured with ECOSE® Technology, a plant-based binder with no added formaldehyde or phenol\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFirmer to cut and position than lighter grades at the same thickness\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e6 slabs per pack covering 4.32m², 16 packs per pallet giving 69.12m²\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eGrade is chosen on density, not thermal figures.\u003c\/strong\u003e RS60, RS80, RS100 and RS140 all declare 0.034 W\/mK, so at 50mm they all give 1.45 m²K\/W. Specify RS80 over a lighter grade for its mechanical characteristics, not for a thermal gain that is not there.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFabrication use is a Knauf-stated application.\u003c\/strong\u003e If the slab is being cut, laminated or built into an assembly rather than installed loose, the higher grade is doing real work.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eReaction to fire is a material classification.\u003c\/strong\u003e A1 describes the slab's own behaviour in fire and does not establish a fire resistance period for the element it goes into.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSound absorption happens within the void; the sound reduction figure belongs to the tested partition or floor as a whole.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eUnfaced slab, requiring a lining, board or deck finish. It is not a wearing or decorative surface.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore dry and flat, indoors or under cover and off the ground, and keep packs out of prolonged sunlight.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eMeta Description\u003c\/strong\u003e (144 characters)\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e50mm Knauf Rocksilk® RS80 high-density rock mineral wool slab. R 1.45 m²K\/W, Euroclass A1, 6 per pack. Competitive pricing and free UK delivery.\u003c\/p\u003e\n\u003chr class=\"border-border-200 border-t-0.5 my-3 mx-1.5\"\u003e\n\u003ch3 dir=\"auto\" class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003e75mm Knauf Rocksilk® RS80 Building Slab 1.2m x 600mm\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eMain Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eAt 75mm, Knauf Rocksilk® RS80 Building Slab declares 2.20 m²K\/W of thermal resistance and is the thickness Knauf uses as the reference unit for the range's published environmental figures. It suits deeper horizontal zones: intermediate floors, separating floors between dwellings, and pitched roof constructions at rafter level.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eRock mineral wool at this density brings a melting temperature above 1000°C and a stable, self-supporting slab that stays where it was placed across a joist or rafter span. The material is odourless, rot proof and non-hygroscopic, will not sustain vermin, and will not encourage the growth of fungi, mould or bacteria.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe 1200mm x 600mm slab is supplied 4 to a pack covering 2.88m², with 16 packs to a pallet.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal resistance of 2.20 m²K\/W at 75mm\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMelting temperature above 1000°C\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNon-combustible, achieving Euroclass A1 reaction to fire to BS EN 13501-1\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAbsorbs airborne sound within floor, ceiling and partition voids\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOdourless, rot proof and non-hygroscopic, and will not sustain vermin, fungi, mould or bacteria\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFibres independently certified by EUCEB against Note Q exoneration criteria\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured under ISO 9001, ISO 14001, ISO 45001 and ISO 50001 management systems\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e4 slabs per pack covering 2.88m², 16 packs per pallet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSeparating floors are tested assemblies.\u003c\/strong\u003e Where the floor has to satisfy Approved Document E, build to the tested system specification rather than substituting a grade or thickness on paper.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eTwo EPDs exist for RS80.\u003c\/strong\u003e Environmental figures differ between the faced product (S-P-04004, declared at 75mm) and the unfaced product (EPD-IES-0031082). Unfaced slabs are what is supplied here, so quote the unfaced declaration.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eRetain the slab at rafter level.\u003c\/strong\u003e On a pitched roof the slab needs restraint between rafters so it stays in contact with the framing over the life of the roof.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eTrim slabs slightly oversize so they sit tight between joists rather than relying on fixings to hold them.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eU-values for the floor or roof build-up require calculation to BS EN ISO 6946:2017 using BR443:2019 guidance.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCover exposed slabs at the end of the working day and in heavy rain. Damaged, wet or contaminated slabs should not be installed.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52653854163278,"sku":"IUK01677","price":38.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs80-building-slab-1200mm-x-600mm-75mm-iuk01677-mineral-fibre-insulation-1172611529.jpg?v=1749655678"},{"product_id":"100mm-knauf-rocksilk-rs80-building-slab-1-2m-x-600mm","title":"100mm Knauf Rocksilk RS80 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e100mm Knauf Rocksilk® RS80 Building Slab pairs the highest declared thermal resistance in the RS80 range, 2.90 m²K\/W, with the high-density build that defines the grade. Where a project calls for depth and a firmer slab in the same specification, this is the SKU that covers both.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eTypical destinations are pitched roofs at rafter level, suspended and internal ground floors, separating floors and timber or light steel frame walls with the depth to take a full 100mm layer. Fabricators also work at this thickness where an assembly needs to be built up from a slab that resists deformation during cutting and handling.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs are 1200mm x 600mm, supplied 3 to a pack covering 2.16m², with 16 packs to a pallet giving 34.56m². The product is covered by Declaration of Performance R4208MPCPR.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal resistance of 2.90 m²K\/W, the highest in the RS80 range\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHigh-density grade that resists deformation during cutting, handling and assembly\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNon-combustible, Euroclass A1 reaction to fire to BS EN 13501-1\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCovered by Declaration of Performance R4208MPCPR\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eUnfaced slabs carry the DECLARE Red List Free label\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured under BES 6001 (v4.0) 'Very Good' responsible sourcing certification, with around 35% recycled content\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e3 slabs per pack covering 2.16m², 16 packs per pallet giving 34.56m²\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eThickness sets the R-value; grade sets everything else.\u003c\/strong\u003e At 100mm, RS60, RS80, RS100 and RS140 all declare 2.90 m²K\/W. Move up a grade for density and mechanical characteristics, not for a thermal improvement.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eWeight per pack rises with grade.\u003c\/strong\u003e Three slabs to a pack against four in RS60 at the same thickness. Plan handling and pallet placement accordingly.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eA1 is a reaction to fire classification.\u003c\/strong\u003e It describes how the material behaves in fire and is not on its own a fire resistance period for the construction.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eModel the whole build-up to BS EN ISO 6946:2017 with BR443:2019 guidance. Thermal bridging at joists, rafters and junctions has to be accounted for, and a 100mm layer broken at abutments will underperform a well-fitted thinner one.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWhere the slab forms part of a system whose performance depends on characteristics not declared on the DoP, refer to Knauf Insulation's technical services team before specifying.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAll dimensions quoted are nominal. Store under cover, off the ground and never leave permanently exposed.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52653855375694,"sku":"IUK01678","price":37.73,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs80-building-slab-1200mm-x-600mm-100mm-iuk01678-mineral-fibre-insulation-1172611526.jpg?v=1749655571"},{"product_id":"50mm-knauf-rocksilk-rs140-1-2m-x-600mm","title":"50mm Knauf Rocksilk RS140  1.2m x 600mm","description":"\u003cp\u003eChoosing RS140 over a lighter Rocksilk® slab is not a thermal decision. At 50mm both give the same declared thermal resistance of 1.45 m²K\/W, because both share a thermal conductivity of 0.034 W\/mK. What changes is mass: RS140 packs 140 kg\/m³ of rock mineral wool into the same 50mm, and mass is what the specification is usually asking for.\u003c\/p\u003e\n\u003cp\u003eSlabs measure 1200mm x 600mm and are supplied 4 per pack, covering 2.88m².\u003c\/p\u003e\n\u003cp\u003eThat extra density does three jobs. It gives the slab more substance to work against airborne sound, it makes the slab mechanically firmer in service, and it puts more rock mineral wool in place where fire protection is part of the brief. If none of those apply to the project, a lighter slab will do the thermal work for less.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDensity of 140 kg\/m³, the highest in the Rocksilk® RS range\u003c\/li\u003e\n\u003cli\u003eDeclared thermal resistance of 1.45 m²K\/W\u003c\/li\u003e\n\u003cli\u003eThermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli\u003e1200mm x 600mm slabs, 4 per pack covering 2.88m²\u003c\/li\u003e\n\u003cli\u003eGreater mass in the same depth than lighter Rocksilk® slabs\u003c\/li\u003e\n\u003cli\u003eEuroclass A1 to EN 13501-1\u003c\/li\u003e\n\u003cli\u003eSuited to internal walls, partitions and separating constructions\u003c\/li\u003e\n\u003cli\u003eManufactured with ECOSE® Technology bio-based binder\u003c\/li\u003e\n\u003cli\u003eDeclaration of Performance R4208MPCPR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRS140 and lighter Rocksilk® slabs share the same thermal figures at the same thickness, so specify on density, not on R-value\u003c\/li\u003e\n\u003cli\u003eWhere a specification names a density, it is a requirement rather than a preference\u003c\/li\u003e\n\u003cli\u003eSlabs should be closely butted with no gaps left at joints or perimeters\u003c\/li\u003e\n\u003cli\u003eCut with a large-bladed insulation knife or saw\u003c\/li\u003e\n\u003cli\u003eOdourless, rot proof, non-hygroscopic and will not sustain vermin\u003c\/li\u003e\n\u003cli\u003eStore under cover, off the ground and protected from the weather\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52653856162126,"sku":"IUK01679","price":50.34,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs100-building-slab-25mm-1-2-x-600mm-iuk01682-mineral-fibre-insulation-1217946900.png?v=1769182452"},{"product_id":"75mm-knauf-rocksilk-rs140-1-2m-x-600mm","title":"75mm Knauf Rocksilk RS140  1.2m x 600mm","description":"\u003cp\u003eA 75mm RS140 slab is a solid thing to pick up, and that is the point. At 140 kg\/m³ the slab holds its shape through transport, handling and cutting, sits firmly where it is placed and resists the knocks that leave lighter mineral wool compressed or torn before it ever gets fixed.\u003c\/p\u003e\n\u003cp\u003eKnauf Rocksilk® RS140 at 75mm has a declared thermal resistance of 2.20 m²K\/W at a thermal conductivity of 0.034 W\/mK. Slabs are 1200mm x 600mm and supplied 3 per pack, covering 2.16m².\u003c\/p\u003e\n\u003cp\u003eKnauf lists the RS140 slab across ground floors, internal floors, separating floors, pitched roofs at rafter level, internal walls and partitions, and both light steel and timber frame walls. The density stays constant across all of them, which is what makes one slab workable in constructions with quite different demands.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDensity of 140 kg\/m³ gives the slab firmness and resistance to handling damage\u003c\/li\u003e\n\u003cli\u003eDeclared thermal resistance of 2.20 m²K\/W\u003c\/li\u003e\n\u003cli\u003eThermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli\u003e1200mm x 600mm slabs, 3 per pack covering 2.16m²\u003c\/li\u003e\n\u003cli\u003eOne slab specification covering floors, roofs at rafter level, partitions and frame walls\u003c\/li\u003e\n\u003cli\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli\u003eHolds the Indoor Air Comfort Gold certificate\u003c\/li\u003e\n\u003cli\u003eMade in Britain and EUCEB certified\u003c\/li\u003e\n\u003cli\u003eWill not slump or degrade over the life of the building\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAt this density the slabs are noticeably heavier than standard building slabs, so plan lifting and site handling\u003c\/li\u003e\n\u003cli\u003ePack coverage is lower than lighter slabs of the same thickness; order on m², not on pack count\u003cbr\u003eSlab thickness should match the depth of the framing it fills\u003c\/li\u003e\n\u003cli\u003eDo not compress the slab into a shallower space\u003c\/li\u003e\n\u003cli\u003eAvoid crushing edges and corners, and discard damaged slabs\u003c\/li\u003e\n\u003cli\u003eNot a decorative surface\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52653856883022,"sku":"IUK01680","price":54.78,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs140-building-slab-1200mm-x-600mm-75mm-iuk01680-mineral-fibre-insulation-1172611520.jpg?v=1749655453"},{"product_id":"100mm-knauf-rocksilk-rs140-1-2m-x-600mm","title":"100mm Knauf Rocksilk RS140  1.2m x 600mm","description":"\u003cp\u003eNothing in the Rocksilk® RS range puts more rock mineral wool into a square metre than this. RS140 is the densest slab Knauf produce in the range at 140 kg\/m³, and 100mm is its deepest section, which is why this particular slab turns up where fire protection is a named requirement rather than a by-product.\u003c\/p\u003e\n\u003cp\u003eDeclared thermal resistance is 2.90 m²K\/W at a thermal conductivity of 0.034 W\/mK. Slabs measure 1200mm x 600mm and are supplied 2 per pack, covering 1.44m², with 12 packs to a pallet.\u003c\/p\u003e\n\u003cp\u003eRock mineral wool is the reason it stands up in that role. It is non-combustible to Euroclass A1, the highest classification available, and Knauf's Environmental Product Declaration for RS140 is published separately under S-P-04009 for projects reporting embodied impact.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe greatest mass per square metre available in the Rocksilk® RS range\u003c\/li\u003e\n\u003cli\u003eDensity of 140 kg\/m³\u003c\/li\u003e\n\u003cli\u003eDeclared thermal resistance of 2.90 m²K\/W\u003c\/li\u003e\n\u003cli\u003eThermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli\u003e1200mm x 600mm slabs, 2 per pack covering 1.44m²\u003c\/li\u003e\n\u003cli\u003e12 packs per pallet giving 17.28m² per pallet\u003c\/li\u003e\n\u003cli\u003eEuroclass A1 to EN 13501-1\u003c\/li\u003e\n\u003cli\u003eEnvironmental Product Declaration S-P-04009 published for the product\u003c\/li\u003e\n\u003cli\u003eDECLARE 'Red List Free' and CE marked\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFire protection performance belongs to the tested system, not to the slab on its own\u003c\/li\u003e\n\u003cli\u003eCheck the system specification before substituting RS140 into a fire-rated construction\u003c\/li\u003e\n\u003cli\u003eCoverage per pack is the lowest in the range, so calculate quantities carefully before ordering\u003c\/li\u003e\n\u003cli\u003eSlabs are heavy at this thickness and density; allow for it in handling and storage\u003c\/li\u003e\n\u003cli\u003eInstallation quality drives the result: close butting and secure fixing matter as much as the figures\u003c\/li\u003e\n\u003cli\u003eKeep slabs covered, off the ground and out of the weather while on site\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52653857833294,"sku":"IUK01681","price":47.51,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs140-building-slab-1200mm-x-600mm-100mm-iuk01681-mineral-fibre-insulation-1172611517.jpg?v=1749655443"},{"product_id":"200mm-knauf-loft-roll-44-combi-cut-6-00m-x-1-14m-2-x-570mm-3-x-380mm","title":"200mm Knauf Loft Roll 44 Combi-cut 1140mm x 6.00m - 6.84m2 per pack","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eKnauf Loft Roll 44 (200mm) is a glass mineral wool loft insulation roll for insulating cold pitched roofs at ceiling level, and it can also be used between joists in suspended timber floors. As the thickest roll in the range, it is the preferred choice where maximum thermal performance is the priority. Used as a cross-laid layer over a 100mm base between the joists, it brings total depth to 300mm, comfortably beyond the 270mm depth commonly used to meet the 0.16 W\/m²K roof U-value target under Part L of the Building Regulations. For a fully maximised specification, two 200mm cross-laid layers over a 100mm base reach 500mm, taking the U-value down to around 0.09 W\/m²K, the level typically specified in new build to minimise heat loss over the lifetime of the building.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThermal conductivity is 0.044 W\/mK and thermal resistance is 4.50 m²K\/W, giving strong thermal performance across loft applications. As a glass mineral wool, it also offers a degree of acoustic absorption, helping to soften airborne sound through the ceiling. Each roll measures 1140mm wide by 6.00m long and covers 6.84m², and carries a Euroclass A1 non-combustible reaction-to-fire classification, the best possible rating, meaning the product does not burn.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe combi-cut format means the roll is partially perforated to give widths of 2 x 570mm or 3 x 380mm, so it can be split to sit neatly between joists at standard centres or laid uncut as a full-width cross-laid layer. This reduces cutting and offcuts on site, speeding up installation and helping maintain continuous coverage with fewer gaps.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eManufactured using ECOSE® Technology, Knauf's bio-based binder, it contains no added formaldehyde or phenol, is CFC and HCFC free, and has zero ozone depletion potential. Made with up to 80% recycled glass content, it is one of the more environmentally responsible loft insulation products available. Modern manufacturing means it is classed as low itch and more pleasant to handle, though gloves and basic protection remain sensible when working with any mineral wool. Rot proof, odourless and non-hygroscopic, it will not attract rodents or support the growth of mould, fungi or bacteria, and will last for the lifetime of the building.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eInstall in line with the Knauf Loft Roll Installation Guide and the project specification, taking care not to block eaves ventilation. A full step-by-step walkthrough is available in the [loft insulation guide](LOFT INSULATION GUIDE LINK). Suitable for both new build and renovation work, it offers a straightforward route to maximising loft thermal performance and reducing heat loss.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.044 W\/mK: reliable, effective thermal performance for loft applications\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance (R-value) of 4.50 m²K\/W for the 200mm roll\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible: the best possible reaction-to-fire classification, meaning the product does not burn\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCombi-cut format, partially perforated at 2 x 570mm and 3 x 380mm to suit standard joist centres\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e6.84m² coverage per roll\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThe thickest roll in the range, ideal for maximising loft performance and future-proofing the specification\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAlso suitable as a primary single layer between joists, or in suspended timber floors\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured with ECOSE® Technology, a bio-based binder with no added formaldehyde or phenol\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with up to 80% recycled glass content: CFC free, HCFC free, with zero ozone depletion potential\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eRot proof, odourless and non-hygroscopic: will not attract vermin or support mould or fungi\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLightweight, low-itch and easy to handle on site\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBRE Green Guide rating A+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThickness: 200mm; width: 2 x 570mm or 3 x 380mm; length: 6.00m; coverage: 6.84m² per roll\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance: 4.50 m²K\/W; vapour resistivity: 5.00 MNs\/g.m\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePacks per pallet: 24; pallet product code: 715820\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100mm base plus a 200mm cross-laid layer gives 300mm total, for a U-value of approximately 0.14 W\/m²K, beyond the 270mm Part L standard\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100mm base plus two 200mm cross-laid layers gives 500mm total, for a U-value of approximately 0.09 W\/m²K, the level typically specified in new build\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eKeep insulation clear of downlights and other heat-producing fixtures, using non-combustible covers where required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore indoors, dry and flat; protect from prolonged sunlight and moisture\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAlways refer to the Knauf Loft Roll Installation Guide before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52654390346062,"sku":"BM005979","price":32.22,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-loft-roll-44-combi-cut-200mm-bm005979-mineral-fibre-insulation-1172610116.jpg?v=1749629052"},{"product_id":"25mm-knauf-acoustic-roll-11-1m-x-1-2m-4-x-600mm-26-64m","title":"25mm Knauf Acoustic Roll  11.1m x 1.2m (4 x 600mm)  26.64m²","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"pf0\"\u003e\u003cspan class=\"cf0\"\u003eKnauf Insulation Acoustic Roll is a glass mineral wool insulation roll designed to reduce airborne sound transmission in internal walls and floors. Manufactured with a high, consistent density, it is engineered to absorb sound effectively between studs and joists, helping create quieter, more comfortable internal spaces. The roll format allows for fast installation and a close fit within standard timber or metal framing, making it suitable for both residential and commercial projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pf0\"\u003e\u003cstrong\u003e\u003cspan class=\"cf0\"\u003eBenefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"pf1\"\u003e\n\u003cspan class=\"cf0\"\u003eI\u003c\/span\u003e\u003cspan class=\"cf0\"\u003emproves sound insulation by absorbing airborne noise between rooms and floors\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eHigh-density mineral supports reliable acoustic performance in internal partitions\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\n\u003cspan class=\"cf0\"\u003eEuroclass\u003c\/span\u003e\u003cspan class=\"cf0\"\u003e A1 non-combustible\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\n\u003cspan class=\"cf0\"\u003eP\u003c\/span\u003e\u003cspan class=\"cf0\"\u003erecision-sized rolls fit neatly between studs and joists, reducing gaps\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eEasy to cut and install with standard tools\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eDurable and long-lasting\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eOdourless and moisture resistant\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"pf0\"\u003e\u003cstrong\u003e\u003cspan class=\"cf0\"\u003eGood to know\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eDesigned for internal use only\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eFinishing is required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eAcoustic performance depends on the system build-up\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eNot a load-bearing board, structural framing is required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eCompatible with standard systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eMultiple thicknesses available\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eCheck out \u003ca href=\"https:\/\/youtu.be\/7_z3SATrJek\" title=\"How to install acoustic insulation from Knauf\"\u003eKnauf's installation video\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655584280910,"sku":"BM005983","price":49.11,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-acoustic-roll-25mm-bm005983-mineral-fibre-insulation-1172607705.jpg?v=1749584656"},{"product_id":"50mm-knauf-acoustic-roll-13-5m-x-1-2m-2-x-600mm-16-20m","title":"50mm Knauf Acoustic Roll  13.5m x 1.2m (2 x 600mm)  16.20m²","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"pf0\"\u003e\u003cspan class=\"cf0\"\u003eKnauf Insulation Acoustic Roll is a glass mineral wool insulation roll designed to reduce airborne sound transmission in internal walls and floors. Manufactured with a high, consistent density, it is engineered to absorb sound effectively between studs and joists, helping create quieter, more comfortable internal spaces. The roll format allows for fast installation and a close fit within standard timber or metal framing, making it suitable for both residential and commercial projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pf0\"\u003e\u003cstrong\u003e\u003cspan class=\"cf0\"\u003eBenefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"pf1\"\u003e\n\u003cspan class=\"cf0\"\u003eI\u003c\/span\u003e\u003cspan class=\"cf0\"\u003emproves sound insulation by absorbing airborne noise between rooms and floors\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eHigh-density mineral supports reliable acoustic performance in internal partitions\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\n\u003cspan class=\"cf0\"\u003eEuroclass\u003c\/span\u003e\u003cspan class=\"cf0\"\u003e A1 non-combustible\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\n\u003cspan class=\"cf0\"\u003eP\u003c\/span\u003e\u003cspan class=\"cf0\"\u003erecision-sized rolls fit neatly between studs and joists, reducing gaps\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eEasy to cut and install with standard tools\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eDurable and long-lasting\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eOdourless and moisture resistant\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"pf0\"\u003e\u003cstrong\u003e\u003cspan class=\"cf0\"\u003eGood to know\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eDesigned for internal use only\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eFinishing is required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eAcoustic performance depends on the system build-up\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eNot a load-bearing board, structural framing is required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eCompatible with standard systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eMultiple thicknesses available\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eCheck out \u003ca href=\"https:\/\/youtu.be\/7_z3SATrJek\" title=\"How to install acoustic insulation from Knauf\"\u003eKnauf's installation video\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655586246990,"sku":"BM005982","price":46.61,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-acoustic-roll-50mm-bm005982-mineral-fibre-insulation-1172607700.jpg?v=1749584642"},{"product_id":"75mm-knauf-acoustic-roll-14-5m-x-1-2m-2-x-600mm-17-40m","title":"75mm Knauf Acoustic Roll  14.5m x 1.2m (2 x 600mm)  17.40m²","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"pf0\"\u003e\u003cspan class=\"cf0\"\u003eKnauf Insulation Acoustic Roll is a glass mineral wool insulation roll designed to reduce airborne sound transmission in internal walls and floors. Manufactured with a high, consistent density, it is engineered to absorb sound effectively between studs and joists, helping create quieter, more comfortable internal spaces. The roll format allows for fast installation and a close fit within standard timber or metal framing, making it suitable for both residential and commercial projects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pf0\"\u003e\u003cstrong\u003e\u003cspan class=\"cf0\"\u003eBenefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"pf1\"\u003e\n\u003cspan class=\"cf0\"\u003eI\u003c\/span\u003e\u003cspan class=\"cf0\"\u003emproves sound insulation by absorbing airborne noise between rooms and floors\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eHigh-density mineral supports reliable acoustic performance in internal partitions\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\n\u003cspan class=\"cf0\"\u003eEuroclass\u003c\/span\u003e\u003cspan class=\"cf0\"\u003e A1 non-combustible\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\n\u003cspan class=\"cf0\"\u003eP\u003c\/span\u003e\u003cspan class=\"cf0\"\u003erecision-sized rolls fit neatly between studs and joists, reducing gaps\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eEasy to cut and install with standard tools\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eDurable and long-lasting\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eOdourless and moisture resistant\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"pf0\"\u003e\u003cstrong\u003e\u003cspan class=\"cf0\"\u003eGood to know\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eDesigned for internal use only\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eFinishing is required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eAcoustic performance depends on the system build-up\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eNot a load-bearing board, structural framing is required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eCompatible with standard systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eMultiple thicknesses available\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eCheck out \u003ca href=\"https:\/\/youtu.be\/7_z3SATrJek\" title=\"How to install acoustic insulation from Knauf\"\u003eKnauf's installation video\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655587098958,"sku":"BM005981","price":73.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-acoustic-roll-75mm-bm005981-mineral-fibre-insulation-1172607695.jpg?v=1749584526"},{"product_id":"100mm-knauf-acoustic-roll-10-3m-x-1-2m-2-x-600mm-12-36m","title":"100mm Knauf Acoustic Roll 10.3m x 1.2m - 12.36m² per pack","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003e100mm Knauf Acoustic Roll\u003c\/strong\u003e is a glass mineral wool insulation roll designed to reduce airborne sound transmission in internal wall and floor applications. Manufactured at Knauf Insulation's UK plants in St. Helens and Cwmbran, it uses ECOSE® Technology — a plant-based binder containing no added formaldehyde or phenol — and carries the best possible Euroclass A1 non-combustible reaction to fire classification.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eEach roll measures 10.3m x 1.2m and is pre-cut into two 600mm-wide strips, giving 12.36m² of coverage per pack. The 600mm width is engineered to friction-fit between timber or metal studs and joists at standard 600mm centres, eliminating the need for cutting and reducing gaps that compromise acoustic performance.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eWith a declared thermal conductivity of 0.035 W\/mK (per DoP G4209LSCPR) and a thermal resistance (R-value) of 2.85 m²K\/W at 100mm thickness, this roll provides meaningful thermal improvement alongside its primary acoustic function. The manufactured density exceeds 10 kg\/m³, meeting the requirements for an absorption layer specified in Approved Document E of the Building Regulations.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eKnauf Acoustic Roll is tested to meet the sound performance standards for type B internal timber or metal stud partitions under Approved Document E, and is suitable for use with a range of Robust Details registered constructions for separating walls and floors, reducing the need for onsite acoustic testing.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe product is odourless, rot-proof, non-hygroscopic, does not sustain vermin, and will not encourage the growth of fungi, mould or bacteria. It has a service life equal to the structure in which it is installed — at least 50 years according to the EPD.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eKnauf's glass mineral wool contains up to 80% recycled content from post-consumer sources including windows, bottles and jars. The product contains no ozone-depleting substances and has a cradle-to-grave (A1–C4) global warming potential of 1.15 kgCO₂e\/m² at 100mm thickness. It holds the Eurofins Gold Certificate for Indoor Air Comfort and the DECLARE Red List Free label, confirming no harmful chemicals from the Red List are present.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eKey Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible — the highest fire safety classification\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePre-cut 2 x 600mm widths for friction fitting to standard stud centres — no cutting required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured density exceeding 10 kg\/m³ meets Approved Document E absorption layer requirements\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eTested for type B internal partitions to Approved Document E\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCompatible with Robust Details registered separating wall and floor constructions\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eECOSE® Technology binder — no added formaldehyde or phenol\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eUp to 80% recycled glass content\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLightweight, flexible and easy to handle\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e50+ year service life matching the building structure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eInternal partition walls (timber and metal stud)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSeparating walls between dwellings\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eInternal floors between joists\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSeparating floors (timber construction)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIntermediate floors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eGood to Know:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDesigned for internal applications only — not suitable for external or cavity wall use\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAcoustic performance depends on the complete system build-up (plasterboard type, number of layers, stud specification, and construction quality)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNot a structural or load-bearing product — requires framing\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAlso available in \u003ca href=\"https:\/\/www.insulationuk.co.uk\/products\/25mm-knauf-acoustic-roll-11-1m-x-1-2m-4-x-600mm-26-64m\" title=\"25mm Knauf Acoustic Roll\" rel=\"noopener\" target=\"_blank\"\u003e25mm\u003c\/a\u003e, \u003ca rel=\"noopener\" title=\"50mm knauf acoustic roll\" href=\"https:\/\/www.insulationuk.co.uk\/products\/50mm-knauf-acoustic-roll-13-5m-x-1-2m-2-x-600mm-16-20m\" target=\"_blank\"\u003e50mm\u003c\/a\u003e and \u003ca href=\"https:\/\/www.insulationuk.co.uk\/products\/75mm-knauf-acoustic-roll-14-5m-x-1-2m-2-x-600mm-17-40m\" target=\"_blank\" title=\"75mm knauf acoustic roll\" rel=\"noopener\"\u003e75mm\u003c\/a\u003e thicknesses\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFor installation guidance, see \u003ca href=\"https:\/\/youtu.be\/7_z3SATrJek\" class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\"\u003eKnauf's installation video\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655588114766,"sku":"BM005980","price":56.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-acoustic-roll-100mm-bm005980-mineral-fibre-insulation-1172607690.jpg?v=1749584413"},{"product_id":"75mm-knauf-insulation-dritherm®-cavity-slab-32-1-2m-x-455mm-6-per-pack","title":"75mm Knauf Insulation DriTherm® Cavity Slab 32  1.2m x 455mm (6 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cdiv class=\"_chunkWrapper_yu34g_39\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eWhere the cavity is fixed at 75mm and the U-value target is not, 75mm Knauf Insulation DriTherm® Cavity Slab 32 is the slab that gets the most out of the space available. At a thermal conductivity of 0.032 W\/mK it returns a thermal resistance of 2.30 m²K\/W from a 75mm full fill, more than a 75mm slab in either of the other DriTherm® grades manages.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eEach slab measures 1200mm x 455mm and is supplied 6 per pack, covering 3.276m². The 455mm width is set to suit standard vertical wall tie spacings, so slabs sit between ties with a closed joint against the slab beside them rather than needing trimming down every course.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eManufactured from water-repellent glass mineral wool with ECOSE® Technology, the slab is installed as the wall is built, friction fitted between the inner and outer leaves.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHighest thermal resistance available from a 75mm full-fill DriTherm® slab at 2.30 m²K\/W\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.032 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 6 per pack covering 3.276m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e455mm width matched to standard vertical wall tie spacings\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent additive resists moisture ingress\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFull fill removes the need for a residual cavity or retaining clips\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured with ECOSE® Technology bio-based binder\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCovered by BBA Agrément Certificate 95\/3212\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlab thickness must match the cavity width for a full fill to work as intended\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs are friction fitted between wall ties as the wall is built, not retro-fixed\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eButt slabs tightly to adjacent slabs to keep the insulation layer continuous\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCuts cleanly with an insulation saw or serrated knife\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAvoid crushing slab edges and corners in handling; damaged slabs should be discarded\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePackaging gives short-term protection only, so store indoors or under cover and off the ground\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655591129422,"sku":"BM005129","price":31.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-32-1200mm-x-455mm-x-75mm-bm005129-mineral-fibre-insulation-1172607685.jpg?v=1749561246"},{"product_id":"100mm-knauf-insulation-dritherm®-cavity-slab-32-1-2m-x-455mm-6-per-pack","title":"100mm Knauf Insulation DriTherm® Cavity Slab 32  1.2m x 455mm (6 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cdiv class=\"_chunkWrapper_yu34g_39\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe 100mm cavity is the industry default, which makes the choice of slab within it the only real variable. 100mm Knauf Insulation DriTherm® Cavity Slab 32 is the highest performing option for that cavity across the DriTherm® range, returning a thermal resistance of 3.10 m²K\/W from a thermal conductivity of 0.032 W\/mK.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs measure 1200mm x 455mm and are supplied 6 per pack, covering 3.276m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eMineral wool earns that number in the wall as well as on paper. The slab adapts to slight imperfections in the substrate and knits together with the slabs around it, closing the air gaps that undermine as-built performance in a full-fill cavity. Rigid alternatives depend on a flat, true masonry face to achieve the same continuity, which construction rarely provides.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHighest thermal resistance available in a 100mm DriTherm® slab at 3.10 m²K\/W\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.032 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAdapts to substrate imperfections and knits together to close air gaps\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMaintains contact through settlement and movement over the life of the wall\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 6 per pack covering 3.276m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent glass mineral wool\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFull-fill solution that does not require cavity barriers to meet Approved Document B requirements\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCarries the CCPI mark for product information\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAs-built performance depends on continuity, so tight butting between slabs matters as much as the declared figure\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSuits a nominal 100mm cavity; confirm the cavity width on the drawings before ordering\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eInstalled between wall ties as the wall is built\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs should be stored dry and flat, and protected from prolonged sunlight\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNo retaining discs or jointing tape are required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade using ECOSE® Technology, so slabs are soft to touch and low in dust\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655592309070,"sku":"BM004665","price":40.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-32-1200mm-x-455mm-x-100mm-bm004665-mineral-fibre-insulation-1172607682.jpg?v=1749561236"},{"product_id":"125mm-knauf-insulation-dritherm®-cavity-slab-32-1-2m-x-455mm-4-per-pack","title":"125mm Knauf Insulation DriTherm® Cavity Slab 32  1.2m x 455mm (4 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cdiv class=\"_chunkWrapper_yu34g_39\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e125mm Knauf Insulation DriTherm® Cavity Slab 32 is specified where the wall has to carry the performance rather than share it with services or renewables. The slab gives a thermal resistance of 3.90 m²K\/W at a thermal conductivity of 0.032 W\/mK, sitting just short of 4.0 m²K\/W in a single full-fill layer.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs are 1200mm x 455mm, supplied 4 per pack and covering 2.184m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eFire performance is not a trade-off at this thickness. DriTherm® Cavity Slabs are non-combustible with a Euroclass A1 reaction to fire classification, the highest available, which is why a full-fill mineral wool cavity does not require cavity barriers to meet Approved Document B requirements. On a wide cavity carrying a lot of insulation, that removes a detail rather than adding one.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 3.90 m²K\/W in a single full-fill layer\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.032 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible, the highest reaction to fire classification available\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDoes not require cavity barriers to meet Approved Document B requirements\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 4 per pack covering 2.184m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent additive resists moisture ingress\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFriction fitted between wall ties without ancillary fixings\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured to BS EN 13162\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLife equivalent to that of the wall structure it sits in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eA 125mm full fill needs wall ties specified to suit the cavity width, so check tie length at design stage\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlab thickness and cavity width must match for a genuine full fill\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeep cavities carry more insulation per metre run, so plan deliveries against pack coverage\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs are odourless and generate low levels of dust and VOCs\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAwarded the Eurofins Gold Certificate for Indoor Air Comfort\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eProtect from the weather on site; polyethylene packaging is short-term protection only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655592571214,"sku":"BM009000","price":34.37,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-32-1200mm-x-455mm-x-125mm-bm009000-mineral-fibre-insulation-1172607679.jpg?v=1749584400"},{"product_id":"150mm-knauf-insulation-dritherm®-cavity-slab-32-1-2m-x-455mm-4-per-pack","title":"150mm Knauf Insulation DriTherm® Cavity Slab 32  1.2m x 455mm (4 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eNothing in the DriTherm® range performs better than this. 150mm Knauf Insulation DriTherm® Cavity Slab 32 combines the deepest slab with the lowest thermal conductivity in the range, giving a thermal resistance of 4.65 m²K\/W from a single full-fill layer at 0.032 W\/mK.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs measure 1200mm x 455mm and are supplied 4 per pack, covering 2.184m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSpecifications reaching this level tend to be scrutinised on more than thermal figures. DriTherm® Cavity Slabs are made with up to 80% recycled content, including glass recovered from windows, bottles and jars, contain no ozone-depleting substances or greenhouse gases, and carry the DECLARE 'Red List Free' label. Environmental Product Declarations are published in accordance with ISO 14025, ISO 21930 and EN 15804+A2.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHighest thermal resistance in the DriTherm® range at 4.65 m²K\/W\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.032 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with up to 80% recycled glass content\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eContains no ozone-depleting substances or greenhouse gases\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDECLARE 'Red List Free' label across the glass mineral wool range\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEPDs published to ISO 14025, ISO 21930 and EN 15804+A2\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 4 per pack covering 2.184m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBES 6001 'Very Good' responsible sourcing rating across all three UK plants\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eA 150mm cavity requires wall ties, lintels and cavity trays specified for that width\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFull-fill construction is covered by BBA 95\/3212 to 25m in multi-storey applications\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eConfirm the constructed cavity width matches the slab before ordering\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs knit together to eliminate air gaps, so butt them closely at every joint\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCompression packaging means more product per pack and fewer deliveries per m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore indoors or under cover, off the ground and out of prolonged sunlight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655592931662,"sku":"BM007043","price":41.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-32-1200mm-x-455mm-x-150mm-bm007043-mineral-fibre-insulation-1172607676.jpg?v=1749584293"},{"product_id":"50mm-knauf-insulation-dritherm®-cavity-slab-37-1-2m-x-455mm-12-per-pack","title":"50mm Knauf Insulation DriTherm® Cavity Slab 37  1.2m x 455mm (12 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e50mm Knauf Insulation DriTherm® Cavity Slab 37 is the slimmest slab Knauf produces in the DriTherm® range, made for narrow cavities where a thicker full fill is not an option. Thermal resistance is 1.35 m²K\/W at a thermal conductivity of 0.037 W\/mK.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs are 1200mm x 455mm and supplied 12 per pack, covering 6.552m², which is the joint largest pack coverage across the whole DriTherm® range.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eNarrow cavities are common in garages, outbuildings, boundary walls and older cavity constructions being extended or made good. The slab is friction fitted between wall ties as the masonry goes up, exactly as the deeper slabs are, so the method does not change with the thickness.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlimmest slab in the DriTherm® range at 50mm\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 1.35 m²K\/W\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.037 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e12 slabs per pack covering 6.552m², the joint largest pack coverage in the range\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs to suit standard vertical wall tie spacings\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent glass mineral wool\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFriction fitted between wall ties without ancillary products\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCovered by BBA Agrément Certificate 95\/3212\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDesigned for a 50mm cavity; a thicker cavity needs a thicker slab, not two thin layers\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNarrow cavities leave less tolerance for mortar snots and debris, so keep the cavity clean\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCuts cleanly with an insulation saw or serrated knife\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs are light and comfortable to handle\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with ECOSE® Technology, generating low levels of dust and VOCs\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore under cover, off the ground and out of prolonged sunlight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655593161038,"sku":"BM004684","price":23.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-37-1200mm-x-455mm-x-50mm-bm004684-mineral-fibre-insulation-1172607673.jpg?v=1749584284"},{"product_id":"75mm-knauf-insulation-dritherm®-cavity-slab-37-1-2m-x-455mm-8-per-pack","title":"75mm Knauf Insulation DriTherm® Cavity Slab 37  1.2m x 455mm (8 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e75mm Knauf Insulation DriTherm® Cavity Slab 37 is a water-repellent glass mineral wool slab for external full-fill masonry cavity walls, giving a thermal resistance of exactly 2.00 m²K\/W at a thermal conductivity of 0.037 W\/mK. Slabs are 1200mm x 455mm, supplied 8 per pack and covering 4.368m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eHandling is a real consideration on a job with a lot of cavity to fill. Slabs made with ECOSE® Technology use a bio-based binder containing no added formaldehyde or phenol, made from rapidly renewable raw materials and 70% less energy-intensive to manufacture than traditional binders. The practical result on site is a slab that is soft to touch, comfortable to handle and low in dust.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThat matters most on the days when someone is cutting and fitting slabs from first lift to last.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 2.00 m²K\/W\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.037 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eECOSE® Technology bio-based binder with no added formaldehyde or phenol\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSoft to touch, comfortable to handle and low in dust\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e70% less energy-intensive to manufacture than traditional binders\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 8 per pack covering 4.368m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent glass mineral wool\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCovered by BBA Agrément Certificate 95\/3212\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSuits a 75mm cavity; slab thickness should match cavity width\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eInstalled as the wall is built, friction fitted between wall ties\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eKeep slabs tightly butted so there is no gap between adjacent slabs\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCuts cleanly with standard insulation tools\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCertified by EUCEB as made from non-classified fibres\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePackaging offers short-term protection only; store under cover for anything longer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655594635598,"sku":"BM004674","price":18.46,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-37-1200mm-x-455mm-x-75mm-bm004674-mineral-fibre-insulation-1172607667.jpg?v=1749584165"},{"product_id":"100mm-knauf-insulation-dritherm®-cavity-slab-37-1-2m-x-455mm-12-per-pack","title":"100mm Knauf Insulation DriTherm® Cavity Slab 37  1.2m x 455mm (12 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003ePack coverage is where 100mm Knauf Insulation DriTherm® Cavity Slab 37 stands apart. At 12 slabs per pack covering 6.552m², it carries more wall area per pack than any other 100mm slab in the DriTherm® range, which shows up in cost per square metre and in how many packs need moving around a busy plot.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThermal resistance is 2.70 m²K\/W at a thermal conductivity of 0.037 W\/mK, from 1200mm x 455mm slabs.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eFor volume housebuilding on a standard 100mm cavity where the target U-value is achievable at this grade, that combination is difficult to argue with: the same certification, the same installation method and the same Euroclass A1 fire performance as the higher grades, delivered across more square metres per pack.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLargest pack coverage of any 100mm DriTherm® slab at 6.552m², 12 slabs per pack\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 2.70 m²K\/W\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.037 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs to suit standard vertical wall tie spacings\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFewer packs to handle and store per square metre of wall\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent glass mineral wool\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFriction fit between wall ties with no ancillary products\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCovered by BBA Agrément Certificate 95\/3212\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCheck the target U-value first; if 37 grade does not reach it, the 34 or 32 slab in the same thickness will\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSuits a nominal 100mm cavity\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLarger packs are heavier, so plan offloading and site storage\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs must be tightly butted to maintain continuous coverage\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCompression packaging means less packaging waste per square metre\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore indoors or under cover, off the ground and protected from the elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655596470606,"sku":"BM003406","price":35.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-37-1200mm-x-455mm-x-100mm-bm003406-mineral-fibre-insulation-1172607661.jpg?v=1749584050"},{"product_id":"125mm-knauf-insulation-dritherm®-cavity-slab-37-1-2m-x-455mm-6-per-pack","title":"125mm Knauf Insulation DriTherm® Cavity Slab 37  1.2m x 455mm (6 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e125mm Knauf Insulation DriTherm® Cavity Slab 37 is a water-repellent glass mineral wool slab for external full-fill masonry cavity walls, giving a thermal resistance of 3.35 m²K\/W at a thermal conductivity of 0.037 W\/mK. Slabs are 1200mm x 455mm and supplied 6 per pack, covering 3.276m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eWidening the cavity is the alternative to upgrading the grade, and it is frequently the cheaper of the two. A 125mm slab at 37 grade delivers more thermal resistance than a 100mm slab at 32 grade, which is worth checking against the wall build-up before defaulting to the higher specification product.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe construction cost of the wider cavity has to be weighed against the saving on the slab, but on schemes where the cavity width is not yet fixed, it is a calculation worth doing.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 3.35 m²K\/W\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.037 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOutperforms a 100mm slab in the highest DriTherm® grade\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 6 per pack covering 3.276m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent additive resists moisture ingress\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFull fill without cavity barriers under Approved Document B\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCarries the CCPI mark for clear and accurate product information\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBES 6001 'Very Good' responsible sourcing rating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWidening a cavity affects wall ties, lintels, trays and reveals, so cost the whole build-up\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlab thickness must match cavity width for a full fill\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eU-value calculations should follow BS EN ISO 6946 or BS EN ISO 10211 with BR443 guidance\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eButt slabs tightly at every joint\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs are light and comfortable to handle\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore dry and flat, protected from prolonged sunlight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655602925902,"sku":"BM007508","price":22.82,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-37-1200mm-x-455mm-x-125mm-bm007508-mineral-fibre-insulation-1172607655.jpg?v=1749583932"},{"product_id":"150mm-knauf-insulation-dritherm®-cavity-slab-37-1-2m-x-455mm-8-per-pack","title":"150mm Knauf Insulation DriTherm® Cavity Slab 37  1.2m x 455mm (8 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e150mm Knauf Insulation DriTherm® Cavity Slab 37 is the deepest slab in the 37 range, giving a thermal resistance of 4.05 m²K\/W at a thermal conductivity of 0.037 W\/mK. Slabs measure 1200mm x 455mm and are supplied 8 per pack, covering 4.368m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eHeight limits are worth checking whenever a full-fill cavity gets this deep, because they govern the construction rather than the slab. DriTherm® Cavity Slabs are approved for use in buildings up to 12m high in any exposure zone, subject to the requirements of the BBA certification being met, and for multi-storey applications up to 25m in height.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eBeyond a thermal figure, that certificated scope is what allows the same product to run from a two-storey house to a mid-rise block.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 4.05 m²K\/W, the highest available in DriTherm® 37\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.037 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eApproved for buildings up to 12m in any exposure zone\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eApproved for multi-storey applications up to 25m in height\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 8 per pack covering 4.368m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent glass mineral wool\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured to BS EN 13162 under ISO 9001, 14001, 45001 and 50001 certified systems\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLife equivalent to that of the wall structure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHeight and exposure zone both govern the approved scope, so establish them at design stage\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eA 150mm cavity needs ties, lintels and cavity trays specified for the width\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlab thickness must match cavity width for a genuine full fill\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eKeep slabs tightly butted so no gaps form in the insulation layer\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCover exposed work at the end of each day and in heavy rain\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs are rot proof, non-hygroscopic and will not sustain vermin\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655603384654,"sku":"BM005984","price":36.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-37-1200mm-x-455mm-x-150mm-bm005984-mineral-fibre-insulation-1172607649.jpg?v=1749583815"},{"product_id":"25mm-knauf-rocksilk-rs45-building-slab-1-2m-x-600mm","title":"25mm Knauf Rocksilk RS45 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eRS45 is the standard-density member of the Rocksilk® family, and that is a recommendation rather than a caveat. Plenty of constructions need rock mineral wool for its fire and acoustic behaviour without needing the mass that the heavier slabs carry, and specifying up the density ladder when the job does not call for it simply costs more.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e25mm Knauf Rocksilk® RS45 has a thermal conductivity of 0.035 W\/mK, giving a thermal resistance of 0.70 m²K\/W*. Slabs measure 1200mm x 600mm and are supplied 20 per pack, covering 14.40m², the widest pack coverage anywhere in the Rocksilk® range.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eWorth knowing when comparing: RS45 sits at 0.035 W\/mK while the denser Rocksilk® slabs run at 0.034 W\/mK, so the heavier products do carry a marginal thermal edge. It is small, and it is not usually the reason anyone chooses between them.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStandard-density rock mineral wool slab at 45 kg\/m³\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.035 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 0.70 m²K\/W*\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 600mm slabs, 20 per pack covering 14.40m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWidest pack coverage in the Rocksilk® range\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 to BS EN 13501-1\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured with ECOSE® Technology bio-based binder\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMulti-application across thermal, fire protection and acoustic use\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e12 packs per pallet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWhere a specification names a density, check it: RS45 is 45 kg\/m³, and the denser Rocksilk® slabs are not interchangeable with it\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAt 25mm the slab is usually a supplementary layer rather than the main insulation\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs should be closely butted so the layer stays continuous\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCuts easily to size with a large-bladed knife or saw\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSupplied in recyclable 4-LDPE polythene packs\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore indoors or under cover and off the ground; never leave permanently exposed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e*Thermal resistance calculated from the declared thermal conductivity using Knauf's stated method: thickness in metres divided by lambda, rounded down to the nearest 0.05 m²K\/W. Knauf does not publish a declared R-value table for Rocksilk® Building Slabs.\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655604531534,"sku":"BM002988","price":39.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs45-building-slab-1200mm-x-600mm-600-x-1200-x-25mm-bm002988-mineral-fibre-insulation-1172607643.jpg?v=1749583798"},{"product_id":"30mm-knauf-rocksilk-rs45-building-slab-1-2m-x-600mm","title":"30mm Knauf Rocksilk RS45 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eBuilt-up metal roofs and walls are one of the applications Knauf lists for Rocksilk® Building Slabs, and 30mm is a common liner depth within them. It is a construction where non-combustibility is not a nice-to-have: metal-clad industrial and commercial envelopes come under scrutiny for fire performance, and rock mineral wool answers that at material level.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e30mm Knauf Rocksilk® RS45 is classified Euroclass A1 to BS EN 13501-1, the highest reaction to fire classification available. Slabs are 1200mm x 600mm and supplied 16 per pack, covering 11.52m². Thermal conductivity is 0.035 W\/mK, giving a thermal resistance of 0.85 m²K\/W*.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe same slab is listed for pitched roofs between rafters, intermediate and separating floors, internal stud partitions and light steel frame infill, so a single product covers several elements of a building rather than one.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eListed by Knauf for built-up metal roofs and walls\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 to BS EN 13501-1\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.035 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 0.85 m²K\/W*\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 600mm slabs, 16 per pack covering 11.52m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDensity of 45 kg\/m³\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOne slab specification across roofs, floors, partitions and frame infill\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured to BS EN 13162\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eContains no ozone-depleting substances or greenhouse gases\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eReaction to fire describes the material; any fire resistance period belongs to the tested system\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eConfirm the build-up against the system specification before substituting\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eKeep slabs tightly butted with no gaps at joints or perimeters\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eRock mineral wool has a melting temperature above 1000°C\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNot a decorative surface\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCover slabs and keep them off the ground while stored on site\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e*Thermal resistance calculated from the declared thermal conductivity using Knauf's stated method: thickness in metres divided by lambda, rounded down to the nearest 0.05 m²K\/W.\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655605219662,"sku":"BM002992","price":40.26,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs45-building-slab-1200mm-x-600mm-600-x-1200-x-30mm-bm002992-mineral-fibre-insulation-1172607640.jpg?v=1749583689"},{"product_id":"40mm-knauf-rocksilk-rs45-building-slab-1-2m-x-600mm","title":"40mm Knauf Rocksilk RS45 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eLight steel frame infill is unforgiving of insulation that will not conform. Steel sections are dimensionally precise but the assembled frame rarely is, and rigid boards leave a gap wherever the two disagree. Rock mineral wool takes a different approach: it adapts to slight imperfections in the substrate and knits together with the slab beside it, closing the air gaps that undermine performance in practice.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e40mm Knauf Rocksilk® RS45 is a rock mineral wool slab at 45 kg\/m³, sized 1200mm x 600mm and supplied 12 per pack covering 8.64m². Thermal conductivity is 0.035 W\/mK, giving a thermal resistance of 1.10 m²K\/W*.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eKnauf makes the point directly in its own literature: the absence of air gaps is what determines whether insulation delivers in the building rather than only in the calculation.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAdapts to slight imperfections in the substrate and knits together, eliminating air gaps\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eListed by Knauf for light steel frame infill\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.035 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 1.10 m²K\/W*\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 600mm slabs, 12 per pack covering 8.64m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDensity of 45 kg\/m³\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEasier to install correctly than rigid board alternatives\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e12 packs per pallet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMeasure the actual bay width before cutting, as assembled frames vary from the drawing\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCut slightly generous rather than tight so the slab knits against the framing\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFill fully around noggins, services and penetrations rather than working around them\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOdourless, rot proof and non-hygroscopic\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with ECOSE® Technology, containing no added formaldehyde or phenol\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePacks give short-term protection only; store under cover for anything longer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e*Thermal resistance calculated from the declared thermal conductivity using Knauf's stated method: thickness in metres divided by lambda, rounded down to the nearest 0.05 m²K\/W.\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655605449038,"sku":"BM004209","price":37.85,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs45-building-slab-1200mm-x-600mm-600-x-1200-x-40mm-bm004209-mineral-fibre-insulation-1172607637.jpg?v=1749583682"},{"product_id":"50mm-knauf-rocksilk-rs45-building-slab-1-2m-x-600mm","title":"50mm Knauf Rocksilk RS45 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eMost internal stud partitions get insulated for two reasons at once: to hold heat where it is wanted and to stop conversations travelling between rooms. 50mm Knauf Rocksilk® RS45 does both jobs from one slab, which is why it is the depth that moves in the greatest volume across the range.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs measure 1200mm x 600mm and are supplied 10 per pack, covering 7.20m². Thermal conductivity is 0.035 W\/mK, giving a thermal resistance of 1.40 m²K\/W*.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe acoustic side comes from the material rather than the thickness. Knauf states that mineral wool provides the best levels of sound absorption and reduction compared with other mainstream insulants, and a partition filled edge to edge with it behaves very differently from one filled with a rigid board or left empty.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal and acoustic performance from a single slab\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMineral wool offers the best levels of sound absorption and reduction among mainstream insulants\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eListed by Knauf for internal stud partitions\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.035 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 1.40 m²K\/W*\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 600mm slabs, 10 per pack covering 7.20m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDensity of 45 kg\/m³\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAwarded the Eurofins Gold Certificate for Indoor Air Comfort\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eInsulation reduces sound transmission as part of a partition; it does not soundproof a room on its own\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSound reduction figures belong to the tested partition, so work to the system specification\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eGaps at the head, base and around sockets undo acoustic performance quickly\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlab depth should match the stud depth being filled\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eGenerates low levels of dust and VOCs\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore under cover, off the ground and out of the weather\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e*Thermal resistance calculated from the declared thermal conductivity using Knauf's stated method: thickness in metres divided by lambda, rounded down to the nearest 0.05 m²K\/W.\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655605711182,"sku":"BM004208","price":38.68,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs45-building-slab-1200mm-x-600mm-600-x-1200-x-50mm-bm004208-mineral-fibre-insulation-1172607634.jpg?v=1749583572"},{"product_id":"60mm-knauf-rocksilk-rs45-building-slab-1-2m-x-600mm","title":"60mm Knauf Rocksilk RS45 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003ePitched roof constructions between rafters are one of the applications Knauf lists for Rocksilk® Building Slabs, and 60mm is a depth that suits shallower rafter sections without needing a second layer to make up the difference.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e60mm Knauf Rocksilk® RS45 measures 1200mm x 600mm and is supplied 8 per pack, covering 5.76m². Thermal conductivity is 0.035 W\/mK, giving a thermal resistance of 1.70 m²K\/W*.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eRafter spacings are among the least consistent dimensions on any older roof, which is where the practical advantage sits. The slab is lightweight and cuts easily to size, so working along a run of irregular bays is a matter of measuring and trimming rather than fighting a board into a space it was never sized for.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eListed by Knauf for pitched roof constructions between rafters\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.035 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 1.70 m²K\/W*\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 600mm slabs, 8 per pack covering 5.76m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLightweight and easily cut to size for irregular bays\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDensity of 45 kg\/m³\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 to BS EN 13501-1\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater vapour resistivity of 5.00 MNs\/g.m\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured under ISO 9001, ISO 14001 and ISO 50001 systems certified by TÜV Nord\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMeasure each bay individually on an older roof rather than assuming a consistent spacing\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eVentilation and condensation control in a pitched roof are design matters; check the specification\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs should sit snugly against the rafters with no gaps at the edges\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDo not compress the slab into a shallower space\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWill not sustain vermin or encourage the growth of fungi, mould or bacteria\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNever leave slabs permanently exposed to the elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e*Thermal resistance calculated from the declared thermal conductivity using Knauf's stated method: thickness in metres divided by lambda, rounded down to the nearest 0.05 m²K\/W.\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655606956366,"sku":"BM005820","price":36.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs45-building-slab-1200mm-x-600mm-600-x-1200-x-60mm-bm005820-mineral-fibre-insulation-1172607631.jpg?v=1749583563"},{"product_id":"75mm-knauf-rocksilk-rs45-building-slab-1-2m-x-600mm","title":"75mm Knauf Rocksilk RS45 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eIntermediate floors are where a house or an office building gets noisy, and 75mm Knauf Rocksilk® RS45 is specified into the joist void to deal with it. Knauf lists intermediate floors and separating floors among the applications for Rocksilk® Building Slabs, alongside partitions, rafter-level roof work and frame infill.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs are 1200mm x 600mm and supplied 6 per pack, covering 4.32m². Thermal conductivity is 0.035 W\/mK, giving a thermal resistance of 2.10 m²K\/W*.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eA floor void is not somewhere anyone wants to revisit. Knauf states that the product will have a life equivalent to that of the wall structure in which it is incorporated, so once the deck goes down the insulation is settled: no slumping into the bottom of the void, no degradation, no voids opening up over the joist runs years later.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eListed by Knauf for intermediate and separating floors\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLife equivalent to that of the structure it is incorporated into\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.035 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 2.10 m²K\/W*\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 600mm slabs, 6 per pack covering 4.32m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDensity of 45 kg\/m³\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEnvironmental Product Declaration S-P-02700 published for the product\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e12 packs per pallet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlab depth should suit the joist depth; a 75mm slab is not a full fill of a deeper void\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eTake care to fill right up to the joists so no gaps run the length of the floor\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eImpact and airborne sound are separate problems and are addressed differently in a floor build-up\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHandle slabs without crushing edges and corners\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eRot proof and non-hygroscopic\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore indoors or under cover and off the ground\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e*Thermal resistance calculated from the declared thermal conductivity using Knauf's stated method: thickness in metres divided by lambda, rounded down to the nearest 0.05 m²K\/W.\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655607382350,"sku":"BM003227","price":33.76,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs45-building-slab-1200mm-x-600mm-600-x-1200-x-75mm-bm003227-mineral-fibre-insulation-1172607628.jpg?v=1749583455"},{"product_id":"100mm-knauf-rocksilk-rs45-building-slab-1-2m-x-600mm","title":"100mm Knauf Rocksilk RS45 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e100mm is the deepest Rocksilk® RS45 slab in this range and the one specified into separating floors, deeper joist voids and full-depth frame infill. Slabs measure 1200mm x 600mm and are supplied 5 per pack, covering 3.60m², with 12 packs to a pallet. Thermal conductivity is 0.035 W\/mK, giving a thermal resistance of 2.85 m²K\/W*.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eAt this depth the slab is often working in a floor or a roof void where moisture and long-term stability are as relevant as the thermal figure. Rocksilk® Building Slabs are non-hygroscopic and rot proof, with a water vapour resistivity of 5.00 MNs\/g.m, and they will not sustain vermin or encourage the growth of fungi, mould or bacteria.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eKnauf also confirms the slabs contain no ozone-depleting substances or greenhouse gases, with environmental performance reported under EPD S-P-02700.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeepest Rocksilk® RS45 slab in this range at 100mm\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.035 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 2.85 m²K\/W*\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 600mm slabs, 5 per pack covering 3.60m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e12 packs per pallet\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNon-hygroscopic, rot proof and will not sustain vermin\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater vapour resistivity of 5.00 MNs\/g.m\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 to BS EN 13501-1\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eContains no ozone-depleting substances or greenhouse gases\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlab thickness should match the depth of the void or framing it fills\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCompressing the slab into a shallower space means it will not perform as calculated\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eContinuity matters as much as depth: butt slabs closely and fill right to the framing\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eRocksilk® RS45 is also produced at 150mm if a deeper section is required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNot a decorative surface\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCover slabs, keep them off the ground and protect from the weather on site\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e*Thermal resistance calculated from the declared thermal conductivity using Knauf's stated method: thickness in metres divided by lambda, rounded down to the nearest 0.05 m²K\/W.\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655607644494,"sku":"BM003428","price":36.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs45-building-slab-1200mm-x-600mm-600-x-1200-x-100mm-bm003428-mineral-fibre-insulation-1172607625.jpg?v=1749583447"},{"product_id":"25mm-knauf-rocksilk-rs60-building-slab-1-2m-x-600mm","title":"25mm Knauf Rocksilk RS60 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e25mm Knauf Rocksilk® RS60 Building Slab is a mid-density rock mineral wool slab for thin-section work, where a denser insulation is called for but the depth available is tight. Measuring 1200mm x 600mm, it is widely used in fabrication, in lining out shallow voids, and as the make-up layer that brings a build-up to its specified thickness.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe slab declares a thermal conductivity of 0.034 W\/mK and a thermal resistance of 0.70 m²K\/W at this thickness. Rock mineral wool adapts to slight imperfections in the substrate and knits together at the joints, which helps close out the air gaps that otherwise erode as-built performance.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSupplied 18 slabs to a pack covering 12.96m², 25mm RS60 carries the largest pack coverage in the range, which keeps trips to the stack down on repeat runs. It is non-combustible with a Euroclass A1 reaction to fire classification and is manufactured using ECOSE® Technology, Knauf Insulation's plant-based binder.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal resistance of 0.70 m²K\/W at 25mm\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 reaction to fire to BS EN 13501-1, the highest available classification\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e18 slabs per pack covering 12.96m², the largest pack coverage across RS60\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eRock mineral wool with a melting temperature above 1000°C\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with ECOSE® Technology, a plant-based binder containing no added formaldehyde or phenol\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAwarded the Eurofins Gold Certificate for Indoor Air Comfort, generating low levels of dust and VOCs\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCuts cleanly and friction fits into shallow voids and fabricated assemblies\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eMade-up depths.\u003c\/strong\u003e At 25mm this thickness is most often specified to bring a build-up up to a required depth, or as a component layer in fabricated thermal, acoustic and fire products.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eJoints matter more at thin sections.\u003c\/strong\u003e Butt slabs tightly and fill the void completely. A gap at a joint costs proportionally more performance at 25mm than at 100mm.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eReaction to fire is a material property.\u003c\/strong\u003e Fire resistance belongs to the tested construction, not the slab, so work from the relevant system test evidence.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eU-values are a function of the whole build-up and must be calculated to BS EN ISO 6946:2017 using BR443:2019 guidance.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eUnfaced slab. It is not a finished or decorative surface and requires lining or boarding.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore dry, flat, under cover and off the ground. Discard any slab that has been crushed, soaked or contaminated.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655609413966,"sku":"IUK00876","price":50.87,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs60-building-slab-1200mm-x-600mm-25mm-18-x-slabs-iuk00876-mineral-fibre-insulation-1172607622.jpg?v=1749583437"},{"product_id":"40mm-knauf-rocksilk-rs60-building-slab-1-2m-x-600mm","title":"40mm Knauf Rocksilk RS60 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eAt 40mm, Knauf Rocksilk® RS60 Building Slab reaches a declared thermal resistance of 1.15 m²K\/W on a conductivity of 0.034 W\/mK. It is the thickness that suits shallow frame infill: battened linings, light steel frame sections and stud zones too narrow to take 50mm without compressing the slab.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eRock mineral wool at this density holds its shape in the void and will not slump over time, so the insulation stays where it was installed for the life of the structure in which it sits. The material is odourless, rot proof and non-hygroscopic, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe 1200mm x 600mm slab is supplied 12 to a pack, covering 8.64m², with 12 packs to a pallet for volume work.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal resistance of 1.15 m²K\/W at 40mm\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNon-combustible, achieving Euroclass A1 reaction to fire to BS EN 13501-1\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMelting temperature above 1000°C\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFibres certified by EUCEB, the independent mineral wool certification body\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOdourless, rot proof and non-hygroscopic, and will not sustain vermin, fungi, mould or bacteria\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured with around 35% recycled content\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e12 slabs per pack covering 8.64m², 12 packs per pallet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eCut to a friction fit.\u003c\/strong\u003e Size the slab a few millimetres over the void width so it grips between studs or rails without needing to be forced or compressed.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eDensity earns its keep in narrow zones.\u003c\/strong\u003e Mid-density rock mineral wool resists slumping in shallow vertical voids where a lighter slab is more prone to settling.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eAcoustic behaviour is a system outcome.\u003c\/strong\u003e The slab absorbs sound within the void; the sound reduction figure belongs to the tested partition or floor as a whole.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater vapour resistivity is 5.00 MNs\/g.m, so the slab offers negligible resistance to vapour movement. Vapour control is a separate layer within the build-up.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAll dimensions quoted are nominal.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eKeep packs covered on site, off the ground and out of prolonged sunlight.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655609741646,"sku":"IUK00877","price":55.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs60-building-slab-1200mm-x-600mm-40mm-12-x-slabs-iuk00877-mineral-fibre-insulation-1172607619.jpg?v=1749583330"},{"product_id":"50mm-knauf-rocksilk-rs60-building-slab-1-2m-x-600mm","title":"50mm Knauf Rocksilk RS60 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e50mm is the size most stud partitions are built around, and 50mm Knauf Rocksilk® RS60 Building Slab is dimensioned to fill that zone cleanly. The 1200mm x 600mm slab drops between studs at standard centres and sits tight against the framing, absorbing sound within the cavity while adding a declared 1.45 m²K\/W of thermal resistance.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eInternal walls, timber frame partitions and light steel frame infill are the usual destinations, along with intermediate floors where the joist depth allows. Because rock mineral wool knits at the joints rather than relying on a rigid edge profile, small variations in stud spacing are taken up by the slab instead of leaving voids behind the lining.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe product carries a declaration of performance made in conformity with BS EN 13162:2012+A1:2015, and is supplied 9 slabs to a pack covering 6.48m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal resistance of 1.45 m²K\/W at 50mm\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSized for standard 50mm stud and batten zones in partitions and frame walls\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 reaction to fire to BS EN 13501-1, non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAbsorbs sound within the void, contributing to the acoustic performance of the completed construction\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclaration of performance to BS EN 13162:2012+A1:2015\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with ECOSE® Technology, generating low dust and VOC levels in use\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWill have a service life equivalent to that of the structure it is built into\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e9 slabs per pack covering 6.48m², 12 packs per pallet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFill the full bay.\u003c\/strong\u003e Partition acoustic performance falls away quickly where slabs are short at the head, the base or around services. Cut around sockets and pipework rather than leaving the slab short.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSound reduction is a system property.\u003c\/strong\u003e The tested partition delivers the dB figure; the slab contributes absorption within the cavity. Specify from system test data.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eReaction to fire is a material property.\u003c\/strong\u003e A1 describes how the slab itself behaves in fire and is not a fire resistance period for the wall.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eUnfaced product, intended to be concealed behind plasterboard or a comparable lining.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eHandle by the face and avoid crushing edges and corners, which is where a friction fit is lost.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore indoors or under cover, dry and flat, and cover exposed slabs at the end of the working day.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655609938254,"sku":"IUK00878","price":49.27,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs60-building-slab-1200mm-x-600mm-50mm-9-x-slabs-iuk00878-mineral-fibre-insulation-1172607616.jpg?v=1749583320"},{"product_id":"60mm-knauf-rocksilk-rs60-building-slab-1-2m-x-600mm","title":"60mm Knauf Rocksilk RS60 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e60mm Knauf Rocksilk® RS60 Building Slab covers the void depths that fall between the common sizes, where 50mm leaves the bay under-filled and 75mm will not go in without compression. It declares 1.75 m²K\/W of thermal resistance on a conductivity of 0.034 W\/mK.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSizes like this are usually specification-driven rather than chosen off the shelf, most often on light steel frame infill, timber frame walls and rafter-level work where the section depth is set by the structure. Filling that depth exactly is the point: mineral wool that is compressed loses thickness and therefore resistance, while a partly filled void leaves a convection path behind the lining.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs measure 1200mm x 600mm and are supplied 7 to a pack, covering 5.04m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal resistance of 1.75 m²K\/W at 60mm\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFills 60mm structural voids without compression or packing out\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNon-combustible, Euroclass A1 to BS EN 13501-1\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eUnfaced slabs carry the DECLARE Red List Free label\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured under BES 6001 (v4.0) 'Very Good' responsible sourcing certification\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEnvironmental performance published under EPD S-P-03784\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e7 slabs per pack covering 5.04m²\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eMatch the slab to the void, not the nearest size.\u003c\/strong\u003e Compressing a thicker slab into a 60mm zone reduces its installed thickness and its declared resistance with it.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eContinuity beats thickness.\u003c\/strong\u003e An unbroken 60mm layer will usually outperform a thicker layer interrupted by gaps at junctions and service penetrations.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFire resistance is tested at system level.\u003c\/strong\u003e The A1 classification applies to the slab material; periods of fire resistance come from the tested build-up.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThe EPD declared unit for RS60 is 1m² at 100mm thickness, so figures need scaling for this thickness.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWhere the product forms part of a system whose performance depends on characteristics not declared on the DoP, refer to Knauf Insulation's technical services team.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDamaged, wet or contaminated slabs should not be installed.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655610528078,"sku":"IUK00879","price":46.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs60-building-slab-1200mm-x-600mm-60mm-7-x-slabs-iuk00879-mineral-fibre-insulation-1172607613.jpg?v=1749583212"},{"product_id":"75mm-knauf-rocksilk-rs60-building-slab-1-2m-x-600mm","title":"75mm Knauf Rocksilk RS60 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e75mm Knauf Rocksilk® RS60 Building Slab is aimed at the deeper horizontal zones: intermediate floors, separating floors between dwellings, and pitched roof constructions at rafter level. At this depth the slab declares 2.20 m²K\/W of thermal resistance while filling most standard joist and rafter bays in a single layer.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eFloor and roof zones ask more of an insulation slab than a partition does, because the material has to stay in position across a horizontal or pitched span for decades. Mid-density rock mineral wool holds itself between joists without sagging away from the deck, and being non-hygroscopic it does not draw in moisture from the surrounding structure.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe 1200mm x 600mm slab is supplied 6 to a pack covering 4.32m², and cuts to length with a serrated blade for trimming around noggins and services.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal resistance of 2.20 m²K\/W at 75mm\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFills most standard joist and rafter bays in a single layer\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 reaction to fire to BS EN 13501-1, with a melting temperature above 1000°C\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAbsorbs airborne sound within floor and ceiling voids\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNon-hygroscopic and rot proof, holding position for the life of the structure\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAround 35% recycled content, mostly from steel industry by-product\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured under ISO 9001, ISO 14001, ISO 45001 and ISO 50001 management systems\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e6 slabs per pack covering 4.32m²\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSeparating floors are tested assemblies.\u003c\/strong\u003e Where the floor must meet Approved Document E, install to the tested system specification rather than substituting on thickness alone.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eSupport the slab at rafter level.\u003c\/strong\u003e On pitched roofs the slab needs to be retained between rafters so it stays in contact with the framing over time.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eReaction to fire and fire resistance are different things.\u003c\/strong\u003e A1 is the material classification; a floor's fire resistance period comes from the complete tested construction.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eTrim slabs a little oversize so they friction fit between joists rather than relying on fixings alone.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eU-values for the floor or roof build-up require calculation to BS EN ISO 6946:2017.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCover exposed slabs at the end of the day and during heavy rain, and store packs dry and flat.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655611904334,"sku":"IUK00880","price":47.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs60-building-slab-1200mm-x-600mm-75mm-6-x-slabs-iuk00880-mineral-fibre-insulation-1172607610.jpg?v=1749583204"},{"product_id":"100mm-knauf-rocksilk-rs60-building-slab-1-2m-x-600mm","title":"100mm Knauf Rocksilk RS60 Building Slab  1.2m x 600mm","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e100mm Knauf Rocksilk® RS60 Building Slab delivers the highest declared thermal resistance in the RS60 range at 2.90 m²K\/W, on a conductivity of 0.034 W\/mK. Where thermal performance is the governing requirement rather than a secondary benefit, this is the thickness to specify.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eIt is used at rafter level in pitched roofs, in suspended and internal ground floors, in separating and intermediate floors, and in timber and light steel frame walls with the depth to take it. Because mineral wool adapts to imperfections in the substrate and knits together at every joint, the installed layer stays continuous, which is what closes the gap between calculated and as-built performance.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs measure 1200mm x 600mm and are supplied 4 to a pack covering 2.88m², with 12 packs to a pallet.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal resistance of 2.90 m²K\/W, the highest in the RS60 range\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNon-combustible, achieving Euroclass A1 reaction to fire to BS EN 13501-1\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSuited to rafter level, ground floors, separating floors and frame walls\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFibres independently certified by EUCEB against Note Q exoneration criteria\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with ECOSE® Technology, Knauf Insulation's plant-based binder\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCovered by Declaration of Performance R4208MPCPR\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e4 slabs per pack covering 2.88m², 12 packs per pallet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eDepth alone will not carry the U-value.\u003c\/strong\u003e Thermal bridging at joists, rafters and junctions has to be accounted for in the calculation, so model the full build-up to BS EN ISO 6946:2017 with BR443:2019 guidance.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eContinuity is the deciding factor at this thickness.\u003c\/strong\u003e A 100mm layer broken by gaps at abutments will underperform a well-fitted thinner one.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eA1 is a reaction to fire classification.\u003c\/strong\u003e It describes the material's behaviour in fire and does not on its own establish a fire resistance period for the element.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThe published EPD (S-P-03784) uses 1m² of RS60 at 100mm as its declared unit, so this thickness maps directly to the declared environmental figures.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eUnfaced product requiring a lining, deck or board finish.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore under cover, off the ground, protected from prolonged sunlight and never left permanently exposed.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655612232014,"sku":"IUK00875","price":41.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-rocksilk-rs60-building-slab-1200mm-x-600mm-100mm-4-x-slabs-iuk00875-mineral-fibre-insulation-1172607607.jpg?v=1749583097"},{"product_id":"100mm-knauf-loft-roll-44-combi-cut-12-18m-x-1-14m-2-x-570mm-3-x-380mm","title":"100mm Knauf Loft Roll 44 Combi-cut 1140mm x 12.18m - 13.89m2 per pack","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eKnauf Loft Roll 44 (100mm) is a glass mineral wool loft insulation roll for insulating cold pitched roofs at ceiling level, and it can also be used between joists in suspended timber floors. One of the most widely used loft insulation products in the UK, it is a reliable, affordable and easy-to-install choice for builders, developers and homeowners working to meet building regulation requirements. The 100mm thickness is laid as the first layer, filling fully between ceiling joists at either 400mm or 600mm centres, before cross-laid layers are added over the top to reach the total depth required. Building regulations for roofs are set as U-value targets rather than fixed depths, and around 270mm of mineral wool is the depth commonly used to meet them in England and Wales, with Scotland generally requiring more. In new build properties, total depths of 400mm to 500mm are typical.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThermal conductivity is 0.044 W\/mK and thermal resistance is 2.25 m²K\/W, giving reliable thermal performance for loft applications. As a glass mineral wool, it also offers a degree of acoustic absorption, helping to soften airborne sound through the ceiling. Each roll measures 1140mm wide by 12.18m long and covers 13.89m², and carries a Euroclass A1 non-combustible reaction-to-fire classification, the best possible rating, meaning the product does not burn.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe combi-cut format means the roll is partially perforated to give widths of 2 x 570mm or 3 x 380mm, so it can be split to sit neatly between joists at standard centres or laid uncut as a full-width cross-laid layer. This reduces cutting and offcuts on site, speeding up installation and helping maintain continuous coverage with fewer gaps.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eManufactured using ECOSE® Technology, Knauf's bio-based binder, it contains no added formaldehyde or phenol, is CFC and HCFC free, and has zero ozone depletion potential. Made with up to 80% recycled glass content, it is one of the more environmentally responsible loft insulation products available. Modern manufacturing means it is classed as low itch and more pleasant to handle, though gloves and basic protection remain sensible when working with any mineral wool. Rot proof, odourless and non-hygroscopic, it will not attract rodents or support the growth of mould, fungi or bacteria, and will last for the lifetime of the building.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eFor best results, install in line with the Knauf Loft Roll Installation Guide and the project specification, taking care not to block eaves ventilation. A full step-by-step walkthrough is available in the \u003cstrong\u003e\u003ca href=\"https:\/\/www.insulationuk.co.uk\/blogs\/news\/how-much-loft-insulation-do-i-need\"\u003eloft insulation guide\u003c\/a\u003e\u003c\/strong\u003e Suitable for both new build and renovation work, it offers a straightforward route to improving loft thermal performance and reducing heat loss.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.044 W\/mK: reliable, effective thermal performance for loft applications\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible: the best possible reaction-to-fire classification, meaning the product does not burn\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCombi-cut format, partially perforated at 2 x 570mm and 3 x 380mm to suit standard joist centres\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e13.89m² coverage per roll, helping reduce joins and speed up installation\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDesigned as the base layer between ceiling joists at 100mm depth\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured with ECOSE® Technology, a bio-based binder with no added formaldehyde or phenol\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with up to 80% recycled glass content: CFC free, HCFC free, with zero ozone depletion potential\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eRot proof, odourless and non-hygroscopic: will not attract vermin or support mould or fungi\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLightweight, low-itch and easy to handle on site\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCCPI Verification Mark (certificate number 000600173\/0627)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBRE Green Guide rating A+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThickness: 100mm; width: 2 x 570mm or 3 x 380mm; length: 12.18m; coverage: 13.89m² per roll\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance: 2.25 m²K\/W; vapour resistivity: 5.00 MNs\/g.m\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePacks per pallet: 24; pallet product code: 2404154\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100mm plus 170mm gives 270mm total, the depth commonly used to meet loft U-value targets in England and Wales\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100mm plus 2 x 200mm gives 500mm total, for a U-value of approximately 0.09 W\/m²K where maximum performance is wanted\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eKeep insulation clear of downlights and other heat-producing fixtures, using non-combustible covers where required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCompliant with BS EN 13162:2012+A1:2015; manufactured to ISO 9001, ISO 14001, ISO 45001 and ISO 50001\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore indoors, dry and flat; protect from prolonged sunlight and moisture\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAlways refer to the Knauf Loft Roll Installation Guide before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655773712718,"sku":"BM001212","price":32.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-loft-roll-44-combi-cut-100mm-bm001212-mineral-fibre-insulation-1172606921.jpg?v=1749562081"},{"product_id":"150mm-knauf-loft-roll-44-combi-cut-8-05m-x-1-14m-2-x-570mm-3-x-380mm","title":"150mm Knauf Loft Roll 44 Combi-cut 1140mm x 8.05m - 9.18m2 per pack","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eKnauf Loft Roll 44 (150mm) is a glass mineral wool loft insulation roll for insulating cold pitched roofs at ceiling level, and it can also be used between joists in suspended timber floors. It is most often used as a cross-laid overlay, laid perpendicular to a base layer between the ceiling joists to build up total depth, though it also works well as a primary single layer where a 150mm depth is suitable. Laying the overlay at right angles to the layer below helps reduce thermal bridging across the joists, improving overall thermal performance. Building regulations for roofs are set as U-value targets rather than fixed depths, and around 270mm of mineral wool is the depth commonly used to meet them in England and Wales, with Scotland generally requiring more.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThermal conductivity is 0.044 W\/mK and thermal resistance is 3.40 m²K\/W, giving reliable thermal performance across loft applications. As a glass mineral wool, it also offers a degree of acoustic absorption, helping to soften airborne sound through the ceiling. Each roll measures 1140mm wide by 8.05m long and covers 9.18m², and carries a Euroclass A1 non-combustible reaction-to-fire classification, the best possible rating, meaning the product does not burn.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe combi-cut format means the roll is partially perforated to give widths of 2 x 570mm or 3 x 380mm, so it can be split to sit neatly between joists at standard centres or laid uncut as a full-width cross-laid layer. This reduces cutting and offcuts on site, speeding up installation and helping maintain continuous coverage with fewer gaps.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eManufactured using ECOSE® Technology, Knauf's bio-based binder, it contains no added formaldehyde or phenol, is CFC and HCFC free, and has zero ozone depletion potential. Made with up to 80% recycled glass content, it is one of the more environmentally responsible loft insulation products available. Modern manufacturing means it is classed as low itch and more pleasant to handle, though gloves and basic protection remain sensible when working with any mineral wool. Rot proof, odourless and non-hygroscopic, it will not attract rodents or support the growth of mould, fungi or bacteria, and will last for the lifetime of the building.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eA 100mm base layer with a single 150mm cross-laid layer reaches 250mm total, just short of the 270mm commonly specified, while a 100mm base with two 150mm cross-laid layers reaches 400mm and comfortably exceeds typical loft targets. Install in line with the Knauf Loft Roll Installation Guide and the project specification, taking care not to block eaves ventilation. Suitable for both new build and renovation work, it offers a straightforward route to improving loft thermal performance and reducing heat loss.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.044 W\/mK: reliable, effective thermal performance for loft applications\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance (R-value) of 3.40 m²K\/W for the 150mm roll\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible: the best possible reaction-to-fire classification, meaning the product does not burn\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCombi-cut format, partially perforated at 2 x 570mm and 3 x 380mm to suit standard joist centres\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e9.18m² coverage per roll\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIdeal as a cross-laid overlay: lay perpendicular to the base layer to reduce thermal bridging\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAlso suitable as a primary single layer between joists, or in suspended timber floors\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured with ECOSE® Technology, a bio-based binder with no added formaldehyde or phenol\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with up to 80% recycled glass content: CFC free, HCFC free, with zero ozone depletion potential\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eRot proof, odourless and non-hygroscopic: will not attract vermin or support mould or fungi\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLightweight, low-itch and easy to handle on site\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBRE Green Guide rating A+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThickness: 150mm; width: 2 x 570mm or 3 x 380mm; length: 8.05m; coverage: 9.18m² per roll\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance: 3.40 m²K\/W; vapour resistivity: 5.00 MNs\/g.m\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePacks per pallet: 24; pallet product code: 2404155\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100mm base plus a 150mm cross-laid layer gives 250mm total, just below the 270mm commonly specified in England and Wales\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100mm base plus two 150mm cross-laid layers gives 400mm total, for a U-value of approximately 0.11 W\/m²K where maximum performance is wanted\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eKeep insulation clear of downlights and other heat-producing fixtures, using non-combustible covers where required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore indoors, dry and flat; protect from prolonged sunlight and moisture\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAlways refer to the Knauf Loft Roll Installation Guide before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655775383886,"sku":"BM001301","price":31.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-loft-roll-44-combi-cut-150mm-bm001301-mineral-fibre-insulation-1172606916.jpg?v=1749571084"},{"product_id":"170mm-knauf-loft-roll-44-combi-cut-7-03m-x-1-14m-2-x-570mm-3-x-380mm","title":"170mm Knauf Loft Roll 44 Combi-cut 1140mm x 7.03m - 8.01m2 per pack","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eKnauf Loft Roll 44 (170mm) is a glass mineral wool loft insulation roll for insulating cold pitched roofs at ceiling level, and it can also be used between joists in suspended timber floors. It is the most practical choice for reaching the standard loft depth in a two-layer installation: laid as a cross-laid layer over a 100mm base between the joists, it brings total depth to 270mm, the depth commonly used to meet the 0.16 W\/m²K roof U-value target under Part L of the Building Regulations in England and Wales. Laying the second layer at right angles to the first helps reduce thermal bridging across the joists for more consistent coverage. Where higher performance or a greater depth is specified, a second 170mm cross-laid layer takes the total to 440mm.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThermal conductivity is 0.044 W\/mK and thermal resistance is 3.85 m²K\/W, giving reliable thermal performance across loft applications. As a glass mineral wool, it also offers a degree of acoustic absorption, helping to soften airborne sound through the ceiling. Each roll measures 1140mm wide by 7.03m long and covers 8.01m², and carries a Euroclass A1 non-combustible reaction-to-fire classification, the best possible rating, meaning the product does not burn.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe combi-cut format means the roll is partially perforated to give widths of 2 x 570mm or 3 x 380mm, so it can be split to sit neatly between joists at standard centres or laid uncut as a full-width cross-laid layer. This reduces cutting and offcuts on site, speeding up installation and helping maintain continuous coverage with fewer gaps.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eManufactured using ECOSE® Technology, Knauf's bio-based binder, it contains no added formaldehyde or phenol, is CFC and HCFC free, and has zero ozone depletion potential. Made with up to 80% recycled glass content, it is one of the more environmentally responsible loft insulation products available. Modern manufacturing means it is classed as low itch and more pleasant to handle, though gloves and basic protection remain sensible when working with any mineral wool. Rot proof, odourless and non-hygroscopic, it will not attract rodents or support the growth of mould, fungi or bacteria, and will last for the lifetime of the building.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eInstall in line with the Knauf Loft Roll Installation Guide and the project specification, taking care not to block eaves ventilation. A full step-by-step walkthrough is available in the [loft insulation guide](LOFT INSULATION GUIDE LINK). Suitable for both new build and renovation work, it offers a straightforward route to improving loft thermal performance and reducing heat loss.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.044 W\/mK: reliable, effective thermal performance for loft applications\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance (R-value) of 3.85 m²K\/W for the 170mm roll\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible: the best possible reaction-to-fire classification, meaning the product does not burn\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCombi-cut format, partially perforated at 2 x 570mm and 3 x 380mm to suit standard joist centres\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e8.01m² coverage per roll\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThe practical choice for reaching the 270mm standard loft depth as a cross-laid layer over a 100mm base\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAlso suitable as a primary single layer between joists, or in suspended timber floors\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured with ECOSE® Technology, a bio-based binder with no added formaldehyde or phenol\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with up to 80% recycled glass content: CFC free, HCFC free, with zero ozone depletion potential\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eRot proof, odourless and non-hygroscopic: will not attract vermin or support mould or fungi\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLightweight, low-itch and easy to handle on site\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBRE Green Guide rating A+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThickness: 170mm; width: 2 x 570mm or 3 x 380mm; length: 7.03m; coverage: 8.01m² per roll\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance: 3.85 m²K\/W; vapour resistivity: 5.00 MNs\/g.m\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePacks per pallet: 24; pallet product code: 2404156\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100mm base plus a 170mm cross-laid layer gives 270mm total, the standard depth for the 0.16 W\/m²K roof U-value target under Part L\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100mm base plus two 170mm cross-laid layers gives 440mm total, for a U-value of approximately 0.10 W\/m²K where higher performance is wanted\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eKeep insulation clear of downlights and other heat-producing fixtures, using non-combustible covers where required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore indoors, dry and flat; protect from prolonged sunlight and moisture\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAlways refer to the Knauf Loft Roll Installation Guide before installation\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655775646030,"sku":"BM001587","price":31.66,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-loft-roll-44-combi-cut-170mm-bm001587-mineral-fibre-insulation-1172606911.jpg?v=1749570970"},{"product_id":"20kg-knauf-joint-filler-premium","title":"20kg Knauf Joint Filler Premium","description":"\u003cp\u003eKnauf Joint Filler Premium is a high-quality powdered compound formulated for jointing and finishing internal plasterboard installations. When mixed with water, it produces a smooth, creamy filler that is ideal for embedding reinforcing joint tape, filling board joints and covering fasteners. Designed to deliver consistent workability and a refined surface, this premium joint filler helps create a seamless base ready for decorating.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFormulated to deliver an even, flat surface that is easy to decorate\u003c\/li\u003e\n\u003cli\u003eMixes to a creamy consistency that spreads and levels easily\u003c\/li\u003e\n\u003cli\u003eBonds reliably to plasterboard surfaces and reinforcing tape\u003c\/li\u003e\n\u003cli\u003eEngineered to reduce cracking and movement as it cures\u003c\/li\u003e\n\u003cli\u003eSuitable for jointing and finishing walls and ceilings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to Know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMust be mixed with clean water to the correct consistency before application\u003c\/li\u003e\n\u003cli\u003eApply using appropriate trowels and finishing tools for best results\u003c\/li\u003e\n\u003cli\u003eEmbedding reinforcing tape improves joint strength and reduces cracking\u003c\/li\u003e\n\u003cli\u003eInterior use only\u003c\/li\u003e\n\u003cli\u003eBoards should be dry, clean and free of dust before application\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":52655852290382,"sku":"BM010493","price":22.06,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-joint-filler-premium-20kg-bm010493-building-consumables-1172606469.webp?v=1749563163"},{"product_id":"65mm-knauf-insulation-dritherm®-cavity-slab-37-1-2m-x-455mm-10-per-pack","title":"65mm Knauf Insulation DriTherm® Cavity Slab 37  1.2m x 455mm (10 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eNot every cavity is a round number, and 65mm Knauf Insulation DriTherm® Cavity Slab 37 exists for the ones that are not. It returns a thermal resistance of 1.75 m²K\/W at a thermal conductivity of 0.037 W\/mK, filling a 65mm cavity completely rather than leaving the void a nominal 50mm or 75mm slab would.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs measure 1200mm x 455mm and are supplied 10 per pack, covering 5.460m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe 455mm slab width is deliberate. It matches standard vertical wall tie spacings, so each slab drops between the ties and closes tight against the one below it. Coverage figures assume that fit, which is why measuring the cavity and the tie spacing before ordering is worth the five minutes.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSized for a 65mm cavity where a 50mm or 75mm slab would not fully fill\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 1.75 m²K\/W\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.037 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e455mm width matched to standard vertical wall tie spacings\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e10 slabs per pack covering 5.460m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent additive resists moisture ingress\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFull fill without cavity barriers under Approved Document B\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eProduct declaration in conformity with BS EN 13162\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMeasure the built cavity width, not the drawing, before committing to a thickness\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eA partially filled cavity does not perform as a full-fill construction\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eButt slabs tightly at every joint to keep the layer continuous\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs adapt to slight imperfections in the substrate, unlike rigid boards\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAwarded the Eurofins Gold Certificate for Indoor Air Comfort\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDamaged, contaminated or wet slabs must not be used\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":53007276736846,"sku":"BM010026","price":20.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-37-1200mm-x-455mm-x-50mm-bm004684-mineral-fibre-insulation-1172607673.jpg?v=1749584284"},{"product_id":"85mm-knauf-insulation-dritherm®-cavity-slab-32-1-2m-x-455mm-5-per-pack","title":"85mm Knauf Insulation DriTherm® Cavity Slab 32  1.2m x 455mm (5 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cdiv class=\"_chunkWrapper_yu34g_39\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eExposure is what usually decides a cavity wall specification on the coast or on high ground, and 85mm Knauf Insulation DriTherm® Cavity Slab 32 is certificated for it. DriTherm® Cavity Slabs hold BBA Agrément Certificate 95\/3212 for use in all exposure zones, including those classed as Very Severe, when installed, used and maintained in line with that certificate.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe slab delivers a thermal resistance of 2.65 m²K\/W from a thermal conductivity of 0.032 W\/mK. Slabs are 1200mm x 455mm and supplied 5 per pack, covering 2.730m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe BBA certificate also confirms that DriTherm® slabs will not transmit water to the inner leaf of a masonry cavity wall, nor carry moisture by capillary action across the cavity or up from below damp proof course level. That, rather than the water-repellent additive alone, is what makes a full-fill approach viable in exposed locations.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 2.65 m²K\/W at 0.032 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCertificated by the BBA for use in all exposure zones, including Very Severe\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWill not transmit water to the inner leaf or by capillary action across the cavity\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 5 per pack covering 2.730m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNon-combustible glass mineral wool with Euroclass A1 reaction to fire\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFibres are unaltered by wetting, so thermal properties are unaffected by moisture\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eRot proof, non-hygroscopic and will not sustain vermin\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with up to 80% recycled content\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eProduct declaration in conformity with BS EN 13162\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFull-fill construction is approved to 12m in any exposure zone, and to 25m in multi-storey applications\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eExposure zone should be established at design stage, as it governs the wall construction as a whole\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs are 85mm to suit an 85mm cavity; check the cavity width before ordering\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eExposed slab faces should be covered at the end of each working day or in heavy rain\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWet, damaged or contaminated slabs must not be used\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs are light to handle and cut on site with standard tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":54556999024974,"sku":"BM010022","price":29.41,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-32-1200mm-x-455mm-x-75mm-bm005129-mineral-fibre-insulation-1172607685.jpg?v=1749561246"},{"product_id":"85mm-knauf-insulation-dritherm®-cavity-slab-37-1-2m-x-455mm-8-per-pack","title":"85mm Knauf Insulation DriTherm® Cavity Slab 37  1.2m x 455mm (8 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e85mm Knauf Insulation DriTherm® Cavity Slab 37 fills an 85mm masonry cavity completely, returning a thermal resistance of 2.25 m²K\/W at a thermal conductivity of 0.037 W\/mK. Slabs measure 1200mm x 455mm and are supplied 8 per pack, covering 4.368m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eFull-fill mineral wool simplifies the fire strategy for a cavity wall. Because DriTherm® Cavity Slabs are non-combustible with a Euroclass A1 reaction to fire classification and the cavity is completely filled, cavity barriers are not required to meet Approved Document B requirements. On a partial-fill build-up, those barriers are an additional product, an additional trade interface and an additional inspection point.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eInstall as the wall is built, friction fitted between the leaves and between wall ties.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 2.25 m²K\/W in an 85mm full-fill cavity\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.037 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible, the highest classification available\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFull-fill solution that does not require cavity barriers under Approved Document B\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 8 per pack covering 4.368m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent additive resists moisture ingress\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNo retaining discs, clips or jointing tape required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eApproved for masonry cavity walls up to 25 metres in height\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured to BS EN 13162\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFire strategy is a whole-building matter; confirm requirements against the project specification\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAn 85mm slab is for an 85mm cavity, not a partial fill of something wider\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWall ties should be specified to suit the cavity width\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eButt slabs tightly and keep the cavity free of mortar droppings\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs will not encourage the growth of fungi, mould or bacteria\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCover exposed slab faces at the end of each day's work or in heavy rain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":54557219815758,"sku":"BM009978","price":20.78,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-37-1200mm-x-455mm-x-50mm-bm004684-mineral-fibre-insulation-1172607673.jpg?v=1749584284"},{"product_id":"75mm-knauf-insulation-dritherm®-cavity-slab-34-1-2m-x-455mm-10-per-pack","title":"75mm Knauf Insulation DriTherm® Cavity Slab 34  1.2m x 455mm (10 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e75mm Knauf Insulation DriTherm® Cavity Slab 34 covers more wall per pack than any other 75mm slab in the range: 10 slabs of 1200mm x 455mm giving 5.460m² per pack. On a large plot with a lot of linear metres to fill, that is fewer packs to move, open and dispose of.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThermal resistance is 2.20 m²K\/W at a thermal conductivity of 0.034 W\/mK.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eKnauf's three-tier compression packaging is what makes the pack count possible. More product goes onto each pack and pallet, which means less polyethylene per m² of insulation, fewer vehicles carrying the same coverage, and less storage space taken up on site. The wrapping itself is made from 30 to 50% recycled plastic and is fully recyclable.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e10 slabs per pack covering 5.460m², the widest 75mm coverage in the DriTherm® range\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 2.20 m²K\/W\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs sized to standard vertical wall tie spacings\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCompression packaging reduces packaging, transport and site storage per m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePackaging made from 30 to 50% recycled LDPE and fully recyclable\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent glass mineral wool\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCovered by BBA Agrément Certificate 95\/3212\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSuits a 75mm cavity; the slab must match the cavity width to fully fill it\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLarger packs are heavier to move, so plan unloading and site storage accordingly\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs must be tightly butted to keep the insulation layer continuous\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs are light and easy to handle, but edges and corners crush if mishandled\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIf the main hood is removed or damaged, keep remaining packs under cover\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured with ECOSE® Technology, containing no added formaldehyde or phenol\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":54868311114062,"sku":"BM010024","price":43.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-32-1200mm-x-455mm-x-150mm-bm007043-mineral-fibre-insulation-1172607674.jpg?v=1758716307"},{"product_id":"100mm-knauf-insulation-dritherm®-cavity-slab-34-1-2m-x-455mm-8-per-pack","title":"100mm Knauf Insulation DriTherm® Cavity Slab 34  1.2m x 455mm (8 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eIf there is a default full-fill cavity slab in British housebuilding, 100mm Knauf Insulation DriTherm® Cavity Slab 34 is it: a 100mm slab in a 100mm cavity, giving a thermal resistance of 2.90 m²K\/W at a thermal conductivity of 0.034 W\/mK.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs measure 1200mm x 455mm and are supplied 8 per pack, covering 4.368m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eInstallation is the reason it holds that position. Slabs are friction fitted between the inner and outer leaves as the wall is built, sitting between the wall ties without retaining discs, clips or jointing tape. There is no second product to order, nothing to fix and nothing to go wrong in sequencing, which keeps the bricklaying rhythm intact.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 2.90 m²K\/W in a standard 100mm cavity\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFriction fit between wall ties with no retaining discs or jointing tape required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 8 per pack covering 4.368m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eInstalled as the wall is built, keeping the bricklaying sequence simple\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent additive resists moisture ingress\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFull-fill solution that does not require cavity barriers under Approved Document B\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured to BS EN 13162\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWall ties should be at standard vertical spacings for slabs to sit cleanly between them\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlab thickness and cavity width must match; a 100mm slab is for a 100mm cavity\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eKeep mortar droppings off the slab tops as work proceeds\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCuts cleanly with an insulation saw for closing at reveals and returns\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs will not encourage the growth of fungi, mould or bacteria\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCover exposed slab faces at the end of each working day or in heavy rain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":54868318028110,"sku":"BM010025","price":41.22,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-32-1200mm-x-455mm-x-150mm-bm007043-mineral-fibre-insulation-1172607674.jpg?v=1758716307"},{"product_id":"125mm-knauf-insulation-dritherm®-cavity-slab-34-1-2m-x-455mm-6-per-pack","title":"125mm Knauf Insulation DriTherm® Cavity Slab 34  1.2m x 455mm (6 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eStepping from a 100mm cavity to 125mm is often the cheapest route to a better U-value, and 125mm Knauf Insulation DriTherm® Cavity Slab 34 is the slab that follows it. Thermal resistance is 3.65 m²K\/W at a thermal conductivity of 0.034 W\/mK, a clear gain on the 2.90 m²K\/W available from the same grade at 100mm.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eSlabs are 1200mm x 455mm and supplied 6 per pack, covering 3.276m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThe material behaves well over the long term at any depth. DriTherm® Cavity Slabs are odourless, rot proof, non-hygroscopic and will not sustain vermin, and Knauf states that the product will have a life equivalent to that of the wall structure it sits within. There is no degradation curve to allow for in the calculation.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 3.65 m²K\/W, a substantial step up from the 100mm slab in the same grade\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.034 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eOdourless, rot proof and non-hygroscopic\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWill not sustain vermin or encourage fungi, mould or bacteria\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLife equivalent to that of the wall structure\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 6 per pack covering 3.276m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent glass mineral wool\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCertified by EUCEB as made from non-classified fibres\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eConfirm wall tie length is specified for a 125mm cavity\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThe slab must match the cavity width to achieve a full fill\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIncreasing cavity width affects lintels, cavity trays and reveal details, not just the slab\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs knit together at joints, so butt them tightly for continuous coverage\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStore dry, flat and protected from prolonged sunlight\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDiscard any slab that has become wet, damaged or contaminated\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":54868329890126,"sku":"BM010023","price":38.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-34-1200mm-x-455mm-x-75mm-mineral-fibre-insulation-1194540091.webp?v=1758721672"},{"product_id":"150mm-knauf-insulation-dritherm®-cavity-slab-34-1-2m-x-455mm-5-per-pack","title":"150mm Knauf Insulation DriTherm® Cavity Slab 34  1.2m x 455mm (5 per pack)","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e150mm Knauf Insulation DriTherm® Cavity Slab 34 is the deepest slab in the 34 range, giving a thermal resistance of 4.40 m²K\/W from a thermal conductivity of 0.034 W\/mK in a single full-fill layer. Slabs measure 1200mm x 455mm and are supplied 5 per pack, covering 2.730m².\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eWide cavities put more of the wall's performance in the hands of the insulation, which puts more weight on how it behaves when wet. The water-repellent additive leaves the physical and chemical characteristics of the fibres unaltered by wetting, so thermal properties are not affected by exposure to moisture and the slab performs as expected once dry and undamaged.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003eThat is the practical difference between a water-repellent mineral wool and a material that simply resists water at the surface.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 4.40 m²K\/W at 0.034 W\/mK\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFibre characteristics unaltered by wetting, so thermal performance is not affected by moisture\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePerforms as expected once dry and undamaged\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm x 455mm slabs, 5 per pack covering 2.730m²\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eWater-repellent additive gives a further line of defence against moisture ingress in construction\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 non-combustible\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eVapour resistivity of 5.00 MNs\/g.m\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eApproved by the BBA for full-fill masonry cavity walls up to 25 metres in height\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufactured under ISO 9001, ISO 14001, ISO 45001 and ISO 50001 certified systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"auto\"\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"auto\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eA 150mm cavity requires wall ties, lintels and trays specified for that width\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlab thickness must match the cavity width for a full fill\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs that have become saturated must not be used, even though the fibres are water-repellent\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCover exposed work at the end of each day and in heavy rain\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIn coastal locations use additional covering or store indoors\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSlabs are light to handle; avoid crushing edges and corners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":54868336705870,"sku":"BM005986","price":39.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-dritherm-cavity-slab-34-1200mm-x-455mm-x-75mm-mineral-fibre-insulation-1194540091.webp?v=1758721672"},{"product_id":"18mm-knauf-gifa-fhb-floor-panel-1-2m-x-600mm","title":"18mm Knauf GIFA FHB Floor Panel  1.2m x 600mm","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"pf0\"\u003e\u003cspan class=\"cf0\"\u003eKnauf GIFA FHB Floor Panel is a robust gypsum-fibre reinforced panel designed as an interior floor lining solution that combines strength, stability and sound performance. Available in a \u003c\/span\u003e\u003cspan class=\"cf0\"\u003erange of\u003c\/span\u003e\u003cspan class=\"cf0\"\u003e sizes and thicknesses, these panels are engineered to perform as part of internal floor constructions where a dependable, flat, high-quality surface is required. The dense core provides rigid support for finished floor coverings such as timber, tiles or vinyl, while contributing to overall floorboard stability and consistency across a variety of build-ups.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pf0\"\u003e\u003cstrong\u003e\u003cspan class=\"cf1\"\u003eBenefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"pf1\"\u003e\n\u003cspan class=\"cf0\"\u003eS\u003c\/span\u003e\u003cspan class=\"cf0\"\u003etrong and dimensionally stable\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eSuitable for multiple thicknesses\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eProvides a smooth, flat base for floor finishes to lay evenly\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eImprove acoustic performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eReliable internal floor solution\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eCan be fixed and finished using common drywall tools\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"pf0\"\u003e\u003cstrong\u003e\u003cspan class=\"cf1\"\u003eGood to know\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eIntended internal floors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eBoard thickness affects performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eInstall on a clean, dry, and level surface\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eNot a decorative surface, finishing is required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eFollow the recommended fixing and jointing guidelines to ensure panel stiffness and minimise movement\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eNot a load-bearing board, structural framing is required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eCan be trimmed and shaped with typical drylining cutting tools\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":54915048276302,"sku":"BM001822","price":36.71,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-18mm-knauf-gifafloor-fhb18-1200mm-x-600mm-bm001822-gypsum-fibre-1195849477.jpg?v=1759419710"},{"product_id":"25mm-knauf-gifa-fhb-floor-panel-1-2m-x-600mm","title":"25mm Knauf GIFA FHB Floor Panel  1.2m x 600mm","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"pf0\"\u003e\u003cspan class=\"cf0\"\u003eKnauf GIFA FHB Floor Panel is a robust gypsum-fibre reinforced panel designed as an interior floor lining solution that combines strength, stability and sound performance. Available in a \u003c\/span\u003e\u003cspan class=\"cf0\"\u003erange of\u003c\/span\u003e\u003cspan class=\"cf0\"\u003e sizes and thicknesses, these panels are engineered to perform as part of internal floor constructions where a dependable, flat, high-quality surface is required. The dense core provides rigid support for finished floor coverings such as timber, tiles or vinyl, while contributing to overall floorboard stability and consistency across a variety of build-ups.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"pf0\"\u003e\u003cstrong\u003e\u003cspan class=\"cf1\"\u003eBenefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"pf1\"\u003e\n\u003cspan class=\"cf0\"\u003eS\u003c\/span\u003e\u003cspan class=\"cf0\"\u003etrong and dimensionally stable\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eSuitable for multiple thicknesses\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eProvides a smooth, flat base for floor finishes to lay evenly\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eImprove acoustic performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eReliable internal floor solution\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eCan be fixed and finished using common drywall tools\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"pf0\"\u003e\u003cstrong\u003e\u003cspan class=\"cf1\"\u003eGood to know\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eIntended internal floors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eBoard thickness affects performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eInstall on a clean, dry, and level surface\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eNot a decorative surface, finishing is required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eFollow the recommended fixing and jointing guidelines to ensure panel stiffness and minimise movement\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eNot a load-bearing board, structural framing is required\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"pf1\"\u003e\u003cspan class=\"cf0\"\u003eCan be trimmed and shaped with typical drylining cutting tools\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":54915919413582,"sku":"BM002109","price":36.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-18mm-knauf-gifafloor-fhb18-1200mm-x-600mm-bm001822-gypsum-fibre-1195849477.jpg?v=1759419710"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/collections\/11.png?v=1760950035","url":"https:\/\/www.insulationuk.co.uk\/collections\/knauf-building-products.oembed?page=4","provider":"Insulation UK","version":"1.0","type":"link"}