{"product_id":"300mm-knauf-factoryclad-roll-40-uncut-3-20m-x-1-2m","title":"300mm Knauf FactoryClad Roll 40 (Uncut) 3.2m x 1.2m - 3.84m2 per roll","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e300mm Knauf FactoryClad Roll 40 is the deepest glass mineral wool cladding roll Knauf produce, and the ceiling of the FactoryClad range across all three grades. Knauf's own literature describes the range as running to 300mm, and there is nothing above it. That makes this the last thickness that goes into a built-up metal roof or wall as a single continuous layer, which is the real distinction at the top of a range rather than the headline figure alone.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eEach roll measures 3.20m by 1200mm and covers 3.84m², with 24 rolls to a pallet giving 92.16m², the lowest coverage per roll and per pallet in the range. Declared thermal conductivity is 0.040 W\/mK, producing a thermal resistance of 7.50 m²K\/W, and water vapour resistivity is 5.00 MNs\/g.m. Published embodied carbon is 2.59 kgCO₂e\/m² across stages A1 to A3 and 3.44 kgCO₂e\/m² across A1 to C4.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe single-layer point is worth dwelling on. A quilt laid in one pass gives one plane of insulation with joints only between adjacent rolls, all running the same way and all closing against each other. Once a build-up needs two laminated layers, there is a second set of joints to register, cross-joints to stagger deliberately so they do not line up, and more chance of a gap being left somewhere in the middle of the assembly where nobody will ever see it. Reaching 7.50 m²K\/W without any of that is the argument for taking the depth in one roll while the range still offers it.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eInstallation follows the same sequence as every thickness below it: liner sheet fixed, quilt laid over it, spacer system brought up to take it into the cavity, outer profiled sheet fixed last, to Knauf Insulation's guidance and the cladding system manufacturer's details. At 300mm the spacer system is bespoke rather than catalogue and should be agreed with the cladding system supplier at design stage. It is also worth being straight about the limits: at this depth the brackets penetrating the layer, not the wool, largely determine what the assembly achieves, so a modelled U-value calculation to BS EN ISO 10211:2017 is the only way to know what the depth is actually buying. Knauf's Technical Services Team will produce that calculation. The thickness suits envelopes carrying a demanding fabric target, including buildings served by low-temperature heating such as heat pumps, where the plant depends on low heat loss to run efficiently, and on farms it tends to appear on one-off builds specified above the regulatory minimum rather than to it.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eKey Benefits of Knauf FactoryClad Roll 40:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\" 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 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal resistance of 7.50 m²K\/W, the highest in the FactoryClad range.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThe deepest FactoryClad roll Knauf make, across all three grades.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAchieves the depth in a single continuous layer, with no laminated cross-joints to stagger.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeclared thermal conductivity of 0.040 W\/mK.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEuroclass A1 reaction to fire, non-combustible to BS EN 13501-1.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e3.84m² per roll, and 92.16m² per pallet across 24 rolls.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1200mm roll width to suit rail and bracket spacer systems.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eKnauf will produce a numerically modelled U-value calculation for the specific build-up.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade with up to 80% recycled content and bound with ECOSE® Technology.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eRot proof and non-hygroscopic, with a service life equivalent to that of the structure.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePerformance declared under G4207GPCPR against BS EN 13162:2012+A1:2015.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul dir=\"ltr\" 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 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eThis is the deepest single layer available:\u003c\/strong\u003e anything beyond 7.50 m²K\/W from FactoryClad means laminating two layers, with the extra jointing and design that brings.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eThe brackets govern the result at this depth:\u003c\/strong\u003e ask for a modelled calculation to BS EN ISO 10211:2017 rather than a simplified figure, or the depth may not deliver what it looks like on paper.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eBespoke spacer system:\u003c\/strong\u003e 300mm is well beyond catalogue bracket depths, so agree it with the cladding system supplier at design stage rather than at order stage.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLowest coverage in the range at 3.84m² per roll, so take off the area properly before ordering.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAvailable in the 40 grade only, as Roll 35 stops at 220mm and Roll 32 at 80mm.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThe 40 denotes a declared conductivity of 0.040 W\/mK, not a thickness.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSupplied uncut at 3.20m per roll and unfaced on both faces.\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNon-hygroscopic, but not moisture resistant. Keep it dry and covered, and discard any roll that has taken water.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eAt the top of the range, 300mm puts 7.50 m²K\/W into a built-up system in one continuous layer, which is as far as FactoryClad goes and as simple as that depth gets.\u003c\/p\u003e\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Knauf","offers":[{"title":"Default Title","offer_id":55262211146062,"sku":null,"price":0.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0894\/1083\/0670\/files\/knauf-knauf-insulation-factoryclad-roll-40-uncut-300mm-3-20m-x-1-2m-bm005980-mineral-fibre-insulation-1216519862.png?v=1768397833","url":"https:\/\/www.insulationuk.co.uk\/products\/300mm-knauf-factoryclad-roll-40-uncut-3-20m-x-1-2m","provider":"Insulation UK","version":"1.0","type":"link"}