{"product_id":"bulk-buy-150mm-knauf-loft-roll-44-combi-cut-1140mm-x-8-05m","title":"Bulk Buy - 150mm Knauf Loft Roll 44 Combi-cut 1140mm x 8.05m - 9.18m2 per roll","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eStocking up on the 150mm Knauf Loft Roll 44 Combi-cut in bulk is a sensible way to control material costs on larger loft projects, particularly the ones where insulation is layered up to reach the depth you're after. This mid-depth glass mineral wool roll is made for cold pitched roofs at ceiling level, and can also sit between joists in suspended timber floors. Its usual job is as a cross-laid overlay: run at right angles over a base layer between the joists, it lifts the overall depth and breaks up thermal bridging across the timber for steadier performance. Where 150mm is enough on its own, it does the job as a single primary layer instead. Light to lift \u0026amp; simple to cut, it keeps the work manageable even for anyone tackling a loft for the first time.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eIt has a thermal conductivity of 0.044 W\/mK and a thermal resistance of 3.40 m²K\/W, and as a glass mineral wool it adds a degree of acoustic absorption alongside the thermal side, softening airborne sound through the ceiling. Each roll is 1140mm wide and 8.05m long, covering 9.18m², and the combi-cut perforations let you split it into 2 x 570mm or 3 x 380mm widths to match standard joist centres, or leave it whole for a full-width cross-laid run that cuts down on offcuts.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eLike the rest of the range, it's made with ECOSE® Technology, Knauf's bio-based binder, so there's no added formaldehyde or phenol, it's CFC \u0026amp; HCFC free, and it carries zero ozone depletion potential, with up to 80% recycled glass in every roll. It's rot proof, odourless \u0026amp; non-hygroscopic, won't draw in vermin or feed mould, fungi or bacteria, and lasts the life of the building. A dependable pick for retrofit \u0026amp; new build alike.\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\"\u003eBuying in bulk offers better value on larger projects and helps keep material costs down\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThermal conductivity of 0.044 W\/mK for reliable, effective thermal performance\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 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 \u0026amp; 3 x 380mm to suit standard joist centres\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\"\u003eLightweight, low-itch \u0026amp; easy to handle on site\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 \u0026amp; 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\"\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\"\u003eEach roll covers 9.18m²\u003c\/li\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\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\"\u003e100mm base plus a 150mm cross-laid layer gives 250mm total, just below the 270mm commonly specified in England \u0026amp; 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 \u0026amp; 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 \u0026amp; flat; protect from prolonged sunlight \u0026amp; 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":59956404420942,"sku":"BM001301-BULK","price":28.31,"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","url":"https:\/\/www.insulationuk.co.uk\/products\/bulk-buy-150mm-knauf-loft-roll-44-combi-cut-1140mm-x-8-05m","provider":"Insulation UK","version":"1.0","type":"link"}