Bulk Buy - 100mm Knauf Loft Roll 44 Combi-cut 1140mm x 12.18m - 13.89m2 per roll

Buying this 100mm Knauf Loft Roll 44 Combi-cut in bulk is a practical, cost effective choice for larger jobs, helping keep material costs down across a whole loft or multiple properties. It is a glass mineral wool roll for insulating cold pitched roofs at ceiling level, and can also be used between joists in suspended timber floors. The 100mm thickness is designed as the base layer, filling fully between the joists at either 400mm or 600mm centres before cross-laid layers are added over the top to build up the total depth. Lightweight & easy to cut, it makes installation straightforward even for those not in the trade. With a thermal conductivity of 0.044 W/mK and a thermal resistance of 3.40, it delivers reliable thermal performance for loft applications, and as a glass mineral wool it also offers a degree of acoustic absorption to help soften airborne sound through the ceiling. Each roll measures 1140mm wide by 12.18m long and covers 13.89m². The combi-cut format is partially perforated to 2 x 570mm or 3 x 380mm, so each roll splits to suit standard joist centres or lays uncut as a full-width cross-laid layer, reducing cutting & offcuts on site. Manufactured using ECOSE® Technology, Knauf's bio-based binder, it contains no added formaldehyde or phenol, is CFC & 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. Rot proof, odourless & 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. Suitable for both retrofit & new build projects. Benefits Buying in bulk offers better value on larger projects and helps keep material costs down Thermal conductivity of 0.044 W/mK for reliable, effective thermal performance Euroclass A1 non-combustible: the best possible fire classification, meaning the product does not burn Combi-cut format, partially perforated at 2 x 570mm & 3 x 380mm to suit standard joist centres Designed as the base layer between ceiling joists at 100mm depth Lightweight, low-itch & easy to handle on site Manufactured with ECOSE® Technology, a bio-based binder with no added formaldehyde or phenol Made with up to 80% recycled glass content: CFC free, HCFC free, with zero ozone depletion potential Rot proof, odourless & non-hygroscopic: will not attract vermin or support mould or fungi CCPI Verification Mark (certificate number 000600173/0627); BRE Green Guide rating A+ Good to know Each roll covers 13.89m²; supplied. Thickness: 100mm; width: 2 x 570mm or 3 x 380mm; length: 12.18m Thermal resistance: 2.25 m²K/W; vapour resistivity: 5.00 MNs/g.m 100mm plus 170mm gives 270mm total, the depth commonly used to meet loft U-value targets in England & Wales 100mm plus 2 x 200mm gives 500mm total, for a U-value of approximately 0.09 W/m²K where maximum performance is wanted Keep insulation clear of downlights & other heat-producing fixtures, using non-combustible covers where required Compliant with BS EN 13162:2012+A1:2015; manufactured to ISO 9001, ISO 14001, ISO 45001 & ISO 50001 Store indoors, dry & flat; protect from prolonged sunlight & moisture Always refer to the Knauf Loft Roll Installation Guide before installation