9.18m2 per pack Knauf Loft Roll 44 at 150 mm thickness is a high‑performance glass mineral wool insulation quilt designed for ceiling/loft applications in cold lofts and pitched roofs. It has a thermal conductivity of 0.044 W/m·K, giving it an R‑value of about 3.40 m²·K/W for that 150 mm depth. The roll is “combi‑cut” (≈1,140 mm wide) with perforations so it can be split into either two strips of ~570 mm each (good for 600 mm joist centres) or three of ~380 mm (for 400 mm centres), or used full‑width It is non‑combustible with a Euroclass A1 fire classification, made with Knauf’s ECOSE® binder (which reduces formaldehyde and VOCs), and is lightweight, odourless, rot‑proof, non‑hygroscopic, and resistant to mould, bacteria and vermin. Because of its thickness, it offers significantly better thermal insulation and energy saving over thinner rolls, helping reduce heat loss through the loft.
