ROCKWOOL Thermal Loft Roll is a medium density, mineral wool insulation developed specifically for loft spaces. This non-combustible material can withstand temperatures up to 1000°c, helping to reduce the risk of fire spread. Easy to handle and lightweight, it's supplied in a pre-split twin roll of 100/200mm thicknesses for quick application. 100 thickness for laying between joists, and 200mm to layer over joints to give a total recommended coverage of 300mm. It also offers high acoustic performance to reduce unwanted noise.