Knauf Earthwool Combi cut Insulation Loft Roll 44Knauf Insulation Loft Roll 44 is a Glass Mineral Wool roll, designed for use in cold lofts where pitched roofs are insulated at ceiling level, that offers good thermal performance in the range. It is non combustible insulation with the best possible Euroclass A1 reaction to fire classification, and is manufactured using Knauf Insulation's unique bio based binder, ECOSE Technology. Thickness (mm) Length (mm) Width (mm) Thermal Conductivity (W mK) R