Knauf Insulation Loft Roll 44 is a flexible Glass Mineral Wool quilt, primarily designed for thermal insulation of pitched roofs at ceiling level.These A1 non-combustible rolls are manufactured using Knauf Insulation's unique ECOSE ¾ Technology which reduces embodied energy and delivers superior environmental sustainability The 170mm thick, combi-cut Loft Roll 44 has a 8.01m² area per roll, is 1140 wide and partially perforated to produce either 2 rolls 570mm wide or 3 rolls 380mm wide.