Product Name:black colour 4mm bitumen waterproofing roofing membrane sheets thickness:,3MM,4MM soluble content:2100g/m2 width:1m use:Waterproof , dampproof Low temperature flexibility:-20,-15,-10,-5 Length:10m/roll Material:SBS Modified Asphalt Surface material:PE film, PET , Sands, Minarel Application:Torch Applied Show More