Specification: Diamond Fibre Construction: 100% Polypropylene Colour Fastness: Light (BS EN ISO 105:B02): 6 Colour Fastness: Wet Rubbing (BS EN ISO 105: B01): 5 Colour Fastness: Dry Rubbing (BS EN ISO 105: X12): 5 Flammability (BS6307) Methanamine Pill Test: Pass Formats Sheet Tile Backing Rubber Crumb Bitumen Size 2m x 4m 50 x 50cm Weight 2,670gsm 4,980gsm Thickness 10.50mm 11.00mm