The TGX underlay consists of a glass tissue carrier coated with polymer modified bitumen. The upper surface is finished with fine sand and the lower surface has a sacrificial film which rapidly melts during the torching operation. Please note this is an economy torch on underlay from IKO and works out at 18.55 ex. Vat per roll. TGX Torch on roofing membranes are produced using polyester and glass reinforcements having exceptional dimensional stability. The reinforcements are impregnated and then coated with a polymer modified bitumen which provides good high temperature performance and resistance to damage and marking during application. Properties Length: 16m. Width: 1m. Roll size: 16m2. Roll weight: 32kg. Weight: 2kg per m2. Polymer modified bitumen torch-on roofing membrane Torch-on application. Can be used on both flat and sloping roofs. Ideal for new roofs and the repair of existing felt and asphalt roofs. Polyester and glass reinforcements provide excellent dimensional stability. Provides good high temperature performance. Resistant to damage and marking during application.