Description Sheetseal GR is a cold applied, high density polyethylene film, bonded to aluminium foil and coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone release paper. The product generally requires a primer for vertical or sloping surfaces, ie. Sheetseal Primer. WATERPROOF METHANE AND CARBON DIOXIDE GAS BARRIERSheetseal GR is typically used where a methane and carbon dioxide gas barrier is required, combined with the waterproofing. When designing Type A structures (as classified in BS8102:2009), the product applied correctly, is capable of providing the levels of protection required for grades 1, 2 & 3 basements. Sheetseal GR has been tested by Wimpey Laboratories for methane gas resistance. The test results are outlined within the product data sheet. Uses Where methane is present in the ground Basement tanking (External) Basement tanking (Internal) Retaining walls Ground floor DPM Benefits Suppresses Methane and Carbon Dioxide Water and water vapour barrier Factory controlled thickness Quick and easy to install Elastic & flexible Self healing properties No drying time Sulphate resistant
