Visqueen GR Self Adhesive Membrane is a foil lined modified bitumen rubber membrane with a self adhesive coating protected by a removable polyethylene release film only available from us in the one length of 1m x 20m. This product is used on sites where gases such as carbon dioxide, radon or methane are an issue. This includes sites that used to be brownfields or ex-landfill sites. It is designed to stop the spread of these harmful gases in tanking applications or in hydrostatic pressure situations. This is achieved because of its central aluminium foil core. The membrane can be applied to a variety of substrates including concrete, blockwork, brickwork, particle boards and steelwork, in both vertical and horizontal applications. This product should be used with Visqueen Tanking Primer in order to prepare the surfaces to receive the self adhesive membrane.