Waterproof. thermal insulation in rolls made of strips of self-extinguisching expanded polyestyrene, coupled with an elastoplastomeric polymer-bitumen waterproofing membrane reinforced withg glass fibre felt or composite "non-wowen" polyster fabric stabilized with fiberglass, both of which are rot-proof. Consult the technical sheet of the product for the resistance values. The price is understood to be per m▓ including the side overlapping slevedge. Alternatively you can order a 14 cm high membrane in various types and thicknesses.