A three-layer material. The loadbearing portion consists of a PE grid providing the necessary strength, top and bottom layers of polyethylene film providing waterproofing and vapor tight capability. The film prevents vapor formed during household activities from penetrating the roof structure and thermal insulation. Prevents condensation in insulating layers, which protects the roof from heat loss and leakage, thereby increasing efficiency. The SPECIAL version of the film is non-flammable.
Use Vapor permeable film D or Contact membrane when diffusive open film and membranes are required.