Universal vapor barrier film. Thanks to the high coefficient of diffusion resistance Sd> 100 m, it provides optimal protection for the roof structure, walls and thermal insulation itself against water vapor coming from inside the building. The width of 2 m or 4 m facilitates its laying on walls in frame construction and on large areas in industrial facilities. Fastening and connecting the strands: fastening with staples, connecting with Delta-Multi-Band or Delta -DUO TAPE tape.