... modified membrane Base: Polyester mat Thickness:1.2mm,1.5mm,2mm,3mm,4mm Product IntroductionThe products are produced with SBS blastomeric bitumen ... as raw materials, using polyethylene film, Aluminum foil coated on the upward or no film (both side self-adhesive) while ... building, and the waterproofing of wooden and metal structure roof. Self Adhesive Asphalt Waterproof Membrane