... .5mm 2.0mm 2).Convenient maitance with low cost PVC waterproof membrane 1).Durable: If the pvc membranes used on exposed surfaces ... construction for roof construction, subway, bridges, channel tunnel, planted roof, waterproof and drainage system, pools, dam, irrigation system, light steel roof ... -25°C, No CrackImpermeability(0.3MPa*2h) ImpermeableAnti-punchImpermeable PVC waterproof membrane