... 2 Market:Middle East,Europe,America 3 Certificate:ISO9001 waterproof membrane Describation width(m) length (m) weight (kg/ ... vapor permeable membraneJianda brand waterproof and vapor permeable membrane is polymer modified asphalt based, with surface of ... weather resistance, corrosion resistance, anti-aging, antioxidant. Excellent waterproofing performance and encase nail holes.Good permeability, can be ...