... .good strechbility, waterproof, anti-aging 1.pvc roofing membrane 2.Thickness:1.0mm,1.20mm,1.50mm,2. ... 4. for roof,tunnelpvc roofing membrane1.Item:Pvc waterproofing membrane 2.Specification:1.0mm, 1.20mm, 1.50mm, ... influences High tensile strength and elongation High stable in change of dimensions Excellent flexibility in cold Water Impermeability Best weldability high quality PVC roofing membrane