Breathable Waterproof Roof Underlay Membrane

Breathable Waterproof Roof Underlay membrane (PP-PP,S-PP,S-S) Jianda brand waterproof and vapor permeable membrane is polymer modified asphalt based, with surface of high strength polypropylene fiber. Back side coated with self adhesive glue or antiskid sand. Made by special process. With excellent waterproof performance and breathable properties. Description Specification Width Length Thickness Roof underlay 500g/m2PP&PP 1000mm 30m 0.8mm 600g/m2S&PP 1000mm 25m 1.0mm 1500g/m2S&S 1000mm 20m 1.3mm Roof underlay with adhesive band 500g/m2PP&PP 1000mm 30m 0.8mm 600g/m2S&PP 1000mm 25m 1.0mm 1500g/m2S&S 1000mm 20m 1.3mm It is used as the underlayment of cement tile, painted pottery watts and asphalt shingle. Also suitable for all kinds of architectural roofing, walls, underground waterproof and damp proof project. JianDa brand waterproof breathable membrane Test standard EN12310; EN12311; EN1849; ASTM D-97 Mass 400g/m2 ----500g/m2 Elongation 300N/5cm----400N/5cm Tensile 240N/5cm----320N/5cm Resistance to tearing; > 23% Water tightness 0.2MP 24 hours Heat resistance 85°c 24hours Cold flexibility -40°c 24hours no cracks or fractures Dimension make size according to client requirement with adhesive tape on the overlap for the sealing of junction,convention for application. Excellent weather resistance, corrosion resistance, anti-aging, antioxidant. Excellent waterproofing performance and encase nail holes. Good permeability, can be in damp base surface construction, make the maintenance structure internal water vapor rapidly eduction, avoid effectively mould and condensing formationExcellent tensile strength and elongation. large Surface friction, grass-roots closely.no smell,no taste,accord with environmental protection requirements.