We are a manufacturer of breather roof underlay membrane for waterproofing. SPECIFICATIONS: Structure: pp spunbond nonwoven+polyethylene+pp spunbond nonwoven width: 100cm, 150cm weight: From 30gsm to 400gsm length: 25m-50m-100m hydrostatic head (pa): >2500 tensile Strength (N): 105-350(CD) 65-250(MD) elongation (N): 68-150(CD) 72-150(MD) water-vapor Permeability: 0-2500g/m2: series I>2500, series II around 1000 series III around 15 annual output: 500ton feature: good tearing strength, waterproof, good breathability , soft handle, heat insulation excellent performance breather membrane constructed from high tensile spun-bonded polypropylene layers highest levels of water resistance full moisture vapour permeability