Waterproofing membrane reflective can not only reflect the heat radiation from the roof, but also has the function of breathable. Reflective Waterproof Membrane adopts vacuum aluminum plating method to add a layer of aluminum foil on the surface of the waterproof membrane. On the one hand, Reflective Waterproof Membrane has the effect of heat reflection; on the other hand, the fireproof effect of the waterproof membrane can be improved; Third, the service life of the waterproof membrane is extended.Reflective Waterproof Membrane is suitable for any wall system that needs moisture protection.This low emissivity membrane is particularly effective in lightweight wall structures, such as timer frame or steel structure buildings, as well as masonry and internal insulation upgrades. In winter, the reflective breathing membrane can effectively block the diffusion of indoor heat radiation, reduce the loss of indoor heat and strengthen the thermal insulation effect of the building. In summer, reflective breathable membrane can play an excellent role in heat insulation.The reflective breathable membrane reflects the outdoor radiation, reduce the building's absorption of heat radiation so as to keep the indoor air cool and reduce the refrigeration energy consumption. Therefore, the reflective house wrap can be effectively applied no matter in what kind of insulation climate zone, with good thermal insulation, waterproof and vapor permeation effect and play a significant role on the building energy saving. Property Unit Value Detection method Mass per unit area g/m2 130 Thickness mm 0.3 Water vapour transmission (38°C, 90% humidity difference) g/m2.24h 1000 GB/T17146-2015 Water vapour transmission (us) perm 63 Water vapour transmission (ca) ng/Pa/s/m² 3591 Watertightness (According to domestic test method) 2 meters water column 1hours impermeable GB/T328.10-2007A (Without using indicator) Maximum tensile force (MD/CD) N/50mm 220/111 GB/T328.9-2007 Elongation (MD/CD) % 110/100 GB/T328.9-2007 Resistance to tearing MD/CD (nail shank) N 135/100 GB/T328.18-2007 Flexibility at low temperature(no crack) - 20 GB/T328.15-2007 Reaction to fire B1 GB/T5626-2007 Fire class (equal to EU standard) E Artificial ageing by UV and heat (80 Ã?168h)performance retention Tensile(MD/CD) 98%/87% GB/T3512-2014 GB/T328.9-2007 Elongation (MD/CD) 72%/72% Anti UV months More than 4 GB/T2291-2014 Minimum recommended pitch ° 20 Reflectivity % 70 ASTM E408 Emissivity % 20