Product Description: This is a new environmentally-friendly heat insulation material, which is soft, light and easy to install. It is made from aluminum foil and polyethylene through special machinery. It has no odor and toxicity; It not only overcomes the discomfort and environmental damage brought by glass fiber and epispastic materials, but can also resist ultraviolet radiation that can penetrate through sheet iron, concrete, wood and other common heat insulation materials. This new heat insulation material not only has good insulation, heat-reflection & insulation and anti-radiation functions, but also has good moisture-barrier, heat-preservation and energy-saving functions in housing construction ( roof, wall, and floor) . Material structure AL/ bubble/ AL Bubble diameter and height 2.5mm* 10mm, 4mm* 10mm, 7mm* 20mm Size/ roll Normal size: 1.2m* 40m. Max width is 1.58m, length can be customized Reflectivity 96% -97% Water Vapor Transmission 0.013G/ M2KPA Thermal conductivity 0.034 Apparent density 85KG/ M2 Weight 256G/ M2 Tensile strength( MD) 16.98Mpa Tensile strength( TD) 16.5Mpa Corrosion Doesn’ t generate