... thickness:3mm~10mm99% pure aluminum foil97% reflectivity100% water vapour barrier7 micron aluminum foil FunctionCan be installed ... , anti-radiation, anti-vibration, and shielding;4.Moisture barrier, sun-proof, waterproof, good sealing property, heat preservation ... , energy saving5.Summer: moisture barrier, sun-proof, heat insulation, saving energy consumed by ...