... fire retardant, easy to install;3. Heat reflection, heat insulation, sound insulation, anti-radiation, anti-vibration and shielding;4. Moisture barrier, ... energy saving;5. Summer: moisture barrier, sun proof, heat insulation, saving energy consumed by cool air condition;6. Winter:heat ... R-value:3.5Pure aluminum thickness:7 micronFire rating: Class A / Class 1 Function:Can be installed on roof, wall or ...