... over 80% external heat,protect wall building heat insulation material for roof Product Description: 1, This is a new ... over 80% external heat from buildings, protect wall, resist thermal shock and suddencold, etc. Characteristics:No odor and toxicity, ... , fire retardant, easy to install;Heat reflection, heat insulation, sound insulation, anti-radiation, anti-vibration, and shielding;Moisture barrier, ...