... prevent damage from rain or moisture economy SpecificationsCharacteristics:No odor and to xicity, environmentally-friendly;Light, soft, dustfree, fire, ... , the middle layers are aluminum foil (honed side), and PE, and the bottom layer is woven fabric. Melted PE is ... 2.As the interlayer between floor and the ground to prevent moisture and heat;3.As an disposable and budget underlay insulation material ...