Polynum Big: Thermal Reflective insulation 8.00mm thick consists of a polyethylene bubbles layer laminated with two aluminum reflective layers (95% to 97% reflectivity) for maximum radiant heat reflection (low radiant heat absorption) with a tested Emissivity of 0.03 to 0.05. Our anti-corrosion treatment is applied to all Polynum products for durable performance under all climate conditions including coastal areas, high humidity areas, livestock buildings. Polynum BIG Advantages: **** High Thermal resistance (R-value) **** Moisture-proof, fungus and mold-free **** High performance **** Does not attract nesting, rodents, birds, or pests. ****Does not collect dust, does not retain bacteria, odors nor dirt. **** Lightweight **** User-friendly No protective equipment such as gloves or breathing equipment is required for installation **** Hypoallergenic, non-crumbling material, no airborne microparticles, does not create respiratory problems. **** Eco Friendly Polynum Big Applications : Thermal insulation in industrialized roofs according to the existing construction Thermal insulation in tiled roofs combined with a dust barrier Thermal insulation in walls with two layers; gypsum finish, board cement, plasterboard, etc.