EcoFoil Single Bubble Foil Insulation is primarily used in pole barns, metal buildings, basement walls, crawl spaces, and storage units located in moderate climates. Single bubble insulation combines the heat-shielding properties of solid radiant barrier with a layer of polyethylene bubbles, which acts as a built-in air gap that reduces contact between temperatures on either side of the product. The layer of bubbles effectively combats the formation of frost and condensation that can occur when temperature differences are extreme on either side of the material. It's very thin (approximately 1/8" thick), lightweight, and installs easily with minimal equipment.