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This is a radiant barrier roll: aluminum foil on both faces around a 2 mm polyethylene bubble core, with perforations on the surface. It reflects radiant heat rather than adding bulk R-value, so it works best as a supplement in garages, attics, sheds, RVs and behind windows. The 59 in by 8.2 ft sheet cuts with scissors and is held with tape or adhesive. Compared with foam board or fiberglass, it is thin, light and easy to fit into odd spaces, but it does not replace mass insulation.
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This is a double-sided reflective insulation roll measuring 59 inches by 8.2 feet. It is made of high-quality aluminum film on both sides of a 2mm polyethylene air bubble cushion. A round-hole pattern on the surface increases reflectivity.
The sheet reduces the transmission of heat and sound. It blocks heat in summer and cold air in winter when used on roofs or windows. On walls, ceilings and floors it also insulates against sound. The surface resists scratches.
It suits windows, RVs, garages, attics, sheds, greenhouses and cars. You can cut it to any shape or size. Hold it in place with double-sided tape, self-adhesive pads or glue.
