Single Side Foil Reflective Insulation Foam Core Radiant Barrier measures 40 in. x 80 in. (1m x 2m) with a 5mm (196mil) thickness, covering 21.63 sq. ft. Ideal for ceilings, walls, steel buildings, roofing, and more. Made from single-layer aluminum foil and closed-cell foam, it is lightweight, durable, non-toxic, non-carcinogenic, and waterproof. With a Class A fire rating, it ensures excellent fire resistance and safety. This insulation reduces heating and cooling costs by minimizing energy loss, keeping spaces warmer in winter and cooler in summer. It acts as a vapor barrier to prevent moisture infiltration and a sound barrier to reduce noise. Reflecting 95% of radiant energy, it enhances thermal performance. Suitable for indoor and outdoor use in barns, attics, garage doors, roofs, windows, and floors.Easy to install, it can be cut with scissors or a utility knife and secured using nails, glue, or spray adhesive, making it a practical choice for energy-efficient insulation.