Reflective Single Bubble Foil Insulation Roll for blocking and reflecting Radiant 'heat gain or heat loss'. Premium quality high-performance foil insulation. Reflective Foil Insulation is a high-quality commercial grade of aluminum foil which consists of two highly reflective layers of metalized aluminum foil centred between a ‘double’ layer (5/16”) of bubble insulation. Helps reduce dampness and increase comfort. Excellent Vapor and Radiant Barrier. Unaffected by Moisture and Humidity. DIY Project, lightweight and easy to use. Tools required: measuring tape, utility knife or scissors. Material is Fiber free and environmentally safe. No special clothing or breathing respirator required.