Everbilt Foil Tape helps keep your property warmer in Winter and cooler in Summer. Everbilt tape holds the insulation together for tighter fit so there are no gaps or holes during installation. Everbilt Insulation reflects thermal rays retaining heat or alternatively keeping living spaces cool. Everbilt Insulation provides an insulating barrier between interior and exterior environments protecting against Cold, Heat and UV Light and can be used in floors, walls and roofs in a variety of structures including finished attics, basements, Interior and exterior walls, garden buildings, recreational vehicles and pet homes. Fiber and irritant free, it is lightweight and flexible for easy installation.