Radiant GUARD® "Premium" radiant barrier is a two-sided reflecting 99.5% pure aluminum foil with a poly fabric center for durability. "Premium" radiant barrier perforated for breathability and is designed for new and retrofit installation applications where stapling is required. RadiantGUARD® radiant barrier reflective foil insulation products can reduce attic temperatures by up to 30 degrees when installed to the underside of roof rafters. Lowering attic temperatures provides a significant benefit by reducing air conditional loads and energy usage. Attic insulation radiant barriers can also: --Reduce heat transfer from attic to living spaces by up to 50%, --Extend the life of air conditioning units, and --Increase the comfort level of a home. Our radiant barrier products are clean, lightweight and non-toxic; are unaffected by changes in humidity, do not shrink, and once installed require no maintenance.