This aluminum foil-based radiant barrier is comprised of a middle layer of a high strength woven fabric laminated to a 99.5% pure aluminum foil sheet layer to the top and bottom. Because the surface of aluminum forms a thin hard oxide layer, it naturally becomes very resistant to corrosion and therefore, no anticorrosive exterior is required; an advantage of using pure aluminum as a raw material. Ultima-FOIL® feels and behaves like basic aluminum foil however, it is highly reflective and tear-resistant.
