Since 1977, Owens Corning has been a leading manufacturer of shingles and accessories for the residential roofing market. Since Owens Corning invented glass fiber during the 1970s, it has become the material standard for shingles, and is used by most shingle manufacturers. The fiberglass composition of roof shingles plays an important role in protecting homes from moisture and other weather-related elements. Every shingle we make combines consistent quality with long-lasting beauty and maximum protection. Performance is at the heart of every Owens Corning roofing product.