GAF Materials Corporation - Residential & Commercial Roofing Products.
Founded in 1886, GAF Materials Corporation has grown to be one of the largest building products companies in North America — as well as the largest commercial and residential roofing manufacturer (approaching $2 billion in sales).
CertainTeed is a leading U.S. manufacturer of low slope and steep slope roofing products for commercial, industrial, institutional, and residential roofing and waterproofing applications. CertainTeed has served the roofing industry for 100 years, establishing a solid reputation for quality, reliability, and technical innovation.
Owens Corning is a world leader in building materials systems and composite solutions. A Fortune 500 company for more than 50 years, Owens Corning produces insulation, roofing, siding, manufactured stone and asphalt products for residential and commercial markets. The company’s glass composite materials are used to enhance performance in transportation, electronic, telecommunications and consumer applications. With operations in 26 countries, Owens Corning is a leading innovator of glass fiber technology with sales of $6.3 billion in 2005 and 20,000 employees worldwide.