Founded in 1886, GAF is the largest roofing manufacturer in North America. The Company is an operating subsidiary of Standard Industries. GAF products include a comprehensive portfolio of roofing systems for residential and commercial properties, which are supported by an extensive national network of factory-certified contractors.
Owens Corning develops, manufactures and markets insulation, roofing, and fiberglass composites. The company’s market-leading businesses use their deep expertise in materials, manufacturing, and building science to develop products and systems that save energy and improve comfort in commercial and residential buildings.
