Owens Corning manufactures and markets insulation, roofing, and fiberglass composite materials in the United States, Canada, Europe, the Asia Pacific, and internationally. It operates in three segments: Composites, Insulation, and Roofing. The Composites segment manufactures, fabricates, and sells glass reinforcements in the form of fiber; and glass fiber products in the form of fabrics, non-wovens, and other specialized products.