Owens Corning develops, manufactures and markets insulation, roofing, and fiberglass composites. It operates in three segments: Composites, Insulation, and Roofing. The Composites segment manufactures, fabricates, and sells glass reinforcements in the form of fiber, and manufactures and sells glass fiber products in the form of fabrics, non-wovens, and other specialized products. The Insulation segment manufactures and sells fiberglass insulation into residential, commercial, industrial, and other markets for thermal and acoustical applications. The Roofing segment manufactures and sells residential roofing shingles, oxidized asphalt materials, and roofing components used in residential and commercial construction, and specialty applications, as well as synthetic packaging materials.