Owens-Corning Inc is a manufacturer of glass fiber utilized in composites and building materials. It has an integrated business model with four reportable segments: Composites, Insulation, Doors, and Roofing. It generates maximum revenue from the Roofing segment. Its Roofing segment laminate and strip asphalt roofing shingles, roofing components, synthetic packaging materials, and oxidized asphalt. It meets the growing demand for longer-lasting, aesthetically attractive laminate products with modest capital investment. Geographically the company generates the majority of its revenue from the United States.