Owens-Corning Inc is a manufacturer of glass fiber utilized in composites and building materials. It has an integrated business model with three reportable segments: Composites, Insulation and Roofing. Its insulation products conserve energy and improve acoustics, fire resistance and air quality in the spaces where people live, work and play. Its roofing products and systems enhance the curb appeal of people's homes and protect homes and commercial buildings alike. Its fiberglass composites make thousands of products lighter, stronger, and more durable.