Owens Corning is engaged in composite and building materials systems, delivering a range of products and services. The Company's products range from glass fiber used to reinforce composite materials for transportation, electronics, marine, infrastructure, wind-energy and other markets to insulation and roofing for residential, commercial and industrial applications. The Company operates in two segments: Composites and Building Materials. The Composites segment includes the Company's reinforcements and downstream businesses. The Building Materials segment includes the Company's insulation and roofing businesses. In June 2013, the Company announced that it has completed its buyout of Thermafiber Inc.