Founded in Calgary in 1951, family-owned IKO Industries is a vertically integrated global manufacturer of roofing and building-envelope products. Across more than 35 plants in North America and Europe, it makes products for residential and commercial roofing, insulation, and waterproofing; its history includes producing building paper before beginning shingle production in 1954.
TAMKO Building Products LLCFounded in 1944, TAMKO Building Products LLC manufactures residential roofing shingles and waterproofing products. Its name is an acronym for Texas, Arkansas, Missouri, Kansas and Oklahoma, the company’s original trade area; TAMKO says its trade area now covers all 50 states. The company is known for its Heritage and Proline shingle series and describes its roofing products as made at U.S. facilities using some globally sourced component materials.FREDERICK, MD
TarcoFounded in 1978, Tarco is one of North America's largest independently owned manufacturers of roofing and building-envelope products. The company has produced roofing underlayments for more than 45 years, including self-adhesive roofing materials, traditional roll roofing, and waterproofing products, and operates manufacturing plants in Pennsylvania, Arkansas, and Texas.GREENCASTLE, PA
Owens CorningOwens Corning is a branded building-products manufacturer whose businesses include roofing, insulation, and doors, with products serving residential, commercial, and industrial markets. The company identifies Toledo, Ohio, as its world headquarters and says it operates globally, with manufacturing facilities across North America, Europe, Asia Pacific, and the Americas.TOLEDO, OH
Repp Industries Roofing LtdFounded by Pat Peters in 1995 with one employee and one truck, Repp Industries Roofing Ltd. now repairs, maintains and installs roofs for homes, commercial buildings and agricultural properties across the Fraser Valley. The Abbotsford company manufactures its custom metal roofing products in-house, including panels and flashings cut to fit each project. It is also known for giving customers an honest assessment when a roof needs repair rather than replacement, backed by more than 25 years of experience.