No, CertainTeed is not a Canadian company, it is an American company owned by a French multinational with Canadian operations and manufacturing. CertainTeed Corporation was founded in 1904 as General Roofing Manufacturing Company in East St. Louis, Illinois, USA, and is currently headquartered in Malvern, Pennsylvania, near Philadelphia. It has operated as a major US building materials manufacturer for over 120 years, producing roofing shingles, vinyl siding, insulation, drywall, and ceiling products. In 1988, CertainTeed was acquired by Saint-Gobain, which is headquartered in La Defense, Paris, France, founded in 1665 by Louis XIV, and is one of the world's largest building materials companies with over 47 billion euros in annual revenue. CertainTeed has a Canadian division, CertainTeed Canada, and sister brands under Saint-Gobain ownership including BP Building Products manufactured in LaSalle, Quebec, and Kaycan for siding, which operate Canadian plants, employ Canadians, and produce CSA-certified bilingual products for the Canadian market. However, ultimate corporate ownership and control is American and French, not Canadian. True Canadian-owned roofing manufacturers include IKO headquartered in Brampton, Ontario, whereas CertainTeed is an American company with Canadian presence similar to GAF and Owens Corning.
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