Is Owens Corning a Canadian company?

No, Owens Corning is not a Canadian company. Owens Corning is an American company headquartered in Toledo, Ohio, USA, where it has been based since its founding in 1938 as a joint venture between Owens-Illinois Glass Company and Corning Glass Works. It is a Fortune 500 company publicly traded on the New York Stock Exchange under ticker OC and is one of the world's largest manufacturers of fiberglass insulation, roofing shingles, and composite materials. While Owens Corning is American, it has significant operations in Canada and is often mistaken for Canadian because its PINK insulation and roofing shingles are widely sold across Canada through Home Depot, Lowe's, and building supply distributors, and it has Canadian manufacturing plants and offices. Owens Corning operates plants in Canada including facilities in Ontario and other provinces for insulation and roofing distribution, and employs many Canadians. It also has a Canadian subsidiary, Owens Corning Canada, which handles Canadian sales and compliance with Canadian building codes and bilingual labeling. However, its corporate ownership, headquarters, and primary incorporation are American, not Canadian. It is similar to other American building materials companies like GAF and CertainTeed that have large Canadian presence but remain US companies. So Owens Corning is an American multinational with Canadian operations, not a Canadian-owned company.