Lafarge North America works to be the foundation of buildings, roads, and bridges across US and Canada. As North America's largest diversified supplier of building materials, the company operates 900 locations, which include about 400 industrial and distribution sites in more than 40 US states and in Canada through Lafarge Canada. Lafarge North America's products include asphalt, aggregates, gypsum wallboard, ready-mixed concrete, and concrete pipes and blocks. The company's products are used to build commercial, residential, transportation, public, and utilities projects. Lafarge North America is part of France-based global building conglomerate Lafarge Group and accounts for about 20% of its parent's sales.