Westlake Royal Building Products
Wholesale Building MaterialsOntario, Canada1001-5000 Employees
Westlake Royal Building Products is a wholesale building materials manufacturer and supplier headquartered at 91 Royal Group Crescent in Woodbridge, Ontario, Canada. It serves builders, remodelers, dealers and suppliers with materials and solutions for designing, building and remodeling, including siding, trim and mouldings, roofing, stone and windows. The company describes itself as a leading North American manufacturer with a portfolio of brands and products that support exterior and interior spaces. It employs between 1,001 and 5,000 people and is part of Westlake, a company listed on the New York Stock Exchange under ticker WLK. In 2026, the firm announced multiple product updates across its lines, including Vertälla accent panels for Royal and Exterior Portfolio siding, a 9-inch vinyl Board & Batten profile, new colors for Newpoint Concrete Roof Tile, and additional profiles such as TruExterior lap siding and Celect V-Groove.