About Cornerstone Building Brands (Mastic siding):

Cornerstone Building Brands is the largest manufacturer of exterior building products for residential and low-rise non-residential buildings in North America. Headquartered in Cary, North Carolina, the organization serves residential and commercial customers across new construction and repair and remodel markets. As the No.1 manufacturer of vinyl windows (Ply Gem, Silver Line, Simonton, Atrium, American Craftsman, Great Lakes), vinyl siding (Mastic, Variform, Ply Gem Performance Collection), stone (Canyon Stone, Environmental Stoneworks and Ply Gem Stone) insulated metal panels (CENTRIA and Metl-Span), metal roofing (MBCI, American Building Components, Metl-Span, Metal Depots), metal wall systems (Star Building Systems, Ceco Building Systems, Metallic Building Systems, A&S Building Systems, Mesco Building Systems, Heritage Building Systems, Robertson Building Systems), and metal accessories (Metl-span, Centria, MBCI, American Building Components, Metal Depots), Cornerstone Building Brands combines a comprehensive portfolio of products with an expansive national footprint that includes approximately 20,500 employees at manufacturing, distribution and office locations throughout North America.

Siding & Accessories

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