Builders FirstSource is one of the leading suppliers of structural building materials to home builders in the United States. The company manufactures prefabricated structural components, including floor and roof truss supports, stairs and wall panels, as well as interior and exterior doors and windows. It offers a range of building products that includes concrete blocks, cabinets, trim, stair rails, siding, countertops, paints, fireplaces and power tools to local markets. The company specializes in framing, insulation, sheathing, roofing, decking, customized millwork and molding services. Additionally, it provides construction, product design and development, manufacturing, installation and distribution services. The company s facility includes a window shop.