CertainTeed Corporation

CertainTeed Corporation is a leading North American manufacturer of building materials including; asphalt, roofing, vinyl and fiber cement siding, fiber glass insulation, vinyl windows and patio doors, vinyl fence and railing, vinyl and composite decking, foundations, and pipe. More CertainTeed vinyl windows are installed in American homes than any other brand. The low “E” glass has the best U- and R-values of any double-glazed system available today, keeping homes cooler in summer, warmer in winter, and blocking 87% of UV rays. Many carry the energy star label. CertainTeed insulation products are Greenguard certified for low emissions and all plants are ISO 9001 and ISO 14001 certified.