News Release CertainTeed Appointments –Page 3 of 3

For immediate release:

September 6, 2011

CertainTeed Announces New Leadership in Roofing, Siding Businesses

(Valley Forge, Pa.) – CertainTeed Corporation is pleased to announce the appointment of Tom Smith as president of CertainTeed Roofing and Mark Rayfield as president of the Company’s Siding Products Group, effective September 1, 2011.

“Tom and Mark have remarkable track records at CertainTeed and its parent company, Saint-Gobain, respectively, bringing decades of expertise and proven leadership in effective management, innovation and sustainability,” says John Crowe, president of CertainTeed. “They will play an integral role in ensuring that CertainTeed is at the forefront of next generation building products and construction practices.”

In his new role, Smith is responsible for residential and commercial roofing as well as CertainTeed’s burgeoning solar business. Smith joined CertainTeed in 1999 as vice president of CertainTeed Commercial Roofing. In 2005, he joined the Siding Products Group as vice president and general manager and was promoted to president in October 2005. Prior to joining CertainTeed, he held a variety of positions in general business and operations management with American Sunny Foods, Pacific Rice Products, Kaiser Aluminum & Chemicals and G.S. Roofing. Smith holds a B.S in Chemical Engineering from the University of California-Davis. He is preceded by Guillaume Texier, who recently accepted the position as president of Saint-Gobain’s global ceramics group.

Rayfield previously served as vice president and general manager for Saint-Gobain Abrasives in North America and vice president for Superabrasives Worldwide. In his new role, Rayfield will oversee the company’s vinyl, fiber cement and polymer shake siding, fence, railing, deck and cellular PVC trim product lines. Rayfield joined Saint-Gobain Abrasives as director of sales in 1999 and was later promoted to positions as vice president of distribution markets and sales and marketing, respectively. He has also served as vice president of sales for Piab USA, Inc. Rayfield studied at Clarkson University, where he earned a B.S. in Industrial Distribution and completed the Tuck Executive Program at Dartmouth College.

About CertainTeed

Through the responsible development of innovative and sustainable building products, CertainTeed, headquartered in Valley Forge, Pa., has helped shape the building products industry for more than 100 years. Founded in 1904 as General Roofing Manufacturing Company, the firm's slogan "Quality Made Certain, Satisfaction Guaranteed," quickly inspired the name CertainTeed. Today, CertainTeed® is North America’s leading brand of exterior and interior building products, including roofing, siding, fence, decking, railing, trim, foundations, pipe, insulation, gypsum, ceilings and access covers.

A subsidiary of Saint-Gobain, the world’s largest building products company, CertainTeed and its affiliates have more than 6,000 employees and more than 65 manufacturing facilities throughout the United States and Canada. Recognized as a 2009 and 2010 ENERGY STAR Partner of the Year by the U.S. Environmental Protection Agency, CertainTeed earned the 2011 ENERGY STAR Sustained Excellence Award, the highest level of recognition for outstanding contributions to protecting the environment through energy efficiency. The group had total sales of approximately $3 billion in 2010. www.certainteed.com

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