News Release QuietRock ES –Page 2 of 3

For immediate release:

March 9, 2010

CertainTeed Gypsum Introduces QuietRock® ES with EZ SnapTM, Bringing Cost-Effective, User-Friendly Soundproof Gypsum Board to the Canadian Market

(Mississauga, ON.) – CertainTeed Gypsum is strengthening its product offering in the Canadian market through the introduction of QuietRock® ES soundproof gypsum board with EZ-SNAP™ Technology — the most cost-effective, sound-reducing Type X gypsum board on the market today.

Using new gypsum core technology and a patent-pending manufacturing process that eliminates the extra layer of paper in its core, the board is easier to score and snap than other brands of soundproof drywall, helping boost productivity and lowering installed costs. QuietRock ES is designed for use by professionals and consumers in commercial and residential projects where enhanced acoustical performance is preferred or required. The boards are 5/8-inch thick, Type X fire rated and are designed to install and hang like standard drywall. Manufactured by Serious Materials, QuietRock ES is exclusively available through CertainTeed Gypsum in the Canadian market.

“In growing our portfolio of high-performance products, CertainTeed Gypsum is strategically positioned to meet the evolving needs of the Canadian building industry,” says Graham Thayer, general manager of CertainTeed Gypsum Canada. “The acoustical properties, user-friendly design and affordability of QuietRock ES complement and enhance our existing product offering.”

QuietRock ES delivers acoustical ratings of Sound Transmission Class (STC) 52 when placed on both sides of single wood stud walls. This compares to an STC rating of 39 in a wall assembly using traditional gypsum board materials. QuietRock ES delivers ratings from STC 52-55 on single steel stud construction. This new offering from CertainTeed complements the existing family of QuietRock products which are available with ratings up to STC 80.

“The exceptional acoustical properties of QuietRock ES translate into the use of fewer boards to achieve optimal acoustic performance,” adds Thayer. “Ultimately, this reduces waste and the overall environmental footprint of a construction project.”

With over 80 years of design and manufacturing experience in Canada, CertainTeed Gypsum is the market leader for providing innovative gypsum board and finishing products for interior and exterior applications. Backed by cutting edge service and support from CertainTeed, Canadian building professionals can “Be Certain” about partnering with a company that provides time-tested, innovative products designed with a commitment to sustainability from beginning to end.

For more information, visit www.certainteed.com/gypsum.

About CertainTeed

Through the responsible development of innovative and sustainable building products, CertainTeed 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, windows, 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. In 2009 and 2010 CertainTeed, which is headquartered in Valley Forge, Pa., was named ENERGY STAR Partner of the Year by the U.S. Environmental Protection Agency, a national award that recognizes environmentally responsible corporations. The group had total sales of approximately $3 billion in 2009. www.certainteed.com

About Serious Materials

Serious Materials develops and manufactures sustainable green building materials that save energy, save money, improve comfort, and aggressively address climate change. QuietRock® soundproof drywall reduces material use, enhances livability, and supports dense urban construction. Super-insulating high R-value SeriousWindows™ reduce heating and cooling energy costs by up to 40 percent. SeriousGlass™ industry-leading insulating commercial glass has been installed in thousands of projects and offers the highest energy savings in the industry. EcoRock™ is the only true green alternative to gypsum drywall. Serious Materials’ products are manufactured in the company’s five factories across North America. www.SeriousMaterials.com

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