NAHB Research Center Grants First “Green Approved” Product Seals of Approval to iLevel by Weyerhaeuser

UPPER MARLBORO, Md., March 19, 2009—TheNAHB Research Centerintroduces its “Green Approved” product seal of approval, and recognizes structural frame products fromiLevel by Weyerhaeuserwith the first certificates under the new designation.  The mark is intended to provide third-party evidence that building products meet specific scoring criteria for homes seeking certification to the National Green Building Standard™ (the Standard), a consensus-developed standard that was recently approved by ANSI.

iLevel’s full range of engineered wood products and solid sawn lumber are now designated as NAHB Research Center Green Approved products.  These include TJI® joists, TimberStrand® laminated strand lumber (LSL), Parallam® parallel strand lumber (PSL), Microllam® laminated veneer lumber (LVL), iLevel Framer Series™ Lumber, iLevel Premium Joists™ and all other wood structural framing products.

TheGreen Approvedmark indicates third-party documentation and approval by the NAHB Research Center that a building product contributes to compliance of specific green practices for National Green Building Certification to the Standard.  Such products carry a certificate from the Research Center that identifies the specific sections of the National Green Building Standard under which the products can earn points. The Green Approved mark helps bridge the gap between manufacturers who make green products and builders and designers who want to use them. Green Approved products can be found from links on theGreen Scoring Toolatwww.nahbgreen.org.

“iLevel and Weyerhaeuser have long been committed to green building and operating our facilities and forests in environmentally responsible ways,” says Susan Swirsley, Director of Brand Marketing for iLevel.  “In addition to our products being certified to the Sustainable Forestry Initiative standard, the Green Approved product designation empowers builders to make an informed choice on products in their homes and simplifies the documentation process tremendously.”

About iLevel by Weyerhaeuser

iLevel is Weyerhaeuser’s integrated residential framing business providing seamless, unified building solutions.  By offering the most comprehensive and innovative collection of proven structural framing materials, technical support and software in the building industry, and the means to distribute them efficiently, iLevel is leading the structural frame market and helping builders and dealers succeed in today’s challenging business environment. www.ilevel.com.

About Weyerhaeuser

Weyerhaeuser Company, one of the world's largest forest products companies, was incorporated in 1900. In 2008, sales were $8 billion. It has offices or operations in 10 countries, with customers worldwide. Weyerhaeuser is principally engaged in the growing and harvesting of timber; the manufacture, distribution and sale of forest products; and real estate construction and development. Additional information about Weyerhaeuser's businesses, products and practices is available athttp://www.weyerhaeuser.com.

About The NAHB Research Center

TheNAHB Research Center, located in Upper Marlboro, Md., promotes innovation in housing technology to improve the quality, durability, affordability, and environmental performance of homes and home building products. Created 45 years ago as a subsidiary of the National Association of Home Builders (NAHB), the NAHB Research Center has established itself as the source for reliable, objective information and research on housing construction and development issues. Through its various testing and certification services, the Research Center seal is internationally-recognized as a mark of product quality and an assurance of product performance. Additional information about the Research Center is available atwww.nahbrc.org.