Advanced Building Products Inc. (http://www.advancedflashing.com)

 AECDaily (http://AECdaily.com)

 Asphalt Roofing Manufacturers Association (ARMA) (http://www.asphaltroofing.org)

 Builder Magazine (http://www.builderonline.com)

 Building Science Corporation (http://www.buildingscience.com)

 Cabot (http://www.cabotstain.com)

 Cedar Shake and Shingle Bureau (http://www.cedarbureau.org)

 CertainTeed Siding (http://siding.certainteed.com/cside/index.html)

 Crane Plastics (http://www.craneplastics.com)

 Energy & Environmental Building Association (http://www.eeba.org)

 Foard Panel Inc. (http://www.foardpanel.com)

 Home BUILDER Magazine (http://www.homebuildercanada.com)

 Home By Design (http://homebydesignshowhouse.com)

 Huttig Building Products (http://www.huttig.com)

 Katz Roadshow (http://www.KatzRoadshow.com)

 Longfellow's Cedar Shingles (http://www.longfellowscedarshingles.com)

 Louisiana-Pacific Corporation (http://www.lpcorp.com)

 Maibec Cedar (http://www.maibec.com)

 MP Global Products (http://www.mpglobalproducts.com)

 NAHB Research Center (http://www.nahb.org)

 North American Wholesale Lumber Association (http://www.nawla.org)

 Northwest Wall and Ceiling Bureau (http://www.nwcb.org)

 Oikos Green Building Source (http://www.oikos.com)

 Olympic Stains (http://www.olympic.com)

 Partnership for Advancing Technology in Housing (PATH) (http://www.pathnet.org)

 Pennsylvania Housing Research Center (http://www.engr.psu.edu/phrc)

 Remodeling Magazine (http://www.remodelingmagazine.com)

 Sweets Catalog (http://www.sweets.com)

 Tamko Roofing Products (http://www.tamko.com)

 Tamlyn & Sons (http://www.tamlyn.com)

 Typar (http://www.typarhousewrap.com)

 United States Green Building Council (http://www.usgbc.org)

 Waska Cedar (http://www.waska.nb.ca)

 Western Red Cedar Lumber Association (http://www.wrcla.org)

 Western States Roofing Contractor Association (http://www.wsrca.com)

 Wood Roofing Supplies Online (http://www.woodroof.com)