Please visit the following helpful industry links:

The Engineered Wood Association
  
www.apawood.org
American Wood Preservers' Association
   www.awpa.com
The Canadian Wood Council
   www.cwc.ca
National Lumber Grades Authority
   www.nlga.org
Western Wood Products Association
   www.wwpa.org
Southern Pine Inspection Bureau
   www.spib.org
Timber Products Inspection, Inc.
   www.tpinspection.com
Wood Products Certification & Testing
   www.tecotested.com
Ontario Lumber Manufacturer's Association
   www.olma.ca
House Wrap
   www.tyvek.com
Simpson Metal Products
   www.strongtie.com
Fiber Cement Siding
   www.jameshardie.com
Exterior Trim
   www.miratectrim.com
Dens Glass Gold
   www.gp.com/gypsum
Gypsum Sheathing
   www.gypsumsolutions.com
LVL & PSL
   www.weyerhaeser.com/ourbusiness/buildingproducts/classicglulam
Fire Treated Lumber & KDAT Lumber
   www.greatsouthernwood.com/products