Western Wood Preservers Institute

The Western Wood Preservers Institute (WWPI) is a non profit trade association, headquartered in Vancouver, Washington, that has represented the interests of the preserved wood products industry in western North America for more than 75 years. WWPI members either manufacture treated wood products or are directly affiliated or provide a service to the preserved wood industry. The primary areas of activity for WWPI include regulatory and market outreach programs aimed at sustaining a viable western North American preserved wood industry. WWPI members produce pressure treated dimensional lumber and timbers, poles, posts, piling, utility poles and crossarms, and other specialty products. WWPI provides training to architects, specifiers, building code officials and others involved in the building construction industry. WWPI also provides training standards seminars to the electrical utility industry.