Welcome to the Western Wood Preservers Institute website. Since 1947, WWPI has represented the interests of the preserved wood products industry throughout western North America. The membership consists of companies that either manufacture products, are directly affiliated or provide a service to the preserved wood industry.
Our site includes information on all services WWPI delivers to its members and those specifying and using preserved wood products. You can also review the Institute's current membership and links to other sites in the wood preserving industry.
Information on preserved wood products, including our Technical Library and digital specification tools, is now available on our sister website PreservedWood.org.
Learn more about fire-retardant-treated wood products at FireResistantWood.org. Explore key information on treated wood utility poles at WoodPoles.org.
For those in the state of California, you can get guidance on disposing of Treated Wood Waste (TWW) on our newest website TWWDisposal.org.
If you have any questions or suggestions on how we can further improve this site, please use the Contact Us form and send us your comments.