• versatile


  • safe


  • renewable


  • durable


  • real


What's New

Preserved Wood Infographic, Specification Guide now available


Get the latest information for specifying Western preserved sawn products under the AWPA Use Category system with a new infographic and a special PreserveSpec technical guide.

Both feature the up-to-date definitions from the 2016 AWPA Book of Standards and provide specific information to help select the right preserved wood product. The infographic, developed through the AWPA Education Task Group, shows the most common uses for preserved wood at homes. The PreserveSpec guide is the first in a new series of guides to assist those specifying preserved wood products for any project.

Download the new publications from our exclusive online Technical Library.

Read more


Awards program open for aquatic projects


Western Wood Preservers Institute is looking to celebrate the innovative uses of preservative-treated wood products in aquatic projects with the 2016 Preserved Wood in Aquatic Uses Awards program.

Eligible projects include docks, port facilities, piers, bridges and others where preserved wood is used in or around water. The top 10 qualified entries will receive a wooden model of the Lady Washington. Check out the submission requirements and download an entry form.

Read more


Calculate spans for preserved wood joists


Finding the proper span for preserved wood joists in decks and other structural applications is easy with the new Deck Joist Span Calculator. The Excel-based calculator determines spans for 2-inch Western preserved wood from 4 inches to 14 inches in width under common loads. It can also adjusts the spans for incised wood, as required in building codes. The calculator was created in cooperation with Western Wood Products Assn., which maintains span tables and other design information on Western lumber species.

Read more



SDSs available for preservatives

Safety data sheets, or SDSs, for wood preservatives can be downloaded or requested from the new Find SDS section. The new sheets, required by OSHA regulations, replace the Material Data Safety Sheets (MSDS) and must be provided to downstream users to communicate information on the hazards of the chemicals in the preservatives.

Read more


Corps removes treated wood ban

The U.S. Army Corps of Engineers has settled a lawsuit brought by the preserved wood industry and has agreed to allow the use of preserved wood over and near waters or wetlands.

Read more

Check us out on Facebook

Get the latest developments on preserved wood and the Western Wood Preservers Institute on our Facebook page. Be sure to like us to get our regular updates!

Read more

Click and learn


Everything you need to know about Western preserved wood is just a click away with the Preserved Wood Tech Library.

The online library offers an extensive collection of downloadable publications, technical sheets and design tools to properly select, specify and use Western preserved wood on almost any project.

Check out the online library!


Preserved Wood to go

There are many questions when it comes to selecting the right treated wood product. Have the answers right in your hand with the newly revised Treated Wood Guide app, available for free on your smartphone or tablet.

  • Available for Apple iOS and Google Android smartphones and tablets
  • Get detailed information on wood preservatives used today
  • Review national AWPA standards for treated wood and what products are suited for specific uses
  • Explore common questions about treated wood

Download it today!