• versatile


  • safe


  • renewable


  • durable


  • real


What's New

Get education, CEU credits on preserved wood with new online course


Learn all about preserved wood, from pressure treating to properly specifying products, in a new accredited online course from WWPI. The course Preservative-Treated Wood: Specification and Use provides a detailed overview on preserved wood products.

Hosted by the online education service AEC Daily, the course qualifies for continuing education credits, or CEUs, from a host of associations, including the American Institute of Architects (AIA), Landscape Architecture Continuing Education (LA CES), National Assn. of Home Builders (NAHB) and the National Assn. of the Remodeling Industry (NARI). In all, there are 23 associations offering one hour of CEUs for taking the course.

To earn CEU credits, visitors must complete a 10-question test about preserved wood. There is no charge for taking the course.

Course sections include: How Wood is Preservative Treated, Specifying Using AWPA Use Categories, Best Management Practices for Aquatic Uses and Environmental Benefits of Preserved Wood. The full course can be downloaded as a PDF file, with links to the CEU test and other reference materials noted in the course.

The free online course is perfect for those who need to learn about preserved wood, from designers and specifiers to building material dealers. Go to the head of the class for preserved wood today!

Review the online course


Three projects earn awards for preserved wood use in aquatic applications


A waterfront park rehabilitation, a pier reconstruction and a port maintenance and expansion project have earned top honors in the 2017 Preserved Wood in Aquatic Uses Award program sponsored by WWPI.

Percival Landing in Olympia, Wash., Malibu Pier in California and the Santa Barbara, Calif. wharf and harbor were recognized for their innovative use of preservative-treated wood products in aquatic and environmentally sensitive areas. Each project utilized preserved wood products in recreational areas open to the public that were in or near water.

Entries are now being accepted for the 2018 Preserved Wood in Aquatic Uses Award. Projects must prominately feature preserved wood products in either structural or non-structural uses in or over an aquatic environment.

For entry applications and more information on the contest, go to the Project Contest section in the Uses/Aquatics page.

Review the 2018 winners


Online model guides preserved wood selection for aquatic uses


Determining any potential impacts from using preserved wood in aquatic or sensitive environments is now easier with a new, user-friendly Environmental Assessment Model.

The online model streamlines the process of modeling the conditions for a project to estimate the potential migration of preservatives from preserved wood immersed or over water. It is based on pioneering research by Dr. Kenneth Brooks and has been peer reviewed, repeatedly field tested and proven to protect the environment.

The model, which is also available as an Excel spreadsheet, has been used by the National Oceanic and Atmospheric Administration, U.S. Forest Service, Bureau of Land Management, U.S. Park Service, Environment Canada and Canadian Department of Fisheries & Oceans as well as a host of local and state regulatory bodies.

For more information on the model, go to the Aquatics section or review materials in the Online Technical Library.

See the model


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



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.

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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.

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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!

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Everything you need
for using preserved wood


The best resource for Western preserved wood products is just a click away with the Preserved Wood Tech Library.

The 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!

See the hottest new site
on fire retardant wood


Learn how wood is protected from fire through pressure treating with fire retardants in the new, full-featured website

Explore how fire retardant wood products are made and how they work to protect structures against fire. Discover the advantages of pressure treating vs. surface coatings and find out more about the interior and exterior fire retardant treatments used by Western manufacturers today.

Take a look at today!


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!