• versatile


  • safe


  • renewable


  • durable


  • real


What's New

Preserved Wood Infographic, Specification Guide offer tips for use


Get the latest information for specifying Western preserved wood products under the AWPA Use Category system with an easy-to-understand infographic and a detailed PreserveSpec technical guide.

Both feature the up-to-date descriptions of Use Categories from the AWPA Book of Standards and provide specific information to help select the right preserved wood product. The infographic shows the most common uses for preserved wood at homes, including treated decking, posts, timbers, plywood and other wood products. Review the common preservatives available for Western species, as well as the recommended use category for typical construction applications. The PreserveSpec guide is one of a 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


Got free time? Head to Wood That Lasts eUniversity campus


While schools are adjusting to a "new normal," the online campus of the Wood That Lasts eUniversity is in session for those who need to learn about preservative- and fire-retardant-treated wood products.

Featuring self-directed and narrated courses, the Wood That Lasts eUniversity is offered in cooperation with AEC Daily, an online education service that offers contining education to architects, designers, specifiers, contractors and building product distributors. To view or download the Wood That Lasts courses, visitors must complete a free registration, which allows you to receive Continuing Education Units (CEUs) when to complete a course.

Unlike other schools, the campus is open 24/7 and the textbooks are available at no charge. The curriculm includes two courses:

  • Preservative-Treated Wood: Specification and Use offers a detailed overview on preserved wood products. Sections include how wood is preservative treated, specifying using AWPA Use Categories, Best Management Practices for aquatic uses and the environmental benefits of preserved wood.

  • Specifying and Using Fire-Retardant-Treated Wood reviews how wood is protected from fire by pressure treating retardants into the wood fiber. Topics include a history of fire retardant wood, how those products are used in construction and how fire retardants work.

Each course allows visitors to earn continuing education credits (CEUs). CEUs are available from more than 25 associations, including 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). You must complete the free registration with AEC Daily to download the courses and earn CEUs.

>> Review the Wood That Lasts eUniversity


Presentation tells why preserved wood is great for trails, outdoor uses


Hear the story of preserved wood and the many advantages in using it in trails and other outdoor structures in a new video.

WWPI Sr. Program Manager Butch Bernhardt was invited to present an 18-minute talk without notes at the 2019 International Trails Symposium in Syracuse, New York. Bernhardt told trails managers and builders about the history of pressure-treated lumber and dispelled the many myths about preserved wood products.

"Despite its wide use, treated wood is often dismissed for being 'too' – too primitive, too much maintenance or too dangerous to the environment," said Bernhardt. "However, the real story of preserved wood today is far different than these perceptions."

Watch the video on the WWPI YouTube channel. The presentation was part of the new TRAILSNext speaker series by American Trails, a national non-profit organization representing the trail industry. The association professionally recorded all of the presentations and is making them available to their members.

>> View the video


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 2018 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


Online model guides preserved wood selection for aquatic applications


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 preservative-treated 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


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

Library has all you need
to specify 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!