• versatile


  • safe


  • renewable


  • durable


  • real


What's New

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 wood 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


Review new Cal treated wood disposal bill now before state legislature

A fact sheet is now available detailing a new bill before the California legislature that will maintain regulations for treate wood waste (TWW) disposal. The two-page fact sheet reviews Senate Bill 68, which will maintain the requirements in place since 2004.

Current law allows TWW to be disposed in composite lined landfills and not be considered hazardous waste. It also requires wholesale and retail operations to post signs directing consumers to employ safe handling and lawful disposal practices. Click here to download the sign.

WWPI is supporting the new bill. Working with other industry associations, WWPI is hoping to make the regulation permanent by removing the sunset provisions that were in previous bills.

>> Download the fact sheet


Class it up and get CEUs with new Preserved Wood eUniversity


Get schooled on preserved wood and fire retardant wood with the new online eUniversity developed by WWPI and online education service AEC Daily.

Two courses are available in the eUniversity and each allow visitors to earn continuing education credits (CEUs) for taking the courses. CEUs are available from more than 20 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).

The course Preservative-Treated Wood: Specification and Use provides 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. The full course can be downloaded as a PDF file, with links to the CEU test and other reference materials noted in the course.

Protecting wood from fire is to subject of the second course, Specifying and Using Fire-Retardant-Treated Wood. Topics include a history of fire retardant wood and how those products are used in construction today. It explains how fire retardants work to protect wood, the applications and types of fire retardants that are available and the factors that should be considered to ensure FR wood products are properly specified for code compliance.

The online courses provide a detailed understanding of how preservative-treated and fire-retardant-treated wood products are made and used today. They offer an extensive foundation of knowledge for contractors, designers and specifiers, as well as for those selling treated wood products.

>> Review the new Preserved Wood eUniversity


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.

>> 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

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!