Technical Library

Preserved Wood


The best resource for Western preserved wood products is just a click away with

The website offers key information about preservative-treated wood products to properly select, specify and use Western preserved wood. The Online Technical Library boasts an extensive collection of downloadable publications, technical sheets and design tools to guide using preserved wood on almost any project.

Check out today!

Technical Library

WWPI is the recognized source for information on fire retardant treated wood, offering a variety of publications detailing how to properly specify and use fire retardant wood products. To view or download a publication, click on the PDF icon. Please review the Disclaimer concerning this information.

Use the Quick Links on the left for fast access to publications by subject.


FR Sources of Supply Sources - Fire Retardant Treated Wood
Directory of Western fire retardant treated wood products manufacturers, with sales contact information and fire retardant treatments offered.
1 page, 08/17

Product Use

FR Stamps NEW! FireSpec - Code Compliant Fire Retardant-Treated Wood Labels
Details on code-required labels or stamps on interior use and exterior use fire retardant-treated lumber and plywood products.
1 page, 08/17

Building Codes

FRTW in Bldg Code NEW! FireSpec - Fire Retardant Wood and the 2015 International Building Code
Code references recognizing the use of fire retardant treated wood in construction in the 2015 International Building Code.
2 pages, 08/17

Fire Retardant Manufacturer Resources

Preservative companies that make fire retardant formulations provide many online resources to assist in specifying and using wood products treated with their fire retardants. Below are links for the specific fire retardant brands used by Western treaters.

Interior Fire Retardants

DBlaze D-Blaze
D-Blaze, manufactured by Viance LLC, is regularly used in multifamily and commercial structures, helping reduce construction and insurance costs.
Produced by Lonza Wood Protection, Dricon was introduced in 1981 and for decades has been used successfully in a variety of structures and projects.
FirePro FirePro
Using a proprietary formulation that contains no phosphates, FirePro from Koppers Performance Chemicals offers exceptional fire performance without compromising other engineering properties of the wood.

Exterior Fire Retardants

A natural extension of Lonza Wood Protection's fire retardant products, FRX is used in exterior applications where other materials would transfer hear or allow fire to spread, where sprinkler systems cannot be easily installed or where fire protection is inadequate or not readily available.