The Pacific Lumber Inspection Bureau (PLIB) is a private, non-profit 501 c(6) member-based quality control inspection agency. Organized in 1903, we offer Lumber Inspection and Grade Stamping services as well as certification for Heat-Treated (HT) lumber, ISPM 15 Wood Packaging, Glulam, Cross-Laminated Timber (CLT), Wood Trusses, CE Marking, and WUI registration services, to over 450 softwood lumber manufacturers and re-manufacturers, drying facilities, glulam, truss, CLT manufacturing facilities and wood packaging facilities in Europe and North America.

The Bureau is headquartered in Federal Way, WA, with a Canadian division office in Vancouver, BC. Field offices are located in Washington, Oregon, California, Montana, British Columbia, Germany, and Latvia. We operate in the Western and Southern U.S., Canada, and Continental Europe.

In 2019 PLIB merged operations with West Coast Lumber Inspection Bureau (WCLIB) and WCLIB’s partner organization, the American Institute of Timber Construction (AITC), extending PLIB membership to all former WCLIB and AITC members, while also retaining all WCLIB and AITC trademarks and programs.

PLIB is accredited in North America by both the American Lumber Standard Committee (ALSC) and the Canadian Lumber Standard Accreditation Board (CLSAB). In addition to being approved for all Canadian and Western U.S. lumber grading rules, we also publish our own Standard No. 18 Grading Rules for West Coast Lumber and the Export R List Grading and Dressing Rules for export lumber products.

In 2021, PLIB member mills produced over 8 billion board feet of softwood lumber for the North American market and over 20 million board feet of glulam products. In addition, PLIB’s wood packaging subscribers produced millions of IPPC-marked wood-packaging items. The fact that all of these items were shipped to markets around the world is a testament to the fact that the PLIB, WCLIB, and AITC trademarks are recognized worldwide as a mark of quality and conformity.