PLIB is accredited by International Accreditation Service, Inc. (IAS) as an ISO 17020 third-party inspection agency for metal plate connected wood trusses (view certificate) as required by PRG 320-2019: Standard for Performance rated Cross-Laminated Timber. IAS is a nonprofit, public-benefit corporation and a subsidiary of the International Code Council (ICC), the governing body that develops the International Building Code (IBC).

Certification for U.S. market production involves plant pre-qualification as well as testing for mechanical properties and adhesive testing which must be conducted by an approved testing agency. Certified producers must establish quality control procedures and submit to periodic, unannounced plant inspections and quality assurance audits.

For further information, please read PRG 320.