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Business Details
50+ Years
experience
Trusted Lumber Inspection & Certification Services
Founded in 1903, Pacific Lumber Inspection Bureau (PLIB) has established itself as a trusted leader in lumber and wood product inspection and certification. Our expertise spans over a century of delivering rigorous quality control, grading, and grade-stamping services to the lumber industry, alongside specialized certifications for wood products such as CE Marking, Heat Treatment, and Cross-Laminated Timber. In 2019, we expanded our capabilities through a strategic merger with the West Coast Lumber Inspection Bureau (WCLIB) and the American Institute of Timber Construction (AITC), enhancing our service offerings and geographic reach.

Headquartered in Federal Way, Washington, we operate across North America and Europe, providing unmatched inspection and certification services backed by accreditations from the American Lumber Standards Committee (ALSC), Canadian Lumber Standards Accreditation Board (CLSAB), and International Accreditation Service (IAS). Our commitment to protecting the interests of all stakeholders is rooted in our founding principle of fairness and diligence, ensuring transparency and reliability in every project we undertake.
Services
Lumber Grading CE Marking Certification Heat Treatment Services Wood Packaging Inspection Glulam Certification Cross-Laminated Timber Inspection Wildland Urban Interface (WUI) Compliance MSR Lumber Certification
Details
  • Year established: 1903
Highlights and features
  • We offer over 120 years of experience in lumber and wood product inspection.
  • Our services are accredited by ALSC, CLSAB, and IAS for global compliance.
  • We operate across North America and Europe with a focus on sustainability.
  • Our team maintains rigorous quality-control standards for CE Marking and Heat Treatment.
  • We merged with WCLIB and AITC to expand expertise in structural glued laminated timber.
Associations and certifications
  • American Lumber Standards Committee (ALSC)
  • Canadian Lumber Standards Accreditation Board (CLSAB)
  • International Accreditation Service (IAS)
Services
Lumber Grading
Our lumber grading services ensure compliance with North American and international standards through precise evaluation of wood quality, strength, and durability. We provide grade-stamping certifications for structural and export-grade lumber, supporting manufacturers in meeting regulatory requirements and market demands.
CE Marking Certification
CE Marking certification guarantees that wood products meet European Union safety and environmental regulations. Our team conducts rigorous assessments for structural timber, ensuring manufacturers achieve market access while maintaining adherence to EU directives for construction materials.
Heat Treatment Services
Heat treatment services ensure wood packaging materials comply with ISPM 15 phytosanitary standards. We provide certification for international shipments, preventing pest infestations and facilitating smooth customs clearance through globally recognized HT compliance protocols.
Glulam Certification
Glulam certification verifies the structural integrity and quality of glued laminated timber products. Our program, inherited from AITC, establishes manufacturing standards and ongoing quality control to ensure safety, durability, and compliance with building codes for commercial and residential applications.
Cross-Laminated Timber Inspection
Cross-laminated timber (CLT) inspection ensures engineered wood panels meet performance and safety standards for modern construction. We conduct quality assessments for CLT manufacturers, focusing on dimensional accuracy, bonding strength, and fire resistance to support sustainable high-rise and infrastructure projects.
Questions
What services does PLIB offer?
PLIB provides lumber grading, CE Marking, Heat Treatment, Glulam certification, and Cross-Laminated Timber inspection services for global markets.
Which regions does PLIB serve?
PLIB operates across the United States, Canada, and Europe, supporting lumber producers and manufacturers in these regions.
What accreditations does PLIB hold?
PLIB is accredited by the American Lumber Standards Committee (ALSC), Canadian Lumber Standards Accreditation Board (CLSAB), and International Accreditation Service (IAS).
How does PLIB ensure quality control?
PLIB maintains quality through rigorous inspections, adherence to international standards, and continuous monitoring of manufacturing processes for certified products.
What is PLIB's history?
Founded in 1903, PLIB merged with WCLIB and AITC in 2019 to expand its expertise in structural timber and global certification services.