TIMBER PRODUCTS Engineered Wood Products

For over 45 years, Timber Products Inspection (TP) has been a leader providing quality third party auditing services to the lumber industry.  We know this industry and what it takes for manufacturers to be successful and provide a product that meets the current building codes.   Our professional staff has the expertise to work with you, answer your questions, and guide you thru the process. 

Below are some of the products TP is currently accredited to Inspect:

  • Cross Laminated Timber (CLT)
  • Glulam Beams
  • I-Joists
  • Nail Laminated Beams (Mechanically Laminated Wood Assemblies)
  • Trusses - Cold Formed Steel
  • Trussed - Metal Plate Connected Wood
  • Wall Panels - Wood

Accredited by the International Accreditation Service, Inc., a subsidiary of the International Code Council, our quality control programs are recognized by code officials in the US as well as other countries.



CLT is a product that is made by layering up alternating layers of dimensional lumber perpendicular to each other, resulting in a panel that has high strength, stability and rigidity properties. CLT has long been used in Europe and now is a growing market in the US. TP is accredited to audit CLT manufacturers by The International Accreditation Service (IAS) as a Type A inspection body under ISO 17020.


TP also audits the quality of GluLam beam manufacturers. Similar to finger jointed lumber production, GluLam production requires daily quality control by the plant to test the shear strength of the face bonds, the tensile strength of the finger joints, and the glue bondline durability, in addition to other attributes that require ongoing testing as well. TP now has seven DSA Certified Glulam Inspectors approved by the Division of the State Architect (DSA) for the state of California.


Give us a call today, and let TP monitor the quality system for any product you manufacture!

For More Information Please Contact:

David Jones, PhD
Director of Treated Wood & Laboratories

Product Standard Compliance Reports (PSCR)