OFIA Home of CLA Grading and Inspection

The Ontario Forest Industries Association is a non-profit organization, CLSAB-accredited lumber grading agency, that provides leadership to companies involved in the manufacture, sale and distribution of Canadian wood products. Services include developing quality business opportunities, providing valuable and practical grading services, and running education programs.

8 King St. East, Suite 1704
Toronto, ON M5C 1B5
Tel: 416-368-6188
Web: www.ofia.com


The December 18, 2009 Accreditation Agreement with OFIA recognizes them to supervise and grade stamp for each of the following classes of accreditation:

  1. CLSAB has accredited OFIA to supervise and grade stamp for each of the following classes of accreditation in accordance with CSA-O141 and ISO/IEC-17065:
      1. Visually Graded Lumber
        1. in accordance with CSA-O141 (May 23, 2023), CLSAB Regulations (October 23, 2024) and the NLGA Standard Grading Rules for Canadian Lumber (2025)
      2. Agency Certified Lumber
        1. in accordance with CSA-O141 (May 23, 2023), CLSAB Regulations (October 23, 2024) and the NLGA Standard Grading Rules for Canadian Lumber (2025)
      3. Fingerjoined Lumber
        1. in accordance with NLGA Special Products Standard for Fingerjoined “Vertical Stud Use Only” Lumber (SPS 3 – March 2023)
      4. Machine-Graded Lumber (MSR/MEL)
        1. in accordance with NLGA Special Products Standard for Machine Graded Lumber (SPS 2 – February 2024).
      5. CE Marking
        1. in accordance with the MPA-CLSAB Agreement (October 17, 2022)
  1. CLSAB has accredited OFIA to supervise and mark for the following class of accreditation in accordance with CSA-O141 and the CFIA-CLSAB Agreement:
    1. Canadian Heat Treated Wood Products Certification Program
      1. in accordance with the CFIA-CLSAB Agreement (October 31, 2014)