Maritime Lumber Bureau

The Maritime Lumber Bureau (MLB) is a non-profit organization, CLSAB-accredited lumber grading agency, industry association representing most of the companies that manufacture lumber in Atlantic Canada.  MLB is authorized to apply specified standards by the Canadian Lumber Standards Accreditation Board, the American Lumber Standards Committee Inc., the British Standards Institute, and the Japanese Ministry of Construction. The more than 100 sawmills from Nova Scotia, New Brunswick, Prince Edward Island, Newfoundland, and the State of Maine that have taken out voluntary membership are required to adhere to published standards. S-P-F (Spruce-Pine-Fir) and Eastern White Pine are the primary species grown and manufactured under the authority of the MLB.

P.O. Box 459
Amherst, NS B4H 4A1
Tel: 902-667-3889
Web: www.mlb.ca

On May 24, 1960 the CLS Committee approved MLB as having the necessary organization, supervisory staff and trained graders to grade mark lumber to meet the United States Federal Housing Authority requirements.

  1. CLSAB has accredited MLB 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 Structural Lumber (SPS 1 – March 2023)
    4. CE Marking
      1. in accordance with the MPA-CLSAB Agreement (October 17, 2022)

  2. CLSAB has accredited MLB 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)