Ontario Lumber Manufacturers Agency

The Ontario Lumber Manufacturers Agency is an independently owned, fully bilingual agency offering lumber grading and/or stamping services to our licensed facilities and individuals for the last 50 years.

We are an accredited agency of the Canadian Lumber Standards Accreditation Board (CLSAB) and the American Lumber Standard Committee, Inc. (ALSC), and a member of the National Lumber Grades Authority (NLGA) and Canadian Wood Council (CWC) and the Canadian Food Inspection Agency for the CHTWPCP (HT) program.

Trust in our Roots

Become a Valued Member

Members of the OLMA are a vital part of the province’s important lumber industry – and key contributors to local economies across northern and central Ontario.

Our Services

Maintain Product Efficiency
Mediate disputes between buyers and sellers of lumber products bearing the OLMA mark and others as requested.

Accreddited to Supervise
Visually graded lumber
Machine-graded lumber (MSR)
Finger joined lumber (FJ)
Heat Treated Wood (HT)

Training and Licensing
Train and license individuals at our licensed member mills to classify lumber in accordance with recognized grading rules.

Assurance of Quality Products and Stamping Authorize individual manufacturing facilities, to mark pieces of lumber with the OLMA facsimile stamp attesting to the quality of each piece, for market acceptance within North America and internationally, by conducting periodic surveillance audits with a system of lumber quality control.