Grade Stamps Not Recognized by NBC
Memo to Building SCOs: The Canadian Lumber Standards Accreditation Board (CLSAB) recently alerted building officials to 2 grade stamps that are not recognized by the National Building Code of Canada.
Stamp #1
 | Stamp #1 (Left) was recently observed in Quebec. |
This grade stamp is from an agency accredited by the Canadian Lumber Standards Accreditation Board (CLSAB), however it is not valid for structural use in Canada as:
- the National Building Code of Canada has no recognized design values for SPF-S lumber, and
- it does not contain a grading rule approved by the CLSAB such as the NLGA.
Stamp #2
This stamp (below) is not from a CLSAB Accredited Agency and therefore does not meet the Canadian Standard Lumber requirements for structural lumber as outlined in the National Building Code of Canada.
 | Stamp #2 (left) was also recently observed in Quebec. |
If you have questions or concerns with Grade Stamps or Lumber Grading, please contact:
Norm Dupuis, Alberta Forest Products Association: n.dupuis@albertaforestproducts.ca / 780-975-9475
Ray Gendi, Alberta Forest Products Association: rgendi@albertaforestproducts.ca / 780-818-6844