Customer Care

For any questions or concerns you may have please contact CustomerCare@McDiarmid.com Please allow 1-2 business days for all inquiries to be processed.

Click here for Store Hours & Locations

Mailing Address

McDiarmid Lumber Ltd.
PO BOX 6 RPO Corydon Avenue
Winnipeg, Manitoba
R3M 3S3 Canada
Toll-Free: 1-866-452-1588