About Us

Thayer Lumber is 100% locally owned and operated.

Thayer Lumber has been in the lumber business for 100 years. Started in 1910 by W. I. Thayer, we have gone through many changes over the years. We began as a logging and sawmill operation and quickly moved into retail lumber, building supplies and manufacturing. In our long history, Thayer Lumber has maintained an enviable reputation for excellent products and outstanding service.We remain focused on these today.


Castle Building Centres FlagWe're a member of Castle - Canada's fastest growing lumber and building materials buying group

Since 1963, builders, contractors and consumers have been relying on Castle Building Centres as their building supply partner. Whether you're looking for lumber, building materials, hardware or expert advice, hundreds of Castle dealers across Canada are trusted to deliver quality products and great value.

Castle dealers are independent. They run their own stores and businesses. They know their communities. That's why Castle members are growing and succeeding across Canada - they live in the communities they serve. At Castle, we're your trusted building supply partner.