Find Your Store
Build with confidence using high-quality construction lumber. Ideal for framing, structural work, renovations, and general building projects, our construction-grade lumber is available in a wide range of dimensions and lengths to suit both residential and commercial applications. Whether you’re tackling a new home build, garage, basement, or outdoor structure, we carry reliable options like spruce and cedar that are kiln-dried and graded for strength and stability. Designed to perform in demanding Canadian conditions, our lumber delivers the durability and consistency that contractors, builders, and DIYers depend on. As a proudly Canadian company with locally owned stores, Windsor Plywood offers more than just materials—we provide personalized service and expert guidance to help bring your project to life. Visit your local store to explore our full range of construction lumber and get started on your next build.
Frequently Asked Questions
What sizes of construction lumber does Windsor Plywood carry?
Windsor Plywood carries standard construction lumber dimensions including 2x4, 2x6, 2x8, 2x10, and 2x12 in various lengths. Post sizes including 4x4, 4x6, 6x6, and larger timbers are also available depending on location and stock. Lengths typically range from 8 feet to 20 feet.
What species is standard for construction framing lumber in Canada?
Spruce-pine-fir (SPF) is the standard framing species group in Canada, referring to spruce, pine, and fir species that share similar structural properties and are graded together. Douglas fir is also used, particularly in Western Canada, and provides higher strength values for applications requiring larger spans or heavier loads.
What does lumber grade mean and which grade should I use for framing?
Structural lumber grades are assigned based on allowable defects, knot size, grain angle, and other factors that affect strength. No. 2 and Better is the standard grade for most residential framing. Select Structural and No. 1 grades provide higher allowable design values for applications requiring longer spans or heavier loads, such as ridge beams and headers.
Can construction lumber be used for outdoor projects without treatment?
Untreated construction lumber is not appropriate for outdoor applications exposed to moisture, ground contact, or weather. It will rot, warp, and deteriorate relatively quickly. Use pressure-treated lumber for all outdoor structural applications including deck framing, fence posts, and sleepers. Cedar and naturally durable species are alternatives for above-ground outdoor use.
How do I store construction lumber before a project to prevent warping?
Store lumber flat on level stickers, small strips of wood placed every 16 to 24 inches across the stack, to allow airflow while supporting the pile evenly. Keep it covered from rain but allow air circulation. Lumber stacked on the ground or in an unsupported pile will warp significantly. Acclimatize lumber in or near the project space before installation.