Western Red Cedar Finishing Lumber is the go-to Canadian softwood for projects that need natural decay resistance without chemical treatment. The reddish-brown heartwood contains natural preservative oils (thujaplicins) that repel insects and resist rot -- making cedar the standard for exterior trim, siding, fencing, and outdoor furniture across Canada. Lightweight, dimensionally stable, and easy to work. Available at Windsor Plywood locations across Canada.
Features
- Western Red Cedar -- natural decay and insect resistance without chemical treatment
- Lightweight -- approximately 40% lighter than most softwoods, easier to handle overhead
- Dimensionally stable -- low shrinkage rate, minimal seasonal movement
- Naturally aromatic -- pleasant cedar scent
- Kiln-dried and S4S -- ready to use on arrival
- Accepts paint, stain, clear finish, or can weather naturally to silver-grey
Specifications
| Species |
Western Red Cedar |
| Origin |
British Columbia and Pacific Northwest |
| Janka Hardness |
350 lbf |
| Colour |
Reddish-brown heartwood with creamy white sapwood |
| Grain |
Straight, even texture |
| Drying |
Kiln-dried |
| Availability |
In-store -- confirm sizes and surfacing options |
Common Uses
Used for exterior trim, fascia, soffits, window and door surrounds, fencing, pergolas, outdoor furniture, planter boxes, siding substrates, and interior panelling. Cedar is the traditional choice for any exterior wood application in the Canadian climate where long-term decay resistance matters.
Pro Tips
- Use stainless steel or hot-dipped galvanized fasteners only. Standard steel reacts with cedar acids, causing black stains around every fastener hole.
- Apply a clear UV-blocking oil or exterior stain within the first few months for exterior use. Unfinished cedar weathers to silver-grey within 6-12 months.
- The heartwood (reddish-brown) contains the preservative oils. The sapwood (white) does not and decays faster. Select heartwood-dominant boards for exterior applications.
Frequently Asked Questions
How long does cedar last outdoors without finish?
Unfinished Western Red Cedar heartwood lasts 15-20+ years above ground. The heartwood contains the natural preservatives; the sapwood does not.
Is cedar strong enough for structural use?
Cedar is a finishing and cladding material, not structural lumber. Use pressure-treated lumber or Douglas fir for structural framing.
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