Western Red Cedar
Thuja plicata · Softwood
- Type
- Softwood
- Origin
- Pacific Northwest of North America (from Alaska to Northern California and inland to Montana).
- Hardness
- 350 lbf (Very Soft)
- Durability
- Durable to Very Durable; excellent resistance to decay and rot due to high extractive content, though susceptible to insect attack.
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Grain Pattern
Straight grain with a medium to coarse texture; exhibits a flat-sawn cathedral pattern in the center and prominent growth rings with a small tight knot.
Color & Appearance
Heartwood is a reddish to pinkish brown, often with streaks of darker brown. Sapwood is a pale yellowish white. It loses its reddish hue and turns a silvery gray when exposed to UV light/weathering.
Hardness (Janka)
350 lbf (Very Soft)
Durability & Decay Resistance
Durable to Very Durable; excellent resistance to decay and rot due to high extractive content, though susceptible to insect attack.
Value & Sustainability
- Estimated Market Value
- Approximately $5.00 - $9.00 per board foot depending on grade (Clear Heart vs. Select Knotty) and dimensions.
- Wood Age Estimate
- Relatively recent/modern stock (under 10 years). The surface shows fresh milling characteristics and minimal oxidation/patina development.
- Sustainability Status
- Not listed in CITES Appendices or on the IUCN Red List; generally considered sustainable and widely available with FSC certification options.
Common Uses
Exterior siding, decking, shingles, fences, boat building, greenhouse construction, and outdoor furniture.
Geographic Origin
Pacific Northwest of North America (from Alaska to Northern California and inland to Montana).
Workability
Very easy to work with both hand and machine tools, though its softness makes it prone to denting and scratching; must be careful of 'fuzzy' surfaces when sanding with coarse grits.
Finish Recommendations
Penetrating oils or transparent stains are best to showcase grain; if used outdoors, a UV-inhibitor is required to prevent graying. Avoid film-forming finishes like thick polyurethane which may peel.
Notable Features
Distinctive cedar-aromatic scent; contains high levels of thujaplicins which act as natural fungicides; lightweight and dimensionally stable with low shrinkage values.
