Western Red Cedar
Thuja plicata • Softwood
Grain Pattern
Straight grain with a coarse texture. Visible growth rings are fairly distinct, often displaying a flat-sawn or rift-sawn pattern in exterior construction lumber applications.
Color Description
Heartwood ranges from a reddish to pinkish brown, often with streaks and bands of darker brown. Sapwood is typically narrow and pale yellowish-white. It silvers/greys significantly over time if left unfinished outdoors.
Hardness Rating
350 lbf (Very Soft)
Durability Rating
Durable to Very Durable regarding decay resistance; contains natural thujaplicins. However, it is susceptible to insect attack and physical bruising due to low hardness.
Common Uses
Outdoor siding, decking, fencing, shingles, cedar chest linings, closet liners, boatbuilding, and exterior millwork.
Geographic Origin
Pacific Northwest of North America (from Alaska to central California and inland to the Rockies).
Market Value & Sustainability
Estimated Market Value
Approximately $4.00 to $9.00 per board foot depending on grade (Clear Heart vs. Common/Knotty).
Wood Age Estimate
5 to 15 years based on the surface oxidation, weathered texture, and accumulation of ambient dust/grime visible on the grain.
Sustainability Status
Least Concern (IUCN); widely available and harvested from managed forests; FSC certification is common.
Workability
Excellent with both hand and machine tools; however, its softness makes it prone to denting and scratching. It glues and finishes well but can be prone to splitting when nailing near edges.
Notable Features
Strong, pleasant aromatic scent; very lightweight; high resistance to rot and moisture; contains extractives that can cause corrosion in unprotected steel fasteners (stainless steel is recommended).
Finish Recommendations
Transparent or semi-transparent exterior stains recommended for UV protection; clear oils (like linseed or tung) for interior use. If left raw, it will weather to a silvery-grey.
Identification Confidence
Medium-High; the reddish-brown color, distinct linear growth rings characteristic of gymnosperms, and the structural application (likely a fence or deck) are consistent with Thuja plicata.