Sitka Spruce
Picea sitchensis • Softwood
Grain Pattern
Very straight, fine, and uniform grain; consistently tight growth rings typical of old-growth timber, frequently quarter-sawn for acoustic stability.
Color Description
Heartwood is usually a creamy white to a light pinkish yellow with a silky luster; sapwood is not clearly demarcated from heartwood. It tends to darken slightly to a yellow-tan with age.
Hardness Rating
510 lbf (Soft)
Durability Rating
Slightly Durable to Non-durable regarding decay resistance; low resistance to rot and insect attack if left untreated in exterior conditions.
Common Uses
Acoustic guitar soundboards, piano components, aircraft construction, boat masts, and general millwork.
Geographic Origin
Pacific Northwest of North America (coastal regions from Alaska to Northern California).
Market Value & Sustainability
Estimated Market Value
$15.00 to $30.00 per board foot for high-grade instrument tops; lower for construction grade.
Wood Age Estimate
Modern sample (under 20 years), though harvested from old-growth trees exceeding 100-200 years based on ring density.
Sustainability Status
IUCN Least Concern; widely available from FSC certified sources, though old-growth harvesting is a subject of conservation debate.
Workability
Excellent workability with hand and machine tools; glues and finishes well. Very sharp tools are required to prevent crushing of the soft fibers.
Notable Features
Outstanding strength-to-weight ratio; exceptional acoustic properties due to high stiffness and low density; faint balsamic odor when worked.
Finish Recommendations
Clear nitrocellulose lacquer or polyurethane is standard to protect the soft surface; oil finishes are common for a natural feel, though they may dampen acoustic resonance slightly.
Identification Confidence
Medium; the tight, vertical grain and creamy color are highly characteristic of soundboard-grade Spruce, though other Picea species (like Engelmann) can appear nearly identical.