Sitka Spruce
Picea sitchensis
Hardness
On the soft side; easy to work, but marks with hard use.
Overview
The premier strength-to-weight wood, light, stiff, and strong. The traditional choice for aircraft, ladders, and especially acoustic guitar and piano soundboards.
Commonly built
- Guitar tops
- Piano soundboards
- Aircraft parts
- Oars
Appearance
Creamy white to pale yellow, very straight and even-grained; tight, regular growth rings. The clearest, straightest grades are prized for instruments.
Recommended uses
Uses to avoid
Similar species
Comparable on hardness, type, and workability, useful when this species isn't available.
Working notes
Works well with sharp tools but can be splintery, and knots dull blades. Exceptional stiffness-to-weight. Tonewood grades are expensive and clear; utility grades are cheaper. Doesn't take stain evenly. Low decay resistance.
Wood movement
A 24-inch-wide flatsawn sitka spruce panel moves roughly 0.41 inch across a typical seasonal humidity swing (about 6% to 12% moisture content). Use the wood movement calculator to run your own board size and moisture range.
How much does Sitka Spruce move? → See flatsawn vs. quartersawn figures and a worked example.
Common questions
How hard is Sitka Spruce?
Sitka Spruce has a Janka hardness of 510 lbf, a measure of how well it resists denting and wear.
Is Sitka Spruce suitable for outdoor use?
Sitka Spruce is best used indoors; it is not naturally suited to sustained outdoor or wet conditions.
How easy is Sitka Spruce to work with?
Sitka Spruce has Good workability for cutting, shaping, and joinery.
How much does Sitka Spruce move seasonally?
A 24-inch-wide flatsawn sitka spruce panel moves roughly 0.41 inch across a typical seasonal humidity swing (about 6% to 12% moisture content).
Finishing notes
As a soundboard/instrument wood it is typically finished with thin coats of lacquer, shellac, or French polish that add minimal mass so the wood can still vibrate; heavy film finishes are avoided on tops. For non-instrument uses it takes a light clear finish; blotch-prone like most softwoods if stained, so condition first.
Community photos
Real photos from woodworkers who've used sitka spruce, reviewed before they appear here.
Loading…
Wood data varies by source and sample. How we source and review our data.