Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Straight grain with prominent, latewood bands producing a distinct flat-sawn cathedral pattern; coarse texture with a marked difference between earlywood and latewood.
Color Description
Light brown to reddish-brown heartwood with a narrow band of yellowish-white sapwood. Colors tend to darken and redden significantly with age and UV exposure.
Hardness Rating
660 lbf (Soft)
Durability Rating
Moderately Durable; offers moderate resistance to decay but is susceptible to insect attack (termites).
Common Uses
Heavy structural construction (beams, poles, trusses), flooring, cabinetry, interior trim, and boat building.
Geographic Origin
Western North America (Pacific Northwest, Rocky Mountains).
Market Value & Sustainability
Estimated Market Value
$2.50 - $5.00 per board foot depending on grade (Vertical Grain/Clear vs. Construction Grade).
Wood Age Estimate
Post-industrial/Modern (less than 20 years). The surface shows recent oxidation, surface dirt, and mechanical abrasions typical of construction-grade lumber stored outdoors.
Sustainability Status
Least Concern (IUCN); widely available and harvested from sustainably managed forests; FSC certification common.
Workability
Generally easy to work with both hand and machine tools, though it can be prone to splintering and breakout. It glues and finishes well but may require a sealer to prevent uneven staining due to density differences.
Notable Features
Distinctive resinous scent when cut; high strength-to-weight ratio among softwoods; known for its stiffness and stability in structural applications.
Finish Recommendations
Penetrating oils or clear polyurethane. A wood conditioner or pre-stain sealer is highly recommended if using pigment-based stains to avoid 'blotching' in the softer earlywood.
Identification Confidence
High; the wide latewood growth rings, reddish-brown hue, and the specific transition between earlywood and latewood are characteristic of Pseudotsuga menziesii.