Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Generally straight grain with a prominent, coarse texture; shows flat-sawn cathedral patterns and dark, distinct latewood bands. Large tight and loose knots are present.
Color Description
Light brown to reddish-brown heartwood with a narrow band of yellowish-white sapwood. Features high contrast between earlywood and latewood; darkens to a more pronounced orange-red with UV exposure.
Hardness Rating
660 lbf (Soft)
Durability Rating
Moderately Durable; heartwood is resistant to decay but susceptible to insect attack. Excellent strength-to-weight ratio for a softwood.
Common Uses
Heavy structural lumber, construction framing, flooring, veneer, millwork, and exterior siding.
Geographic Origin
Western North America (Pacific Northwest, Rocky Mountains)
Market Value & Sustainability
Estimated Market Value
$2.00 - $4.00 per board foot for standard dimensional lumber; higher for clear vertical grain (CVG) grades.
Wood Age Estimate
Modern lumber, likely kiln-dried and harvested within the last 1-3 years based on lack of heavy silvering and fresh surface oxidation.
Sustainability Status
Least Concern (IUCN); widely available and frequently FSC certified; heavily managed in sustainable plantations.
Workability
Works well with machine tools but can be prone to splintering and tearout during planing. Sharp blades are required to avoid crushing the soft earlywood. Glues and finishes well.
Notable Features
Distinctive resinous scent when cut; known for its stiffness and stability; very common in North American residential construction.
Finish Recommendations
Oil-based stains or clear polyurethanes work well. For exterior use, high-quality UV-inhibiting sealers are recommended to slow the transition to gray.
Identification Confidence
High; visible grain transition, color tone, and knot structure are characteristic of Douglas Fir construction-grade lumber.