Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Predominantly straight grain with prominent, darker earlywood/latewood contrasts. The sample shows a flat-sawn cathedral pattern with small distinct knots and a medium-coarse texture.
Color Description
Light brown to reddish-brown heartwood with a distinct yellowish-white sapwood. The wood shows a high degree of contrast between the rings and typically darkens to a more pronounced reddish-orange with age and sunlight.
Hardness Rating
660 lbf (Soft)
Durability Rating
Moderately Durable; has moderate resistance to decay but is susceptible to insect attack. Performs well in outdoor structural applications when treated or kept dry.
Common Uses
Heavy structural construction (beams, trilayer beams), flooring, cabinetry, interior trim, veneer, and boat building.
Geographic Origin
Western North America (Pacific Northwest, Rocky Mountains)
Market Value & Sustainability
Estimated Market Value
$3.00 - $6.00 per board foot depending on grade (Vertical Grain vs. Flat Sawn)
Wood Age Estimate
The board appears to be relatively new stock, likely milled within the last 1-3 years, showing minimal surface oxidation or deep patina.
Sustainability Status
Not listed on CITES Appendices or the IUCN Red List. Widely available as FSC certified and considered a sustainable choice due to fast growth and managed forestry.
Workability
Generally easy to work with both hand and machine tools, though the difference in hardness between earlywood and latewood can cause 'washboarding' during sanding. Glues and finishes well.
Notable Features
Distinctive resinous scent when cut. High strength-to-weight ratio makes it the premier choice for North American structural lumber.
Finish Recommendations
Penetrating oils or clear polyurethanes work best. Pre-stain conditioner is highly recommended if staining to avoid blotchiness due to uneven absorption rates.
Identification Confidence
High; the combination of prominent growth ring contrast, color, and specific knot structure is diagnostic for Douglas Fir.