Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Straight, with a medium-to-coarse texture. Visible flat-sawn cathedral patterns are present alongside tight vertical lines. Frequent surface checking and splitting along the grain are visible due to age/weathering.
Color Description
Heartwood is typically a reddish-brown to orange color; sapwood is yellowish-white. This sample shows deep oxidation and light brown patina consistent with exposure, often graying with prolonged weathering.
Hardness Rating
710 lbf (Soft)
Durability Rating
Moderately Durable; offers some resistance to decay but is susceptible to insect attack if untreated and exposed to ground moisture.
Common Uses
Heavy structural timber, framing, flooring, boat building, exterior siding, and veneers.
Geographic Origin
Native to Western North America (Pacific Northwest) and widely planted in Europe and New Zealand.
Market Value & Sustainability
Estimated Market Value
Approximately $2.50 to $6.00 per board foot depending on grade (Vertical Grain commands higher prices).
Wood Age Estimate
30-60 years based on the heavy oxidation, surface checking (cracks), and accumulated surface grime/patina indicating it was likely salvaged from an old structure or decking.
Sustainability Status
Least Concern (IUCN); widely available with FSC certification; major timber crop globally.
Workability
Generally easy to work with hand and machine tools, though it can be prone to splintering and tearout if tools are not sharp. Holds nails and screws well.
Notable Features
Distinctive resinous scent when cut; high strength-to-weight ratio; high levels of photo-sensitivity causes rapid darkening under UV light.
Finish Recommendations
Penetrating oils or film-building finishes like polyurethane are recommended. Requires sanding to remove old oxidized surface. Use a wood conditioner if staining to avoid blotchiness.
Identification Confidence
Medium-High. The strong growth ring contrast, reddish-brown hue under the grime, and the specific linear checking patterns are hallmark traits of Douglas Fir structural timber.