Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Straight grain with a medium to coarse texture; pronounced growth rings with a sharp transition between earlywood and latewood, showing a flat-sawn cathedral pattern in some areas.
Color Description
Heartwood is typically a light reddish-brown, while sapwood is yellowish to white. It darkens and reddens significantly over time with exposure to light, developing a deep amber-orange patina.
Hardness Rating
660 lbf (Soft to Medium-Soft)
Durability Rating
Moderately Durable; resistant to decay but susceptible to insect attack without treatment.
Common Uses
Heavy construction, dimensional lumber, flooring, windows, doors, and veneer for plywood.
Geographic Origin
Western North America (Pacific Northwest to the Rocky Mountains)
Market Value & Sustainability
Estimated Market Value
$2.00 - $6.00 per board foot depending on grade (Vertical Grain commands higher prices).
Wood Age Estimate
The sample appears to be reclaimed or structural timber showing significant surface oxidation, surface wear, and possible termite or moisture damage, suggesting it is likely 30-60 years old.
Sustainability Status
Least Concern (IUCN); widely available and harvested from managed forests; FSC certification common.
Workability
Generally easy to work with hand and machine tools, though latewood can be hard and brittle, leading to tearout during planing. Glues and finishes well but can be resinous.
Notable Features
Distinctive resinous/sweet scent when cut; high strength-to-weight ratio; susceptible to surface check marks and splintering.
Finish Recommendations
Penetrating oils or clear polyurethane are recommended. A sealer or wood conditioner is often needed before staining to prevent blotchiness due to resin content.
Identification Confidence
Medium-High; identifying features include the prominent transition between earlywood and latewood, the reddish-brown oxidation, and the specific splintering/damage pattern typical of conifer construction lumber.