Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Generally straight and plain with visible growth rings. Flat-sawn with characteristic cathedral patterns and some small knots visible in the upper section.
Color Description
Light brown to reddish-brown heartwood with a narrow band of yellowish sapwood. It tends to darken or redden over time when exposed to UV light, developing a warm patina.
Hardness Rating
660 lbf (Soft)
Durability Rating
Moderately Durable. Offers some resistance to decay and rot but is susceptible to insect attack if untreated.
Common Uses
Structural framing, heavy timbers, flooring, interior trim, cabinetry, and plywood.
Geographic Origin
Western North America (Pacific Northwest)
Market Value & Sustainability
Estimated Market Value
$2.50 to $6.00 per board foot depending on grade (Vertical Grain vs. Flat Grain).
Wood Age Estimate
Relatively modern (less than 20 years). The surface appears to be a contemporary interior trim installation with consistent coloration and minimal wear.
Sustainability Status
Not listed in CITES Appendices or on the IUCN Red List; widely available and frequently FSC certified as it is a major timber crop.
Workability
Generally easy to work with both hand and machine tools, though it can splinter or tear during machining if tools are not sharp. Holds screws and nails well and glues easily.
Notable Features
Often has a distinct, resinous scent when worked. High strength-to-weight ratio makes it the preferred softwood for construction.
Finish Recommendations
Accepts most finishes well, including polyurethane and lacquer. A sanding sealer is recommended to prevent uneven absorption of stains due to density differences between earlywood and latewood.
Identification Confidence
High; the reddish-brown hue combined with the distinct growth ring structure and the presence of small, tight knots are hallmark characteristics of Douglas Fir used in interior trim.