Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Predominantly straight grain with prominent, darker latewood bands; flat-sawn and vertical grain patterns are both visible in this window casing assembly.
Color Description
Heartwood is typically a yellowish-tan to light reddish-brown; sapwood is lighter cream. It darkens and reddens significantly with age and UV exposure, as seen in the warm amber tones of this installation.
Hardness Rating
660 lbf (Soft)
Durability Rating
Moderately Durable; offers some natural resistance to rot and decay, though it is susceptible to insect attack if not treated.
Common Uses
Residential window and door frames, heavy timber construction, flooring, cabinetry, and plywood.
Geographic Origin
Western North America (Pacific Northwest through the Rocky Mountains).
Market Value & Sustainability
Estimated Market Value
$4.00 - $12.00 per board foot depending on grade (Vertical Grain/Clear being most expensive).
Wood Age Estimate
20-40 years; based on the warm amber oxidation level of the finish and the style of the window hardware and brickwork.
Sustainability Status
Not CITES listed and categorized as Least Concern by IUCN; widely available with FSC certification.
Workability
Generally works well with both hand and machine tools, though it can be prone to splintering and tearout; holds nails and screws well and finishes easily.
Notable Features
Distinctive resinous scent when cut; known for having one of the highest strength-to-weight ratios of any softwood.
Finish Recommendations
Clear film-forming finishes like polyurethane or lacquer are common for windows; oil-based stains also help highlight the prominent grain lines.
Identification Confidence
High; the combination of very distinct earlywood/latewood transitions, large-scale growth rings, and the specific reddish-gold hue of the aged finish is characteristic of Douglas Fir millwork.