Douglas Fir
Pseudotsuga menziesii · Softwood
- Type
- Softwood
- Origin
- Western North America (Pacific Northwest)
- Hardness
- 660 lbf (Soft)
- Durability
- Moderately Durable - has moderate resistance to decay but is susceptible to insect attack if untreated.
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Grain Pattern
Generally straight or slightly wavy with a prominent latewood/earlywood contrast. This sample shows flat-sawn cathedral patterns and a visible tight knot. Texture is medium to coarse.
Color & Appearance
Heartwood typically ranges from light brown to a reddish-tan; sapwood is yellowish-white. The sample shows a weathered, grayish patina indicating oxidation and light exposure, which is common in older construction lumber.
Hardness (Janka)
660 lbf (Soft)
Durability & Decay Resistance
Moderately Durable - has moderate resistance to decay but is susceptible to insect attack if untreated.
Value & Sustainability
- Estimated Market Value
- $1.50 - $4.00 per board foot depending on grade (clear vertical grain is significantly more expensive).
- Wood Age Estimate
- Approximately 10-30 years based on the degree of surface graying, oxidation, and historical saw marks visible on the rough-sawn surface.
- Sustainability Status
- Not listed in CITES Appendices or on the IUCN Red List. Widely available and commonly FSC certified from sustainable logging operations.
Common Uses
Heavy structural construction (beams, veneer, flooring), boat building, and exterior joinery. This specific board appears to be a common construction-grade framing member.
Geographic Origin
Western North America (Pacific Northwest)
Workability
Works well with both hand and machine tools, though it can be prone to splintering and tearout during machining. Responds well to glues and finishes, though resin pockets can occasionally cause issues.
Finish Recommendations
Responds well to oil-based stains and clear coats. For outdoor use, a UV-inhibiting sealer is recommended to prevent further graying.
Notable Features
Distinctive resinous scent when cut. It has the highest modulus of elasticity of any North American softwood, giving it excellent structural strength.
