Douglas Fir
Pseudotsuga menziesii · Softwood
- Type
- Softwood
- Origin
- Western North America, specifically the Pacific Northwest and extending down the Rocky Mountain range.
- Hardness
- 710 lbf (Soft)
- Durability
- Moderately Durable. Offers fair resistance to decay, though heartwood is significantly more durable than sapwood against rot and weathering.
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Grain Pattern
Straight grain with tight, distinct vertical growth rings (comb-faced/quarter-sawn appearance) and a prominent round knot creating localized swirl patterns.
Color & Appearance
Light reddish-brown to yellowish-orange heartwood with a lighter yellowish-white sapwood. It has a moderate natural luster and darkens to a deeper reddish-brown hue when exposed to UV light and age.
Hardness (Janka)
710 lbf (Soft)
Durability & Decay Resistance
Moderately Durable. Offers fair resistance to decay, though heartwood is significantly more durable than sapwood against rot and weathering.
Value & Sustainability
- Estimated Market Value
- Moderate, typically ranging from $2.00 to $4.00 per board foot depending on grade and dimensions.
- Wood Age Estimate
- Relatively recent or modern lumber, likely under 5 to 10 years old based on clean surfaces and minimal oxidation.
- Sustainability Status
- Not listed on CITES appendices and generally considered of least concern by the IUCN. Readily available through sustainably managed tree farms and FSC certification.
Common Uses
Construction framing, plywood, flooring, heavy timber construction, doors, and window sashes.
Geographic Origin
Western North America, specifically the Pacific Northwest and extending down the Rocky Mountain range.
Workability
Generally works well with both hand and machine tools, though the pronounced difference in density between earlywood and latewood can occasionally cause splintering or tearout during planing if blades are not extremely sharp.
Finish Recommendations
Takes stains and finishes well, though a pre-color conditioner or sanding sealer is often recommended to prevent blotchiness due to the varying density between earlywood and latewood. Polyurethane, varnishes, and penetrating oils work effectively.
Notable Features
High strength-to-weight ratio, distinct contrasting growth rings, and a characteristic resinous scent. Contains moderate levels of extractives.
