Douglas Fir (alternative: Hem-Fir / Western Hemlock)
Pseudotsuga menziesii · Softwood
AI-generated identification · may be incorrect- Type
- Softwood
- Origin
- Western North America (Pacific Northwest, Rocky Mountain region, and British Columbia).
- Hardness
- 620 - 710 lbf (Soft)
- Durability
- Moderately Durable; moderately resistant to rot and fungal decay, but susceptible to insect attack.
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Grain Pattern
Predominantly straight to slightly wavy grain, flat-sawn with cathedral growth ring transitions visible along the center face, accompanied by occasional small pin knots and a resin streak/pocket.
Color & Appearance
Pale light reddish-brown to yellowish-tan heartwood with slightly paler cream sapwood. Natural low-to-medium luster; oxidizes and darkens to a richer amber/orange-brown over time with exposure to light.
Hardness (Janka)
620 - 710 lbf (Soft)
Durability & Decay Resistance
Moderately Durable; moderately resistant to rot and fungal decay, but susceptible to insect attack.
Value & Age
$1.50 to $3.50 per board foot for standard dimensional framing lumber (higher for clear vertical grain architectural grades).
AI estimate for general guidance only — not a professional appraisal. Actual value depends on grade, dimensions, condition, and local market demand.
- Wood Age Estimate
- Freshly milled or recently surfaced modern dimensional lumber (surfaced four sides with eased edges on an industrial conveyor line).
Common Uses
Structural dimensional framing lumber, glulam beams, trim, siding, subflooring, general carpentry, millwork, and veneer/plywood.
Geographic Origin
Western North America (Pacific Northwest, Rocky Mountain region, and British Columbia).
Workability
Generally easy to cut, saw, and glue; can be prone to tearout during planing if grain reverses, and sharp earlywood/latewood density transitions can cause uneven sanding or splintering. Holds fasteners well but may split near ends without pre-drilling.
Finish Recommendations
Accepts standard oil- or water-based polyurethane, clear penetrating oils, and exterior sealers; a sanding sealer or pre-stain conditioner is recommended prior to staining to prevent uneven, blotchy absorption between growth rings.
Notable Features
Distinct, pronounced contrast between light earlywood and denser reddish latewood bands, characteristic sweet resinous aroma when cut, and noticeable pitch pocket or resin streak near the top center.
