Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Straight grain with a prominent growth ring pattern. This specific sample appears vertically grained (quarter-sawn) based on the tight, parallel alignment of the latewood lines.
Color Description
Light brown to reddish-brown heartwood with a noticeably paler yellowish-white sapwood. It features a moderate luster and tends to darken/redden significantly over time with UV exposure.
Hardness Rating
660 lbf (Soft)
Durability Rating
Moderately Durable; offers some resistance to rot and decay but is susceptible to insect attack. It is generally considered excellent for structural exterior use if treated or protected.
Common Uses
Heavy structural construction (beams, glulam), flooring, cabinetry, interior trim, boat building, and exterior joinery.
Geographic Origin
Western North America (Pacific Northwest to British Columbia)
Market Value & Sustainability
Estimated Market Value
$3.00 - $7.00 per board foot depending on grade (Vertical Grain/Clear being more expensive).
Wood Age Estimate
Recently milled (under 1 year). The wood lacks heavy oxidation, patina, or weathering marks, showing a fresh, rough-sawn fibrous texture.
Sustainability Status
Least Concern (IUCN); widely available with FSC certification. It is one of the most sustainably managed timber species in North America.
Workability
Generally easy to work with both hand and machine tools, though it can be prone to splintering and tearout during machining. It holds screws and nails well but usually requires a sealer or conditioner before staining to prevent blotchiness.
Notable Features
Distinctive resinous, sweet scent when cut. Known for the highest strength-to-weight ratio among North American softwoods. The transition between earlywood and latewood is very abrupt, creating high visual contrast.
Finish Recommendations
Polyurethane or lacquer for flooring and trim. For exterior use, penetrating oils or UV-resistant stains are recommended. A sanding sealer is highly advised due to varying density between grain lines.
Identification Confidence
High. The combination of intense, sharp latewood lines, reddish-brown hue, and visible abrupt transition between growth increments is diagnostic of Douglas Fir.