Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Straight to slightly wavy grain with a medium to coarse texture. Flat-sawn faces exhibit distinct cathedral grain patterns due to the sharp contrast between earlywood and latewood growth rings.
Color Description
Heartwood is typically a light reddish-brown or yellowish-tan. Sapwood is a pale yellowish-white and is clearly demarcated from heartwood. The wood tends to darken or redden over time with UV exposure.
Hardness Rating
660 lbf (Soft to Medium-Soft)
Durability Rating
Moderately Durable. It shows moderate resistance to rot and decay but is susceptible to insect attack. It is highly valued for structural stability.
Common Uses
Heavy construction, framing, glulam beams, flooring, plywood, windows, doors, and millwork.
Geographic Origin
Western North America (Pacific Northwest, Rocky Mountains) and widely naturalized in Europe and South America.
Market Value & Sustainability
Estimated Market Value
Approximately $1.50 - $4.00 per board foot depending on grade (Vertical Grain vs. Construction Grade).
Wood Age Estimate
Modern construction grade, approximately 1-5 years since milling based on the brightness of the end grain and the rough-sawn industrial texture.
Sustainability Status
Least Concern (IUCN). Widely available as FSC-certified; one of the most sustainably managed timber species in North America.
Workability
Works well with machine tools but requires sharp blades to avoid tearing the soft earlywood. Glues, stains, and finishes well, though large resin pockets can occasionally cause issues.
Notable Features
Distinctive resinous scent when cut. Known for having one of the highest strength-to-weight ratios among softwoods. Can cause splinters that are prone to infection.
Finish Recommendations
Penetrating oils or polyurethane for protection. If staining, a pre-stain wood conditioner is recommended to prevent blotchiness due to varying density in growth rings.
Identification Confidence
High. The visible growth ring contrast on the end grain, the reddish-orange hue, and the rough-sawn dimensional lumber context are characteristic of Douglas Fir.