Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Straight, medium-to-coarse grain with visible growth ring contrast. The sample shows flat-sawn characteristics with some pin knots and developmental seasoning checks (longitudinal cracks).
Color Description
Heartwood ranges from light reddish-brown to a yellowish-tan; sapwood is a paler yellowish-white. It typically darkens and reddens significantly upon exposure to light and UV.
Hardness Rating
660 lbf (Soft to Medium-Soft for a softwood)
Durability Rating
Moderately Durable; resistant to rot and decay but susceptible to insect attack. Excellent strength-to-weight ratio for structural applications.
Common Uses
Heavy structural construction, framing, flooring, cabinetry, veneer, and trim work. Used extensively for plywood and laminated beams.
Geographic Origin
Western North America (Pacific Northwest, Rocky Mountains) and widely planted in Europe and New Zealand.
Market Value & Sustainability
Estimated Market Value
$2.50 - $6.50 per board foot depending on grade (Vertical Grain/Clear vs. Construction Grade)
Wood Age Estimate
Relatively recent construction (under 10-20 years) based on the light oxidation and the présence of fresh seasoning checks in a modern dimensional lumber format.
Sustainability Status
Not CITES listed; classified as Least Concern by IUCN. Widely available with FSC certification and produced from well-managed forests.
Workability
Generally easy to work with both hand and machine tools, though it can be prone to splintering and tear-out along the grain. Glues and finishes well, though large latewood bands can lead to uneven staining (blotching).
Notable Features
Distinctive resinous/sweet scent when cut. High resin content can sometimes bleed through paint if not sealed. Remarkable structural stiffness.
Finish Recommendations
Penetrating oils or polyurethane work well. Due to the high contrast in grain density, a sanding sealer or wood conditioner is recommended before staining to ensure even color.
Identification Confidence
High; the reddish-orange hue, distinct growth ring transitions, and the specific checking pattern are characteristic of North American Douglas Fir timbers.