Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Typically straight and plain with a very pronounced, darker latewood growth ring. Flat-sawn grain showing prominent 'cathedral' or elliptical patterns between growth rings. This sample features large, dark encased knots.
Color Description
Heartwood is typically yellowish to reddish-brown; sapwood is lighter yellowish-white. The sample shows a high contrast between earlywood and latewood bands. It darkens significantly to a deeper orange-red with UV exposure and age.
Hardness Rating
660 lbf (Soft)
Durability Rating
Moderately Durable; offers some natural resistance to decay but is susceptible to insect attack. Moderately resistant to rot when used in exterior applications compared to other softwoods.
Common Uses
Heavy structural construction (beams, glulam, framing), veneer, flooring, cabinetry, and exterior millwork.
Geographic Origin
Western North America (Pacific Northwest) and widely plantation-grown in Europe and New Zealand.
Market Value & Sustainability
Estimated Market Value
$1.50 to $4.00 per board foot depending on grade (this sample appears to be construction grade due to large knots).
Wood Age Estimate
Freshly milled to few years old; the wood shows light oxidation (patina) and remains pale, suggesting it has not been exposed to significant weathering or UV for a long period.
Sustainability Status
Least Concern (IUCN); widely available and harvested from sustainably managed forests in North America. Not CITES listed.
Workability
Generally works well with both hand and machine tools, though it can have a tendency to splinter or tear out when working against the grain. It holds nails and screws well and glues easily.
Notable Features
Distinctive resinous, sweet odor when worked. High strength-to-weight ratio. Known for its 'orange' hue as it ages. The latewood can be quite hard compared to earlywood, sometimes causing 'washboarding' during sanding.
Finish Recommendations
Responds well to most finishes; however, due to the high resin content and uneven density, a wood conditioner or sealer is recommended before staining to prevent blotching. Polyurethane or lacquer are common for durability.
Identification Confidence
High; the distinct 'flame' or cathedral grain pattern combined with the thick, dark latewood bands and characteristic dark-rimmed knots are classic diagnostic features of Douglas Fir.