SPF (Spruce-Pine-Fir) commercial grouping, likely Douglas Fir or Western Larch
Pseudotsuga menziesii (Douglas Fir) or Larix occidentalis (Western Larch) • Softwood
Grain Pattern
Straight grain with a flat-sawn (plain-sawn) orientation. Visible latewood bands create a cathedral-like figure, though the surface is currently rough-sawn with prominent mill marks and fiber tearing.
Color Description
Light brown to reddish-brown heartwood with pale yellowish sapwood. The wood shows significant sun-bleaching and oxidation due to exposure, giving it a dull, tan appearance with low luster.
Hardness Rating
660 lbf (Soft)
Durability Rating
Moderately Durable; heartwood has moderate resistance to decay but is susceptible to insect attack. Sapwood has low resistance.
Common Uses
Residential framing, construction lumber, utility plywood, pallets, and sub-flooring.
Geographic Origin
Western North America (Pacific Northwest, Rocky Mountains)
Market Value & Sustainability
Estimated Market Value
$1.00 - $2.50 per board foot depending on grade and local market
Wood Age Estimate
The sample appears to be modern dimensional lumber (3-10 years old) showing signs of weathering and rough handling rather than historic aging.
Sustainability Status
Least Concern (IUCN); widely available and harvested from managed forests; frequently FSC certified.
Workability
Generally easy to work with both hand and machine tools. It can be prone to splintering and tearout during planing if tools are not sharp. Holds nails and screws well but can split near ends without pre-drilling.
Notable Features
Characteristic resinous scent when freshly cut. Features distinct transitions between earlywood and latewood. Can cause minor allergic skin reactions or respiratory irritation from dust.
Finish Recommendations
Best suited for exterior stains or paints if used outdoors. For interior use, clear polyurethane or water-based acrylics are recommended, though the resin content may require a sealer like shellac to prevent bleeding through the finish.
Identification Confidence
Medium-High; the coarse texture, prominent latewood bands, and 'fuzzy' surface indicative of soft-tissue tearing during milling are classic hallmarks of North American construction softwoods.