Southern Yellow Pine (Pressure-Treated)
Pinus spp. (likely Pinus palustris, P. echinata, P. taeda, or P. elliottii) · Softwood
- Type
- Softwood
- Origin
- Southeastern United States.
- Hardness
- 690 lbf (Soft)
- Durability
- Very Durable (Treated). While the raw timber is non-durable, the pressure treatment provides high resistance to rot, fungal decay, and termites.
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Grain Pattern
Straight, coarse grain with prominent uneven growth rings; flat-sawn displaying typical cathedral patterns and narrow latewood bands.
Color & Appearance
Heartwood is reddish-brown while sapwood is yellowish-white. The dominant greenish tint is due to Chromium Copper Arsenate (CCA) or Micronized Copper Azole (MCA) pressure treatment. It will weather to a silvery gray if left unfinished.
Hardness (Janka)
690 lbf (Soft)
Durability & Decay Resistance
Very Durable (Treated). While the raw timber is non-durable, the pressure treatment provides high resistance to rot, fungal decay, and termites.
Value & Sustainability
- Estimated Market Value
- $1.20 - $1.80 per linear foot (for 2x4 dimensional lumber).
- Wood Age Estimate
- New (under 1 year). The wood shows fresh dimensional lumber stamps, sharp factory edges, and the vibrant green hue of recent chemical treatment.
- Sustainability Status
- Least Concern (IUCN). Widely available from sustainable secondary-growth forests in the US; FSC and SFI certified options are common.
Common Uses
Decking, fencing, outdoor framing, landscaping, retaining walls, and sill plates.
Geographic Origin
Southeastern United States.
Workability
Easy to work with power tools; can be gummy due to high resin content. High moisture from treatment can cause warping during drying. Avoid inhaling dust from treated lumber.
Finish Recommendations
Exterior-grade semi-transparent stain or water sealant. Use specialized deck stains. Must wait until moisture content is below 15% before painting or staining.
Notable Features
Distinctive resinous scent, heavy weight when wet with treatment chemicals, and identifies as 'treated lumber' via the green chemical staining. High tannin content can corrode standard steel fasteners.
