Pressure-Treated Southern Yellow Pine
Pinus echinata, P. elliottii, P. palustris, or P. taeda • Softwood (treated for exterior use)
Grain Pattern
Coarse, straight grain with significant flat-sawn cathedral patterns; frequent knots and checking visible due to weathering.
Color Description
Originally yellowish-tan with a distinct greenish hue from copper-based preservatives; currently weathered to a silvery-grey and light brown patina with visible surface checking.
Hardness Rating
Approximately 690 lbf (Soft to Medium); typical for Southern Yellow Pine.
Durability Rating
Very Durable (as treated); the chemical treatment makes non-durable pine highly resistant to rot, fungal decay, and termites.
Common Uses
External decking, framing, fence posts, marine pilings, and outdoor landscaping structures.
Geographic Origin
Southeastern United States; widely grown in plantations across the Gulf and Atlantic states.
Market Value & Sustainability
Estimated Market Value
Approximately $1.50 - $2.50 per board foot depending on treatment grade and local market.
Wood Age Estimate
Estimated 5-10 years; indicated by significant graying, surface checking (cracks), and slight cupping under UV exposure.
Sustainability Status
Highly Sustainable; categorized as Least Concern by IUCN; widely available with FSC or SFI certification from managed plantations.
Workability
Generally easy to work with power tools, though knots can be brittle; the high resin content and moisture from treatment can gum up saw blades and sandpaper.
Notable Features
Features a chemically distinct metallic scent when cut; contains copper-based preservatives; dust can be an irritant; high resin content.
Finish Recommendations
Requires weathering before finishing; semi-transparent or solid oil-based stains are recommended to protect against UV and moisture.
Identification Confidence
High; the grain structure, knot frequency, flat-sawn patterns, and presence as exterior decking boards are quintessential for PT Southern Yellow Pine.