Teak
Tectona grandis • Exotic/Tropical
Grain Pattern
Generally straight to slightly interlocked with a coarse, uneven texture. The end-grain shows distinct growth rings with semi-ring-porous structure and visible oily streaks.
Color Description
Heartwood is typically a golden or medium brown, darkening with age to a deep rich brown. Sapwood is a pale yellowish-white. It possesses a dull luster and characteristic oily feel.
Hardness Rating
1,070 lbf (Medium)
Durability Rating
Very Durable. Highly resistant to rot, termites, and fungal decay due to high natural oil content and silica.
Common Uses
Boat building (decks and trim), high-end outdoor furniture, flooring, veneer, cabinetry, and exterior construction.
Geographic Origin
Native to Southern Asia (India, Myanmar, Thailand); widely grown on plantations in tropical regions worldwide (Africa, Latin America).
Market Value & Sustainability
Estimated Market Value
$30.00 - $50.00 per board foot for high-quality FEQ (First European Quality) lumber.
Wood Age Estimate
The sample appears modern with fresh mechanical cuts, showing minimal oxidation or UV-induced darkening, likely processed within the last 1-5 years.
Sustainability Status
Not CITES listed but some wild populations are threatened. FSC-certified plantation teak is widely available and recommended for sustainability.
Workability
Generally easy to work but contains high silica content which rapidly dulls tool edges. Glues well if surfaces are wiped with a solvent (like acetone) to remove surface oils.
Notable Features
Distinctive leather-like odor when freshly cut. High natural oil content makes it weather-resistant and gives it a greasy feel; high silica content acts as a natural abrasive.
Finish Recommendations
Teak oil or penetrating sealers are preferred to maintain natural beauty. Lacquer and polyurethane may have adhesion issues unless the wood is thoroughly degreased first.
Identification Confidence
High. The golden-brown hue, prominent growth rings on the end grain, coarse texture, and characteristic oily appearance are hallmark indicators of Tectona grandis.