Brazilian Teak

Cumaru, Tonka, Southern Chestnut, Brazilian Chestnut, Dipteryx odorata

Appearance

Teak Brazilian

Shown with water-based finish (top), and oil-based finish (bottom)

Color: At first, red-brown or purple-brown with light yellow-brown or purple streaks; after exposure, uniform light brown or yellow-brown.

Grain: Fine texture, interlocked, waxy or oily feel.

Species & Grade Variations: Dramatic shading that mellows as the floor matures.

Properties

Hardness (Janka): 3540 (174% harder than Northern red oak).

Dimensional Stability: Average (7.6; 12% more stable than red oak).

Workability

Sawing/Machining: Works well, but is very hard—use carbide blades and bits.

Sanding: Difficult. Scratches are easily seen—each sanding must carefully remove the scratches from the previous cut, or sanding marks will be visible in the finish.

Suggested Sequence:

  • First Cut: 50 at a 7-15 degree angle with the grain
  • Second Cut: 60 or 80 straight with the grain
  • Third Cut: 100
  • Hard Plate: 100
  • First Screen: 80
  • Second Screen: 100 or 120

Nailing: Pre-drilling and hand-nailing are preferred.

Finishing: Test all products before using them on the actual job site. Oil-modified finishes may not dry when applied over this wood if standard procedures are followed. Moisture-cure urethane, conversion varnish and waterborne finishes are generally more successful with this species.

Comments: Has been known to cause contact dermatitis.

Origin

South America.

Availability

Moderately available.