Teak Lumber Specifications

Teak Lumber Grade

Premium Grade FSC Teak Lumber

  • Length: 4 ft. – 10 ft.
  • Width: 4 inches – 10 inches
  • No pith or cracks. Some sound knots allowable.
  • 95% heartwood with stable color.

Rustic Grade Select Teak Lumber

  • Length: 4 ft. – 10 ft.
  • Width: 4 inches – 10 inches
  • No pith or cracks, 4 to 6 sound knots allowable per side.
  • 95% heartwood on one side. 75% heartwood on the other side.

Lumber Dimensions

  • Standard Sizes: 4/4, 6/4, 8/4
  • Non-Standard Sizing: 5/4, 7/4, 9/4
  • Custom Sizes (up to): 10/4 & 12/4 – Call for information on these sizes
  • Standard lengths from: 4ft. – 10ft.
  • Custom Lengths: Please contact us to discuss custom sizing.

The Quarter System

  • The quarter system refers to the rough thickness of a board in 1/4″ increments.
  • Rough thickness refers to the thickness of a board before it was surfaced, or planed. For example, a 4/4 board was 1″ thick before it was surfaced.
Nominal Size Rough Size Actual Size
1/4″ System Rough Thickness S1S S2S
4/4 1″ 7/8″ 13/16″
5/4 1 1/4″ 1 1/8″ 1 1/16″
6/4 1 1/2″ 1 3/8″ 1 5/16″
8/4 2″ 1 3/16″ 1 3/4″
9/4 2 1/4″ 2 1/8″ 2 1/16″
10/4 2 1/2″ 2 3/8″ 2 6/16″
12/4 3″ 3 13/16″ 2 3/4″

Fire & Flame Retardant

Product can be applied to Teak that protects exterior and interior application such as flooring, decking, paneling that is a water-base Post-treatment fire retardant and wood preservative. Non-toxic, non-combustible, non-carcinogenic, that bonds with the cellular structure and contains no PBDEs, which are toxic to humans and the environment. Because it does not alter the structural integrity of the wood the way pressure treatment does, it also functions as a wood preservative, dries clear, and can be easily applied.

Flame & Fire Retardant Tech Graph

Total Solids:

Wt per Gallon:

Average ph:

Color:

Solvents:

Bacterial:

Fungus:

Volatility:

Toxic:

Biodegradeable:

Corrosive:

Linear shinkage:

Insects, rodents and mold:

15%

9 Lbs

7.0

White – cures Clear

Water

Good resistance

Good resistance

None

No

Yes

Mildy corrosive on unplated steel

None

Excellent resistance

Teak Lumber Specification

Character Green Dry Units
Bending Strength 10975 13710 psi
Crushing Strength 836 1087 psi
Max Crushing Strength 5543 7065 psi
Static Bending 5802 7453 psi
Impact Strength 34 26 inches
Stiffness 1408 1543 1000 psi
Work to Maximum Load 13 12 in-lbs/in3
Hardness (Janka) 1000 lbs
Shearing Strength 1890 psi
Toughness 232 in-lbs
Specific Gravity 0.53 0.59
Weight 51 40 lbs/ft3
Density 40 lbs/ft3
Radial Shrinkage 3 %
Tangential Shrinkage 6 %
Volumetric Shrinkage 7 %