Most stable hardwood

Mahogany from Fiji shows extremely low overall shrinkage with regards to volume and dimensions during the drying, but what truly makes it the best for keeping shape is the close to 1:1 ratio of radial (measured in the direction between the center of the tree and the bark) to tangential (measured in the direction of the circumference) shrinkage. This scientific ratio is the determining factor in woods’ resistance to warping and splitting. The wood has a natural affinity for modern finishes, compounding further advantages as the finish seals the wood in order to further unsure its resistance to moisture and temperature changes. Mahogany is less liable to warping, shrinking, swelling, and twisting than other woods. This is because of its unusual resistance to moisture and atmospheric changes. Mahogany does not move – it holds its shape. 

Extremely Durable and Resistant

In 1985, Forest Research established a field test of 20 x 20 x 500 mm stakes to compare the natural durabilities in ground contact of Fijian Mahogany (swietenia macrophylla). Fijian mahogany was given a durability class 3. This indicates an above ground durability of class II. Which means it will easily last as a decking product for 20+ years.

Mahogany is particularly resistant to rot, mold, and pother organisms of decay, both with respect to the atmosphere and with the soil. In addition  mahogany is highly resistant to the attack of drywood termites. While untreated Mahogany sapwood is susceptible to wood-boring insects like termites, the Mahogany Green World Lumber imports from Fiji is pre-treated to resist them.

Treatment for extra protection

Some tropical hardwoods have sapwood in the deck boards and it rots. All our deck boards are MCA treated for longevity and stability. Our deck boards are at least 95% heartwood, which is too dense to uptake treatment. Any sapwood that exists, uptakes the treatment to ensure long life span and protect against degradation of our deck boards. Other hardwood species don’t offer this extra level of protection. End result is a long lasting, beautiful decking option. 

Has Many uses besides decking

Mahogany is easy to work with and can be used for many purposes besides decking such as,  Shiplap siding, bullnose, V-joint and T&G

Key Features

  • 100% plantation grown
  • Kiln Dried to 12% MC
  • Class II Durability
  • High Stability
  • Tangential Shrinkage: 4.1 %
  • Radial Shrinkage: 3 %
  • Easy to work
  • uptakes stain very well
  • Grain: Straight to Interlocked
  • Treated sapwood
  • Janka Hardness:800 pounds
  • Density (KG/m3):570-600
  • 5/4×6″ / 6′-19′
  • Resistant to rot
  • Swietenia macrophylla
  • Uniform Colour
  • Can be nailed or screwed
  • Cites exempt