What Are the Benefits of Using Cumaru Wood for Decking?


Quick Answer

The benefits of using cumaru wood for decking include its hardness, stiffness and its durability. Cumaru is also very resistant to insect damage and decay, which makes it ideal for outdoor use. An alternate name for the wood is Brazilian teak.

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Full Answer

Cumaru is one of the hardest woods known. It has a rating of 3,330 pounds of force on the Janka hardness scale and a crushing strength of 13,850 pounds of force per square inch. It can stand 25,390 pounds of force per square inch before it ruptures.

Cumaru's brown heartwood often has tints of red or purple and has an interlocked grain. This means the fibers in the wood form a left- and then a right-handed spiral that alternate every few years of its growth. Like real teak, cumaru weathers in a pleasing way over time. It is also non-toxic and gives off a subtle vanilla or cinnamon smell when it is sawn.

Even though the wood is native to South America and needs to be imported, it is relatively inexpensive. The tree, dipteryx odorata, is not endangered and the wood's sustainability is good.

The one drawback with cumaru is that its hardness and stiffness makes it difficult to work with.

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