Cumaru (Botanical name Dípteryx odoráta) is one of the exotic tree species that grows in South America in the valley of the Amazon River. This noble tree is unique for its natural properties and technical characteristics of a tropical wood. Often Cumaru is called “Brazilian teak”, not because of its common biological origin, but because of its durability and sustainability. However, Cumaru hardness (3340 lbf on the Yanka scale) exceeds the hardness of teak (1155 lbf) by almost 3 times.
There are two types of Cumaru: Gold Cumaru and Red Cumaru. The color of the non-tinted natural wood depends on the soil on which the plant grows. The red colour is inherent in trees growing in a soil high in iron and Red Cumaru is more common to be used for external works.
The advantages of Cumaru
Cumaru grows in a hot and rainy tropical climate. Thus, this wood is naturally not only resistant to high humidity, but also withstands both high and low temperatures. Cumaru is so strong, dense and hard that it is called ‘iron wood’. Its density is 1.07 g / cm³. It contains essential oils and natural preservatives that resist harmful insects, putrefactive bacteria, parasites and fungi. It is impossible to find a wormhole or rot on the terrace board and decking.
Cumaru is one of the most versatile woods in the world for decking and cladding. It is used in countries with the most extreme weather conditions from the tropics, with very high humidity and temperature, to the northern regions of Canada and Norway. Under any climatic conditions, the characteristics of Cumaru and its properties remain superior to other popular wood species.
The density of this wood is about 1075 kg / m³ (for comparison, the density of oak is about 700 kg / m3, that is, one and a half times less).
Cumaru belongs to Class 1 in its natural durability. Class 1 guarantees the use for at least 50+ years without any additional treatments or preservatives.
Cumaru has a very wide range of uses in commercial buildings and residential premises. For example, Cumaru is used in the construction of bridges (including parts in contact with water and land), structural elements of houses, and pillars.
Cumaru is widely used for floorings since it is incredibly scratch-resistant. Cumaru flooring will serve decades. This is why Cumaru is used not only in private houses and apartments, but also in expensive hotels and restaurants. The flooring is not only durable, but also stylish – pleasant colors with smooth transitions and slightly wavy stripes give the room a special expressiveness, soothe and delight the eye.
Cumaru has been tested to have a fiber bending strength of 22,400 psi. This incredibly high result is an evidence that Cumaru terrace decking is superior to most other wood species, as well as a synthetic wood-polymer composite.
Cumaru is a high-performance exterior hardwood for decking and siding. It is very reliable and has a low maintenance cost.
Cumaru can be used without special treatment for open terraces, arranging of pool frames and finishing of bathrooms and baths. Like all other species, Cumaru becomes silver-gray from the sun’s rays. Oil treatment that blocks UV is the only thing that is needed to care for Cumaru timber. Oil will also emphasize the natural rich colour and beauty of natural wood.