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Technical Information

Below you will some Techincal Information about Cumaru Decking. 

  • Botanical Name:  Dipteryx Odorata
  • General information about Cumaru Decking.

Cumaru is a hardwood that is Native to Brazil.  This hardwood is sometimes referred as “Brazilian Teak”.  It is one of the most popular Brazilian hardwoods and its stability in the outdoor environments makes it a great product for decks, siding, and other outdoor projects.

  • Environmental Impacts

Deckstoronto Imports Cumaru Decking from some of the largest suppliers in Brazil who are involved in all aspects of producing Cumaru Decking – from harvesting to milling.  For every Cumaru Tree that is cut down, several other Cumaru Trees are re-planted or space is made for small Cumaru Trees to grow that already surround the Cumaru tree that is chosen to be cut down.   Cumaru decking is not listed on the IUCN Red List of Threatened Species or in the CITES Appendices

  • About the Wood, Tree and Timber

Cumaru Trees are very tall, generally ranging from 65 ft. – 100 ft. in height.  The trunks of these trees are between 3ft and 5ft in diameter.  The density of Cumaru in its dried state is 1080 kg/meter cubed.   The grain is usually straight, deck boards are free of knots. 

  • Wood Bending Strength and Hardness

Cumaru Decking is extremely hard, it has a rating of 3200 on the Janka scale, which makes it harder than Oak, and much harder than cedar, pressure treated and any type of a maintenance free deck product.   The bending strength of Cumaru decking is 14793 psi which is very high and it results in very little deflection due to live load.

  • Movement

The movement outdoors is low.  It is best to protect this decking with a hardwood oil on all sides prior to installation to prevent it from absorbing moisture.




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