Cumaru Guide

3 Nov 2017, 11:19 AM

Cumaru is Russet Red to Deep Brown in colour with very distinctive and exotic detail in lighter hues. It is very durable and strong. Cumaru can be left untreated and its natural colours will weather to a silver grey patina.

Technical Information

Main Species Cumaru (Dipteryx odorata)

Wood Type Tropical Hardwood

Distribution / Origin South America and Central America

Certification 100% FSC Certified

Allergic Reactions Wood dust can cause respiratory and contact dermatitis allergic reactions. Care should be taken when working with wood.

Density at 12% M.C. 1070 kilos/m3

Average Hardness Janka: 3540 (White Oak: 1360)
Brinell: 5.9 (White Oak: 3.8)

1% Moisture Movement High 0.25-0.35% based tangential / radial shrinkage = width

General Characteristics The sapwood is about 50mm wide, distinct from the heartwood and yellowish-brown in colour. The wood has a waxy or oily feel, a fine texture, and irregular and often interlocked grain. It is an extremely hard and heavy wood.

Natural Durability and Treatability Fungi and termite resistance refers to end-uses under temperate climate. Except for special comments on sapwood, natural durability is based on mature heartwood. Sapwood must always be considered as non-durable against wood degrading agents.
E.N. = Euro Norm

Funghi (according to E.N. standards): class 1 - very durable
Dry wood borers: durable - sapwood demarcated (risk limited to sapwood)
Termites (according to E.N. standards): class D - durable
Treatability (according to E.N. standards): class 4 - not permeable
Use class ensured by natural durability: class 4 – in ground or fresh water contact
Species covering the use class 5: No

According to the European standard NF EN 335, performance length might be modified by the intensity of end-use exposition.