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Cumaru Decking Information

Everything you need to know about Cumaru Decking.
cumaru decking specs

Cumaru Decking Specifications

Advantage Cumaru Decking is Both Long-Lasting & Eye-Catching
Discover More About Cumaru Decking:
Cumaru Decking Photos & Videos Specs Cumaru Wood Install Instructions Price

Cumaru Decking Technical Info

cumaru decking with fireplace
Cumaru Deck With A Fireplace

Cumaru Decking Specs

Botanical Name:  Dipteryx Odorata

Common Name:  Cumaru

Other Common Names:  Almendrillo, Brazilian Teak, Tonka, Tonquin Bean

General Characteristics: Color varies from a golden tan to a reddish brown with some dark grain accents through out the wood.

Moisture Content of Decking: Our Cumaru Decking is specially dried for use on exterior projects.
We also sell Cumaru lumber kiln dried specifically for interior use. DO NOT use kiln dried interior lumber in exterior projects as it will expand.  Cumaru Decking dried for exterior use will shrink inside.

Janka side hardness:   3,540 lb at 12% moisture content. 

Bending Strength:   10,975 psi

Drying: Cumaru is rated as easy to air-season with a slight tendency to check and with moderate warping; drying was uniformly rapid.

Working Properties:  Has a blunting effect on cutters, use of carbide tipped saw blades is necessary.  Routs nicely.  Must be predrilled for fastening.

Distribution:  South America

Durability:  Cumaru is very durable. The heartwood has shown to be very durable in resistance to both brown-rot and white rot fungi. The wood has excellent weathering characteristics.

Uses: Outdoor Decking, flooring, cogs and shafts, heavy construction, barge and dock fenders, railroad crossties, pulp mill equipment, tool handles, bearings, turnery. A substitute for lignum vitae.

How Does Cumaru Compare to Ipe Decking?

Many people are surprised by how similar Cumaru is to Ipe in terms of strength, durability, and longevity. Aside from the fact that Cumaru is lighter in color compared to Ipe decking, the major difference between these two exotic hardwoods is cost. Want to learn more? Check out this very informative video on the benefits of Cumaru Decking over Ipe.

Compare Cumaru to Other Types of Wood Decking

Compare the available decking woods. Read the following comparison and then give us a call (1.877.232.3915). By any measure (hardness, strength, durability, appearance), our Cumaru Decking is clearly the superior decking material across the board. Don't take our word for it, ask for a sample. Our Cumaru Decking speaks for itself! All Cumaru decking is not the same.  Our mills in Brazil cut only the finest logs for our decking production. We stock Cumaru Decking boards up to 20 foot long!!!

Click here for the Cumaru Decking online price list.

Cumaru Decking

Color varies from a golden tan to a reddish brown with some dark grain accents through out the wood.
3,540 lbs
14,793 psi
Very durable and naturally resistant to decay and insects. Offers up to 50+ year lifespan.

Douglas Fir

A light reddish-brown wood with generally straight grain.
670 lbs.
12,400 psi
Not naturally resistant to decay. Should be painted or stained to prevent decay.

Pressure Treated Pine

Very pronounced grain. Dusty yellow-green color due to chemical treatment of the wood.
690 lbs.
14,500 psi
A chemical preservative, chromated copper arsenate is forced into the wood. Offering resistance to decay, but also potential health concerns.

California Redwood

Several grades available that vary considerably in in appearance and quality. Usually straight grained with a fine, even texture. Color varies from cherry-red to dark reddish-brown.
420 lbs.
10,000 psi
Premium grades are more durable than most woods in common use. Resistant to decay, but relatively soft and quick to weather. Treatment is recommended.

Western Cedar

Fresh cut, this wood appears a salmon pink color which turns a coffee brown over time. Species is generally straight grained.
580 lbs.
7,500 psi
This softwood is more durable than most woods in common use. Resistant to decay, but relatively soft and quick to weather. Treatment is recommended.

Philippine Mahogany

Interlocked grain similar to true mahogany, but with a courser texture. Species is generally medium to dark brown.
760 lbs.
12,000 psi
Only the dark red species are resistant to decay. Although more durable than cedar and redwood, it is still relatively soft compared to Ipe Decking.

Span Chart for Cumaru Decking

Nominal Dimension Finish Dimension Joist Spacing
1x4 3/4" x 3 1/2" 16"
1x6 3/4" x 5 1/2" 16"
5/4x6 1" x 5 1/2"  24"
2x6 1 1/2" x 5 1/2" 32"

Note:  Cumaru is a very strong material.  The joist spacing shown is very conservative and designed to pass most area building codes and to have nearly zero deflection under standard loads.  The joist spacing shown is also valid if the decking is laid in a diagonal pattern to the joist.  The spans shown are typically used even with heavy loads such as hot tubs.

Find Out More About Cumaru

Click HERE to go to the Cumaru Decking price list.

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