Cumaru Decking

Premium cumaru decking boards for residential and commercial projects

Janka

3,330 lbf

Density

64 lbs/ft³

Fire Rating

Class A

Durability

20+ years

Origin

Brazil

Color

Golden brown

Overview

Cumaru decking, sometimes called "Brazilian Teak," delivers exceptional hardness and durability at a more affordable price than Ipe. With a Janka hardness of 3,330 lbf and natural oils that resist decay and insects, Cumaru is an excellent choice for homeowners and contractors who want exotic hardwood performance without the premium Ipe price tag. Its warm golden-brown to reddish-brown color and subtle vanilla-like aroma make it a beautiful, long-lasting decking material.

Learn more about this wood species on our Cumaru wood guide.

Benefits of Cumaru Decking

Exceptional hardness — 3,330 lbf Janka, nearly as hard as Ipe

Natural resistance to rot, decay, and insects

Class A fire rating

20+ year lifespan for outdoor decking

More affordable than Ipe with comparable performance

Beautiful warm golden-brown color

Pleasant vanilla-like aroma when cut

Naturally slip-resistant texture

Sizes Available

1x6 Cumaru Decking

5/4x6 Cumaru Decking

2x6 Cumaru Decking

1x4 Cumaru Decking

5/4x4 Cumaru Decking

Custom lengths available

Random lengths 6'-20'

Custom sizes and lengths available. Request a custom quote.

Installation Tips

Pre-drill all screw holes — Cumaru is very hard and will split or break screws.

Use stainless steel screws or approved hardwood fasteners.

Allow 1/8" spacing between boards for expansion.

Acclimate boards on-site for 5-7 days before installation.

Seal all cut ends with end-sealer to prevent checking.

Consider hidden clip systems for a clean look.

Maintenance

Cumaru decking is low maintenance. Apply a penetrating hardwood oil once per year to maintain the warm golden-brown color. If left untreated, Cumaru will weather to an attractive silver-gray over time. Clean with mild soap and water annually. Avoid harsh chemicals or high-pressure washing.