Brazilian Teak Hardwood Flooring: Pros, Cons, and Buying Guide

If you want a floor that can survive dogs, kids, dropped cast-iron pans, and decades of foot traffic, Brazilian teak hardwood flooring belongs on your shortlist. Marketed under the name Brazilian teak, this wood is actually cumaru (Dipteryx odorata), and it ranks among the hardest commercially available flooring species in the world. I have installed a lot of exotic hardwoods over the years, and few of them punish saw blades and nail guns the way this dense, oily South American timber does.

Before you fall for the marketing name, it helps to understand what you are actually buying, how it behaves once it is down, and whether its extreme density is a benefit or a headache for your project. This guide walks through the real numbers, the trade-offs, and how to shop smart.

What Is Brazilian Teak (Cumaru)?

Brazilian teak is a trade name, not a botanical one. True teak comes from the Tectona genus grown mostly in Southeast Asia, and it is a completely different wood. Cumaru simply earned the “teak” label because of its rich color and outdoor durability. You will also see it sold as Southern chestnut or tonka bean tree, since the seeds are the source of tonka bean flavoring.

The wood ranges from a warm honey-tan to a deep reddish-brown, often with olive or golden undertones and interlocked grain that produces a subtle striped figure. That interlocked grain is beautiful, but it is also part of why the boards are so tough to work with hand tools.

Janka Hardness and Durability

The headline number is the Janka hardness rating: cumaru sits around 3,540 pounds-force. To put that in perspective, red oak measures about 1,290, hard maple roughly 1,450, and even hickory only reaches about 1,820. Brazilian teak is nearly three times harder than red oak. For a busy household, that means dents from furniture legs, pet claws, and heels are far less likely to leave a permanent mark.

• Cumaru (Brazilian teak): ~3,540 Janka
• Brazilian cherry (jatoba): ~2,350 Janka
• Hickory: ~1,820 Janka
• Hard maple: ~1,450 Janka
• Red oak: ~1,290 Janka

Beyond surface hardness, the wood carries natural oils and a tight cellular structure that make it highly resistant to rot, decay, and insects. That is why cumaru is also popular for exterior decking. Indoors, those same properties translate to a floor that shrugs off spills and holds up in high-traffic entryways and hallways.

Color Changes Over Time

Here is something every buyer needs to know: Brazilian teak is strongly photosensitive. When freshly milled and installed, boards often look lighter, tan, or golden. Over the first three to six months of sun exposure, the wood darkens and deepens into that classic rich reddish-brown. This is normal and permanent.

The practical takeaway is that you should not leave area rugs, furniture, or boxes sitting in fixed spots during the first several months. If you do, you will get lighter “shadow” patches where the sun could not reach. Rotate rugs periodically at the start, and let the whole floor mature evenly before committing to a permanent furniture layout.

Pros of Brazilian Teak Flooring

• Extreme hardness: At ~3,540 Janka, it is one of the most dent-resistant floors you can install.
• Rot and insect resistance: Natural oils fend off decay, termites, and fungus.
• Rich, evolving color: The deep reddish-brown tone is warm and upscale, and it improves with age.
• Long lifespan: A solid cumaru floor can realistically last 50 to 100 years with basic care.
• Refinishable: As a solid or thick-veneer engineered product, it can be sanded and refinished multiple times.

Cons and Challenges

No floor is perfect, and cumaru’s biggest strength is also its biggest installation headache. That extreme density makes it genuinely difficult to work with.

• Hard to nail and cut: The wood dulls blades quickly and can split if you nail without pre-drilling. Pneumatic flooring cleats are a must, and even those struggle. Budget for extra saw blades.
• Movement with humidity: Like most exotics, cumaru moves with seasonal moisture swings. Keep indoor relative humidity between 35% and 55% year-round and acclimate the wood on site for at least 7 to 14 days.
• Photosensitive color shift: If you love the light freshly-milled look, you will not keep it.
• Finishing quirks: The natural oils can interfere with some site-applied finishes, so many buyers choose factory-prefinished boards with an aluminum-oxide topcoat.
• Cost: As an imported exotic, it sits at the premium end of the price scale.

Cost of Brazilian Teak Hardwood Flooring

Expect to pay roughly $5 to $9 per square foot for the material alone, depending on grade, board width, and whether it is solid or engineered. Clear, select-grade wide planks push toward the top of that range and beyond. Professional installation typically adds $3 to $6 per square foot, and because this wood is so hard to fasten, some installers charge a premium for exotics.

For a 300-square-foot room, a realistic installed budget lands somewhere between $2,400 and $4,500. That is more than domestic oak, but you are buying a floor that may outlast the house itself.

Common Sizes and Formats

Brazilian teak is sold both as solid 3/4-inch tongue-and-groove and as engineered planks. Typical board widths run from 3 to 5 inches, with some wide-plank options at 6 to 7-1/4 inches. Standard solid boards are 3/4 inch thick, allowing several future sandings. Engineered versions with a 2 to 4 mm wear layer are a smart choice over concrete slabs or in basements where a nail-down solid floor is not practical.

Solid vs. Engineered

Choose solid cumaru for above-grade rooms with a plywood or wood subfloor where you want maximum refinishing life. Choose engineered cumaru for slab-on-grade, radiant heat, or humid climates, where its layered construction resists cupping and gapping better than a solid plank.

Installation and Maintenance Tips

Acclimate the flooring in the installation space for one to two weeks so it can adjust to your home’s humidity. Always pre-drill near board ends before nailing to prevent splitting, and expect to swap out cutting blades more often than you would with oak. For wide planks or slab installations, a full-spread urethane adhesive or a glue-assist nail-down method improves long-term stability.

Maintenance is refreshingly simple. Sweep or vacuum regularly, wipe up spills promptly, and clean with a pH-neutral hardwood cleaner. Use felt pads under furniture and avoid steam mops, which can drive moisture into the seams. With that basic routine, a Brazilian teak floor will look sharp for generations.

How It Compares to Other Exotics

Buyers cross-shopping Brazilian teak usually look at Brazilian cherry (jatoba) and tigerwood. Jatoba, at roughly 2,350 Janka, is softer but shows even more dramatic color-darkening over time, going from salmon-orange to a deep burgundy red. Tigerwood offers bold contrasting stripes but is less hard, around 1,850 Janka. Against both, cumaru wins on sheer toughness and edges out on rot resistance, though it is the most difficult of the three to install.

If your priority is a floor that essentially never dents and can live in a mudroom, a lake house, or a rental you never want to refinish, cumaru is the leader. If you care more about a specific dramatic color story and want easier installation, one of the softer exotics may suit you better. Ask your supplier for the botanical name (Dipteryx odorata) so you know you are getting genuine cumaru and not a look-alike sold under a fuzzy “Brazilian teak” label.

Sustainability and Sourcing

Because cumaru grows in South American rainforests, responsible sourcing matters. Look for flooring certified by the Forest Stewardship Council (FSC), which verifies the wood came from responsibly managed forests. Reputable dealers will provide chain-of-custody documentation. Buying certified stock protects both the forest and your investment, since certified suppliers tend to grade and mill more consistently. If a deal looks too cheap for a genuine exotic, be skeptical about both the species and its origin.

Is Brazilian Teak Right for You?

Brazilian teak hardwood flooring is an outstanding pick if durability is your top priority and you want a warm, high-end look that deepens with age. It is ideal for high-traffic homes, active families, and pet owners. The trade-offs are cost, the difficulty of installation, and the color shift you have to plan around. If you are comfortable with those, few floors deliver this combination of toughness and beauty.