Tropical Hardwood Decking Compared: Ipe, Cumaru, Garapa, Massaranduba, and Tigerwood

Tropical Decking Species Beyond Ipe

The tropical hardwoods used for decking share high density and Class 1 durability, but they span a real range of cost and color, which is what lets a buyer optimize instead of defaulting. The USDA Forest Products Laboratory documents that decay resistance and hardness rise with density, and all of these species sit near the top of the scale. The differences that matter to a buyer are price tier, color, and how easily the wood works. Once that spread is visible, the question stops being which wood is best and becomes which one is right for this deck.

How to Choose a Tropical Decking Species

The species follows the priority: longest life points to Ipe, value points to Cumaru, red color to Massaranduba, figure to Tigerwood, and a light, cooler surface to Garapa. Ipe by name is a habit, not a specification.

• Ipe for the longest service life (40 to 75 years) and the most uniform color. See our complete Ipe guide.
• Cumaru for near-Ipe performance at a lower cost; see Ipe vs. Cumaru.
• Massaranduba for a deep red deck with high hardness at a moderate price.
• Tigerwood for a dramatic, figured look with dark streaking.
• Garapa for a light golden color that runs cooler underfoot in sun; see our Garapa decking guide.

Installation Requirements Shared by All Tropical Decking

Every tropical decking species here needs kiln-drying, stainless fasteners, pre-drilling or pre-grooving, and either a penetrating oil or acceptance of a silver-gray patina. None takes a film finish. All reach Class A fire performance under ASTM E84 by virtue of density. And all require legal-sourcing documentation, FSC chain-of-custody and, where the species is CITES-listed, the corresponding paperwork. For a broader durability benchmark, compare against wood decking versus composite. J. Gibson McIlvain stocks the full tropical decking range, Ipe, Cumaru, Garapa, Massaranduba, and Tigerwood, from one FSC-certified inventory, which is what lets the recommendation follow the project instead of the shelf. Documentation settles legality; availability settles whether the deck can actually be filled.

Availability, Lengths, and Lead Time Across the Species

Beyond hardness and color, the tropical decking species differ in how readily they are stocked in long lengths and matched grades, which affects lead time and how cleanly a large deck can be filled. Ipe and Cumaru are the most widely stocked and the easiest to source in long lengths and matched material, which is why they dominate large and commercial decks. Garapa, Massaranduba, and Tigerwood are available but from fewer suppliers, so depth and lead time vary more by source.

This is where inventory depth becomes a selection factor in its own right: a species is only practical if the supplier can fill the cut list in matched lengths without substitution. A deep supplier that carries the full range can also mix species deliberately, for example a light Garapa field with a dark Ipe border, from one source with consistent drying and grading. J. Gibson McIlvain stocks the full tropical lineup, kiln-dried and graded, and ships nationwide, so species selection is not constrained by what a single yard happens to carry. For quantity planning, see our board feet guide. Depth answers whether the boards exist; climate decides which of them belongs on the site.

Matching Species to Climate and Region

Every dense tropical hardwood resists decay, but climate still shapes the choice: hot, sunny sites favor lighter species for cooler surfaces, coastal sites reward the hardest species and 316 stainless hardware, and freeze-thaw regions benefit from careful drying and spacing. In hot southern sun, a light Garapa deck stays more comfortable underfoot than dark Ipe. On the coast, all these species resist salt air, but the hardest, like Ipe and Massaranduba, best resist abrasion from wind-blown sand, and hardware moves to 316 stainless.

In cold, wet, freeze-thaw climates, the dense, low-absorption tropical hardwoods handle the cycling well when installed at the right moisture content with drainage that clears water before it freezes in joints. The species is durable everywhere; the detailing adapts to the region. Our guide on coastal salt and wind resistance covers the marine environment. J. Gibson McIlvain ships the full tropical decking range nationwide and advises on the species and hardware a given climate calls for. Climate narrows the field by comfort and exposure; the Janka numbers narrow it by wear.

Janka Hardness of Tropical Decking Species

The Janka hardness scale measures the force needed to press a steel ball halfway into the wood, so a higher number means a harder, more dent-resistant surface, and the tropical decking species all sit near the top. For reference, Western Red Cedar is around 350 lbf, while Ipe is near 3,680, Cumaru near 3,540, Massaranduba near 3,190, Tigerwood near 2,170, and Garapa near 1,700. Every one of these tropical species is dramatically harder than softwood decking, which is why they resist wear and last decades.

Hardness is not the only factor, durability class and stability matter too, but it is a useful shorthand for how a deck will hold up to traffic and impact. J. Gibson McIlvain stocks the full range across this hardness span, kiln-dried and graded, and ships nationwide. Hardness is one column of the story; density, movement, and durability class fill in the rest.

Durability, Density, and Movement Data

Across the tropical decking species, density predicts durability and hardness: Ipe near 1,050 kg/m3 (Janka about 3,680 lbf), Cumaru near 1,070 (3,540 lbf), Massaranduba near 1,150 (3,190 lbf), Tigerwood near 850 (2,170 lbf), and Garapa near 800 (1,700 lbf). All rate Class 1 or Class 1 to 2 for durability under EN 350, and the denser species reach ASTM E84 Class A flame spread without treatment. The USDA Forest Products Laboratory Wood Handbook documents that both decay resistance and hardness climb with density, which is the thread connecting these figures.

Movement in service also tracks with the species: all are kiln-dried to roughly 12 to 16 percent moisture content, and the denser tropicals show low tangential shrinkage, on the order of 6 to 9 percent green to oven-dry, so a properly dried deck of any of them stays flat. Service life ranges from about 25 years for the lighter species to 75 years for Ipe. These measurable differences are what let a buyer match a species to a project on data, not just appearance. J. Gibson McIlvain stocks the full range graded to these specifications and ships nationwide. When the numbers disagree with the habit, trust the numbers.

Durability and Service-Life Reference

Durability class and expected service life by species, per EN 350 ratings and the density data of the USDA Wood Handbook. Numbers like these are what separate a specification from a guess.

"People come in asking for Ipe because it is the name they know, and sometimes Ipe is right. But if they want a red deck, Massaranduba is stunning. If they are barefoot around a pool, Garapa runs cooler and lighter. If the budget is the issue, Cumaru gets them ninety percent of the way for less. Carrying the whole range is the point, because then the recommendation fits the project instead of the shelf."

Camden Zacker, Sales Director, J. Gibson McIlvain Company