Which material should you choose for a Caribbean deck?
A successful deck starts with a well-chosen material. In Guadeloupe and Martinique, it lives outdoors 365 days a year: intense sun, rainy season, termites, sea spray. Here is the honest comparison, criterion by criterion.
In Europe, a deck faces four seasons. Here, it runs a permanent marathon: humidity that never really drops, some of the strongest UV anywhere, wood-boring insects active all year round and, by the sea, salt. A material that “holds up very well” in Europe can age twice as fast here. Hence this simple rule: choose for your climate, not for the catalogue.
The seven criteria that really matter in our climate
- Resistance to termites and humidity. No winter to slow the insects, no dry season for end grain: you need a material that is durable to the core, not just surface-treated.
- Dimensional stability. The tropical rain / full sun cycle works the boards hard: swelling, shrinkage, cupping. A good material keeps fine gaps and a flat surface.
- Surface temperature. Walking barefoot at noon should stay a pleasure — that is the whole point of a Caribbean deck.
- Grip. Around a pool or after a shower, slip becomes a genuine safety issue.
- Real-world maintenance. Not the brochure’s: the one you will actually do, year after year, and its cumulative cost.
- Environment and end of life. Where the material comes from, chemical treatments, recyclability.
- Total cost — and the warranty. Purchase price + maintenance + lifespan. A solid warranty never seems important… until the day you need it.
The four material families, honestly
Tropical hardwoods (ipe, cumaru, teak…)
Their strengths: undeniable beauty, a density that inspires confidence, a long reputation in the Caribbean. Their limits: demanding maintenance (brightener then saturating oil, regularly), dense dark boards that heat up in the sun, supply chains that need close watching, prices that have risen sharply — and, in almost every case, no manufacturer warranty: durability rests on the species’ reputation, not on a written commitment.
Pressure-treated pine
Its strength: the purchase price, unbeatable. Its limits: in a tropical climate, it is the family that ages fastest — warping, splits, uneven greying — and its durability depends entirely on an impregnated chemical treatment. An economical choice at purchase, rarely in use.
Wood-plastic composite (WPC)
Its strengths: a very regular appearance and maintenance perceived as low. Its limits: it can become burning hot in full sun, its plastic content often makes it more slippery than solid wood, its thermal expansion imposes strict installation rules, scratches and stains are hard to repair, quality varies enormously from brand to brand — and at end of life, most WPCs are not recycled. We detail this match in Accoya or composite: which to choose?
Acetylated wood (Accoya®)
Its strengths: real solid wood, transformed to the core by acetylation — Use Class 4 (UC4), through natural Class 1 durability (the highest rating); termite-resistant without biocide, remarkably stable, pleasant barefoot, FSC® and Cradle to Cradle Gold certified, made in Europe, and covered by a manufacturer warranty from Accsys of up to 50 years above ground, subject to installation conditions. At the manufacturer it comes in natural golden honey or Color Grey tinted through the full thickness — the colour we distribute. Its limits: a higher purchase cost than pine or entry-level composite, and a natural tone that weathers to a silver-grey patina if left bare — some love it, others prefer to anticipate it (that is precisely what Color Grey is for). To understand the process: Accoya explained simply.
The comparison at a glance
| Criterion | Accoya® | Tropical hardwoods | Treated pine | Composite (WPC) |
|---|---|---|---|---|
| Durability & termites | Use Class 4 (UC4), insect-resistant — tested in every climate | Good to very good, depending on species and origin | Average in a tropical climate | Varies by range |
| Stability (gaps, flatness) | Almost no shrinkage or swelling | Moves with humidity | Frequent cupping and splits | Thermal expansion to allow for |
| Barefoot heat | Among the coolest (manufacturer testing) | Heats up (dense, dark woods) | Fair | Can become burning hot |
| Grip around a pool | Good slip resistance (manufacturer tests), depending on profile and installation | Fair, slippery if dirty | Fair, slippery if dirty | Often more slippery (plastic content) |
| Maintenance | Annual clean; saturating oil only to keep the tone | Regular brightener and saturating oil | Regular treatments | Cleaning; scratches and stains hard to repair |
| Environment & end of life | FSC®, Cradle to Cradle Gold, recyclable | Supply chain needs vigilance | Chemical treatment | Hard to recycle |
| Warranty | Manufacturer: 25 to 50 years, subject to conditions | Generally no manufacturer warranty | Limited | Commercial, varies by brand |
Indicative comparison, based on data published by the manufacturer Accsys and common maintenance practice. Performance varies by species, brand, origin and workmanship.
The real calculation: the cost over 25 years
Comparing prices per m² on purchase day is looking at only a third of the bill. The real cost of a deck is purchase + maintenance + lifespan. A tropical hardwood will demand brightener and saturating oil at regular intervals — product, time or labour. A pine that is cheap to buy can need replacing far sooner in our climate: the cheapest deck then ends up being paid for twice. A quality composite costs premium-wood money from the start.
Accoya costs more upfront — €110 incl. tax per m² in Accoya Color Grey — but its maintenance comes down to an annual clean, and its manufacturer warranty extends to 50 years above ground, subject to installation conditions. Over a deck’s lifetime, the purchase gap narrows sharply — and peace of mind cannot be bought back later.
Our verdict as a specialist installer
We chose to sell and install only one material: Accoya. Not out of dogma — out of consistency with the seven criteria above, which we see at work in the field. It is the only material in our comparison that ticks Use Class 4 (UC4), stability, barefoot comfort, coolness in the sun, sustainability and a written manufacturer warranty of up to 50 years above ground — provided the installation follows its specifications. That is exactly how our teams install, in Guadeloupe as in Martinique.
Your project starts here
Order your boards by the m² online, or request a free site visit for a deck installed to professional standards.
The questions that keep coming back
What is the best wood for a seafront deck in the Caribbean?
A Use Class 4 (UC4), very stable wood, installed with marine-grade stainless-steel screws: that is exactly the profile of Accoya, tested by its manufacturer in every climate and warranted for up to 50 years above ground, subject to installation conditions. Dense tropical hardwoods also age well, but without a manufacturer warranty and with more maintenance.
Does a composite deck get hotter than a wooden deck?
Yes, generally. Thermographic testing published by the manufacturer Accsys shows that a composite board in the sun becomes markedly hotter than an Accoya wood board. Under the Caribbean sun, you feel the difference barefoot immediately.
Which decking material needs the least maintenance?
No material is completely maintenance-free: every outdoor deck needs cleaning. Accoya is content with an annual clean with a brush and clear water; in the Color Grey version, tinted through the full thickness, it needs no particular finishing maintenance.