Most composite fences never face weather like this.
Year-round equatorial UV, salt-laden Pacific air, 80%+ humidity, and a hillside that flatly refuses to stay level. That was the brief behind this project in French Polynesia.
We shipped 28 sets of co-extruded WPC fence post and WPC fence board in Dark Grey — factory-direct, to one of the most remote markets on the planet. A local contractor handled the install.
One sourcing note up front: we build both aluminum and WPC posts — this project chose WPC, and with aluminum prices high and China’s aluminum export rebate gone, the cost math is a big reason why.
This is what we supplied, how it went up on a slope, and why a co-extruded post-and-board system is the right call when you’re sourcing fence for a brutal climate. Let’s walk the line.
The Project at a Glance
No fancy renders, no design drawings — just a real export order with a clear performance demand.
| Detail | Spec |
|---|---|
| Location | French Polynesia (South Pacific) |
| System | Co-extruded WPC fence post + WPC fence board |
| Quantity | 28 sets (factory-direct supply) |
| Color | Dark Grey (color-matched post + board) |
| Shipped | August 2025 |
| Terrain | Sloped coastal hillside |
| Install | Local contractor, horizontal full-privacy layout |
A tropical island is one of the toughest environments a fence will ever live in. If you want the background on why, our guide to composite fence for coastal areas breaks down the salt-and-UV problem in detail.
Shipping fence to a remote Pacific island isn’t just a product question — it’s a supply question.
The system has to clear certification, survive weeks in a container, and go up cleanly with a local crew and no supplier on site. That’s where buying factory-direct earns its keep.
MecoFence has manufactured co-extruded WPC fence since 2014, and ships to 50+ countries. Here’s what stands behind an order like this:
- 30,000 m² production facility — 60 extrusion lines, 100+ molds
- ~2,100 containers shipped per year
- Certified to ISO 9001, with CE, FSC, SGS and Intertek testing
- Complete, color-matched kits — every post, board, bracket, base, and cap in the box
- OEM / ODM and private-label supply for distributors and resellers
Sourcing at volume? Start with our guide to choosing a composite fence manufacturer. That’s the homework this order passed.
Why a Co-Extruded System — Not Just "Composite"
Here’s the honest part most factories skip: not all WPC is built to survive the tropics.
Uncapped, first-generation WPC absorbs moisture, swells, grows mold, and fades fast under hard sun. On a humid Pacific island, that kind of board is a 3-to-5-year product.
Co-extrusion changes the math. A protective polymer shell is bonded over the wood-plastic core in a single pass, sealing it on all sides.
That shell is what fends off UV fade, water ingress, mold, and surface staining — the exact four failure modes a coastal site throws at you. For the engineering comparison, see co-extrusion vs traditional WPC fence.
So the question for this project wasn’t “composite or wood?” It was “which co-extruded system?” That’s the key.
The Backbone: Co-Extruded WPC Fence Post
On a windy hillside, the post is the part that earns its keep. A board can only be as stable as what’s holding it.
Aluminum vs WPC Posts: Why This Project Chose WPC
MecoFence builds both — a premium aluminum post (80 mm, patented Y-slot) and this co-extruded WPC post. So we’ll give you the trade-off straight.
Most WPC fence systems still stand on aluminum, and aluminum is still an excellent post. But the cost math has shifted: prices have climbed, and China removed its 13% export tax rebate on aluminum products (effective December 2024), so aluminum posts shipped from China now land noticeably higher.
The WPC post sidesteps that swing — color-matched to the boards, insulated from the aluminum price-and-rebate squeeze, and, as these 28 sets prove, more than tough enough. For a Dark Grey island project watching cost, it was the obvious pick. Prefer aluminum? We ship that too.
Our WPC fence post is a 4″ × 4″ co-extruded profile with a Surlyn™ shell — the same tough resin used on golf balls — over an HDPE-based composite core.
Inside sits a patented anti-wobble skeleton, so the post stays rigid instead of flexing the way hollow composite posts do.
| WPC Fence Post | Spec |
|---|---|
| Profile | 4″ × 4″ (≈110 mm) |
| Heights | 6 ft (1830 mm) / 4 ft (1150 mm) |
| Core | HDPE-based wood-plastic composite |
| Outer shield | Surlyn co-extrusion (golf-ball resin) |
| Reinforcement | Patented anti-wobble plastic skeleton |
| Wind | 70+ mph when properly anchored |
| Colors | Teak, Dark Grey, Antique |
Each post kit ships with the sleeve, steel base, cap, structural inserts, L-brackets, and hardware. Everything a local crew needs to stand it up — in the box.
The Skin: 360° Co-Extruded WPC Fence Board
The boards are where privacy and looks come together — and where the weather hits hardest.
Our WPC fence board is a 180 mm × 24 mm profile wrapped in a 1 mm, 360° co-extrusion cap. Every face is sealed — front, back, and both edges.
That full wrap is why it shrugs off swelling, fading, and staining where a single-side capped board would let moisture creep in from behind. Full stop.
| WPC Fence Board | Spec |
|---|---|
| Board size | 180 mm × 24 mm |
| Cap layer | 1 mm, 360° co-extrusion |
| Composition | 60% wood fiber, 35% HDPE, 5% additives |
| Temp range | −30°C to 70°C |
| Certifications | FSC, SGS, 100% recyclable |
| Colors | Antique, Walnut, Teak, IPE, Dark Grey, Ashwood |
Post and board ship in the same Dark Grey, so the whole run reads as one clean surface — no mismatched frame fighting the panel.
Tested for the Tropics
Distributors and builders don’t take “weatherproof” on faith. They want numbers. Here are the ones that matter for a hot, wet, windy site:
| Property | Result | Why It Matters Here |
|---|---|---|
| Fire resistance | ASTM E84 Class A | Top flame-spread rating |
| Operating temp | −30°C to 70°C | Handles full tropical heat load |
| Flexural strength | 27.89 MPa | Resists bowing in wind |
| Wind (post, anchored) | 70+ mph | Open Pacific gusts |
| Wind (panel test) | Intertek Beaufort 9 | Independently verified |
| Chemical safety | REACH pass | Import-compliant |
Add the 360° cap — waterproof, mold-proof, insect-proof, UV-stable — and you have a fence that treats salt air as a non-event.
Installing on a Hillside That Won't Sit Still
Flat ground is a luxury this site didn’t have.
The fence line climbs and curves along the contour, so the local crew stepped the panels — each bay set level, dropping a fixed increment to the next as the grade falls.
The modular post-and-board design makes that straightforward: boards slide into the post channels, and the system handles slopes up to 45° plus multi-angle corners.
Stepped bays follow the grade — each panel level, the line stepping down the slope.Posts were anchored on their steel bases — the right move for both the slope and the wind load off open Pacific terrain. Because the kit ships complete and color-matched, a local contractor can build it without specialist tooling or back-and-forth with the factory.
Want the full method? Our installation guide for slopes and uneven ground covers stepping vs. raking, footing depth, and spacing.
Who We Supply — Factory-Direct
This project is a small order doing a big job. It also shows how we work: factory-direct, no middleman.
That model serves three kinds of buyers:
- Distributors & resellers — wholesale pricing, container loads, OEM / private-label options.
- Contractors & installers — complete, color-matched kits that go up fast with standard tools.
- Project buyers — single-site supply for residential, commercial, or remote-market jobs.
Because everything ships in the box and the boards self-align, the supplier doesn’t need to be on site. That’s exactly what makes a remote market like French Polynesia workable.
Sourcing for resale or a project? Our composite fence range lists every profile, and our manufacturer sourcing guide covers MOQ, lead times, and what to ask before you commit.
The Result: 28 Sets, One Clean Line
Finished, the fence does exactly what the customer needed — full privacy, a modern Dark Grey face, and a profile that holds up to the island climate.
Backed by a 20-year residential / 15-year commercial warranty and a 25+ year design lifespan, this is a fence the owner can forget about — which, on a remote island, is the whole point. That’s it.
Playbook: Sourcing a Composite Fence for a Tough Climate
Buying for a humid, high-UV, windy site — or for resale into one? Use this checklist before you order.
- Demand 360° co-extrusion on boards — a single-side cap leaves the back open to moisture.
- Choose solid-core WPC posts over hollow — internal reinforcement resists flex under wind.
- Check certifications — ISO 9001, ASTM E84, REACH and SGS/Intertek reports clear customs and reassure buyers.
- Confirm complete kits — color-matched post, board, brackets, base and cap, so a local crew can install without you.
- Leave expansion gaps — composite moves with temperature; honor the spec’d clearances.
- Plan slopes early — decide stepped vs. raked panels before posts go in.
Get those six right and a composite fence will outlive most things on the property. New to the category? Start with our pillar guide: what is composite fencing.
Next Steps
This French Polynesia project is proof that a co-extruded post-and-board system belongs in the harshest climates — and that factory-direct supply reaches even the most remote markets.
If you’re sourcing for an island, coastal, or high-wind site — for a single project or for resale — the playbook above is your shortcut. Match it to our composite fence range and you’re most of the way there.
Have a tricky site or a wholesale enquiry? Let’s talk through it.
Frequently Asked Questions
Yes. As a factory-direct manufacturer we supply distributors, contractors, and resellers with wholesale pricing, container loads, and OEM / private-label options. Ask us for MOQ and lead times.
We ship roughly 2,100 containers a year to 50+ countries, including remote markets like French Polynesia. Kits arrive complete and color-matched, so a local crew can install without the supplier on site.
We offer both, so it comes down to cost and color. Aluminum prices are high and China removed its 13% export tax rebate on aluminum (effective December 2024), so aluminum posts now land more expensively. A co-extruded WPC post avoids that swing and is color-matched to the boards — while still rated for 70+ mph winds when anchored. Aluminum remains available if you prefer it.
The 1 mm, 360° cap seals every face of the board, so it stays waterproof — no swelling, cracking, rot, mold, or insect damage in humid coastal air.
The Surlyn co-extrusion shell over the WPC core is engineered for UV stability, so the post resists fading and color loss even under year-round equatorial sun.
Yes. The modular system supports slopes up to 45°, multi-angle corners, and stepped bays — exactly how this French Polynesia hillside was done.
The order was 28 sets of Dark Grey co-extruded post and board, shipped August 2025. It carries a 20-year residential / 15-year commercial warranty and a 25+ year design lifespan.
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Sourcing Composite Fence for a Tough Climate — or for Resale?
Our factory-direct composite fence systems are built to survive UV, salt air, humidity, and wind — with wholesale pricing, container loads, and OEM options for distributors and contractors worldwide. Get spec sheets, certifications, and a project or wholesale quote.
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