Seaboard® Marine Board & Boat Board
Saltwater · UV stable
±0.1mm
Precision Tolerance
35+ Years
On The Gold Coast
Full Range
Perspex, HDPE & More
Australia-Wide
Fast Delivery
Seaboard® is a marine-grade HDPE sheet — the original boat board and the Australian boat-builder's standard for bait boards, hatches, livewell lids, transoms, gunwale trim, rod holders, helm consoles and cabinetry. Holland Plastics stocks the full Seaboard® range on the Gold Coast in marine white, light grey, dove grey, black, sand and seafoam, cut to size while you wait.
Whenever you're building anything from a boat to outdoor furniture, the marine plastic board you choose matters. Seaboard® won't rot, splinter, delaminate, swell or corrode — and unlike marine plywood, it never needs painting, sealing or sanding back. The textured matt finish hides scratches and grips wet feet, making it the go-to material for fishing boats, cruisers, jet skis, pontoons, charter boats and houseboats up and down the east coast.
⚙Technical Specifications
Quick Facts
- ✓ Over 35 years experience
- ✓ No minimum order
- ✓ Fast turnaround
- ✓ Australia-wide delivery
Available Sizes & Colours
| Thickness | Sheet Size | Standard Colours |
|---|---|---|
| 6mm | 2440 × 1220mm | White, Light Grey, Dove Grey, Black |
| 9mm | 2440 × 1220mm | White, Light Grey, Dove Grey, Black, Sand |
| 12mm | 2440 × 1220mm | White, Light Grey, Dove Grey, Black, Sand, Seafoam |
| 15mm | 2440 × 1220mm | White, Light Grey, Black |
| 19mm | 2440 × 1220mm | White, Light Grey, Black |
| 25mm | 2440 × 1220mm (indent) | White, Light Grey, Black |
Cut-to-size service on all thicknesses. CNC routing, V-grooving and edge profiling available. Non-stock colours and thicknesses available on indent.
Marine Applications
Fabrication — Works Like Marine Plywood, Lasts Like Plastic
Seaboard® machines with standard woodworking tooling — you can saw it, drill it, route it, plane it, screw it and bond it just like timber, with no specialist equipment required. Unlike plywood, there's no end-grain to seal, no risk of rot at fastener holes, and no painting to maintain over the life of the boat.
Seaboard® vs Marine Plywood vs Standard HDPE
| Property | Seaboard® | Marine Plywood | Standard HDPE |
|---|---|---|---|
| Rot Resistance | Will not rot | Can rot at fasteners | Will not rot |
| UV Stability | Excellent (colour-through) | Needs paint/sealing | Black only |
| Maintenance | Zero | Annual sealing | Low |
| Surface Finish | Textured matt, factory | Bare timber, paintable | Smooth gloss |
| Stiffness | Superior | High | Moderate |
| Lifespan | 20+ years | 5–15 years | 10–15 years outdoor |
| Cost | $$$ | $$ | $ |
Beyond the Boat — Outdoor & Pool Uses
Seaboard® is just as at home around the pool, on the deck and in commercial outdoor kitchens as it is on the water. The same UV-stable, rot-proof, easy-clean properties that make it the boat-builder's first choice make it perfect for outdoor benchtops, pool equipment cabinets, playground panels, change-room cubicles, and any outdoor cabinetry that needs to last in Queensland weather.
Frequently Asked Questions
What's the difference between Seaboard® and standard HDPE?+
Is Seaboard® the same as King StarBoard®?+
Can I screw and glue Seaboard® like timber?+
Does Seaboard® need to be sealed or painted?+
What thickness do I need for a bait board?+
Get a Quote on Seaboard® Marine Board & Boat Board
Send us your specs, drawings or rough idea — our Gold Coast workshop will reply within one business day.
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Get a free, no-obligation quote on Seaboard® Marine Board & Boat Board from single pieces to full production runs.