Modular Floating Pontoon Cubes
HDPE Cubes from $99 · Swim Platforms, Jetties & Kits
DIY docks Australia
Why Aussie Dock
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5-year UV warranty
HDPE cubes built for Australian sun and salt.
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Tool-free pins
Mushroom centre pins lock cubes together on the water.
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Any shape
Swim platform, jet ski dock, or a full pontoon walkway.
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Start here
Cubes
Modular HDPE floating pontoon cubes for DIY jetties, marina walkways, boat docks, and swim platforms.
The standard grey cube is 500 × 500 × 400 mm and Four cubes make 1 m² of deck.
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Aussie Storage Cube
A hinged storage cube keeps lines, pins, and small fenders on the dock instead of in the boat. Same 500 × 500 mm grey HDPE footprint as a standard Aussie Cube, so it drops into any layout. $249 AUD. Use one on a swim platform or at the shore end of a residential pontoon. 5-year UV warranty. Shipping calculated at checkout (Standard & Express). Free Standard Sydney Metro on 16+ cubes only; smaller orders use the shipping calculator.Regular price $249Regular priceSale price $249 -
Aussie Triangle Cube
Round off a swim-out or soften a jetty corner with the triangle cube. It pins to standard 500 × 500 Aussie Cubes so you can build an irregular floating dock without leaving a square bite out of the water. $135 AUD. Grey HDPE, same 400 mm height as the rest of the system. Handy on swim platforms, residential pontoons, and the water edge of a DIY jetty. Pins to standard Aussie Cubes 5-year UV warranty Shipping calculated at checkout (Standard & Express). Free Standard delivery Sydney Metro on 16+ cubes only; shipping calculator for estimatesRegular price $135Regular priceSale price $135 -
Aussie Cube — Double
Walkways go down quicker with a double cube. Each module is 1000 × 500 × 400 mm of UV-stabilised HDPE — twice the length of a standard Aussie Cube — and it locks in with the same mushroom centre pins. No tools, no aluminium frame, no timber deck to seal. Use doubles for marina walkways, a gangway onto a jetty, and long residential pontoons where you want fewer joins. Mix them with 500 × 500 cubes, triangles, and pile cubes when the layout turns a corner. 1000 × 500 × 400 mm grey HDPE $190 AUD Same pin system as the standard cube 5-year UV warranty Shipping calculated at checkout (Standard & Express). Free Standard delivery Sydney Metro on 16+ cubes only; shipping calculator for estimatesRegular price $190Regular priceSale price $190 -
Aussie Pile Cube
Hold a floating pontoon in still water with a pile cube. The inner opening takes a post so the dock can rise and fall without wandering off the bank. $279 AUD. Same 500 × 500 footprint and mushroom-pin lugs as a standard cube, so it sits in the grid of a DIY jetty or marina walkway. Suits lakes, canals, and sheltered rivers — pair it with extra ties if the site has wash. Inner pile / post guide 5-year UV warranty Shipping calculated at checkout (Standard & Express). Free Standard delivery Sydney Metro on 16+ cubes only; shipping calculator for estimatesRegular price $279Regular priceSale price $279 -
Aussie Cube — Standard Grey
Build a jetty, pontoon, or swim platform in whatever shape you need. Each Aussie Cube is a 500 × 500 × 400 mm grey HDPE module with a non-slip deck. Cubes lock together with mushroom pins. No tools. Reconfigure later. This is a modular cube dock, not an aluminium-frame timber pontoon. Four cubes make 1 m² of floating deck. Lay them on the bank, pin the corners, and launch. Use them for residential jetties, boat and jet ski platforms, marina walkways, and work pontoons. Specs Size 500 × 500 × 400 mm Weight About 7 kg Buoyancy About 350 kg/m² (four cubes per m²) Material UV-stabilised recyclable HDPE Assembly Mushroom centre pin, tool-free Warranty 5-year UV Delivery Shipping calculated at checkout (Standard & Express). Free Standard Sydney Metro on 16+ cubes (e.g. Swim Platform Kit). Smaller orders & Express via shipping calculator / checkout Pins: Kits include locking pins. Ordering loose cubes for a DIY build? Contact us or call Brenden on 0402 426 847 for pin packs — pins are not currently sold solo. Order one cube to start a DIY pontoon, or jump to a kit if you already know the size. Need a layout? Use the build a dock calculator or call Brenden on 0402 426 847.Regular price $99Regular priceSale price $99
Ready-made kits
Skip the counting. These kits bundle HDPE pontoon cubes, mushroom pins, and hardware so you can build a floating dock on the bank and launch it the same day.
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Swim Platform Kit — 16 Cube (2 m × 2 m)
A ready DIY swim platform: 16 standard grey Aussie Cubes making 2 m × 2 m of floating deck, plus the mushroom pins to lock them. Assemble on the bank, launch, and swim. $1,699 AUD. About 4 m² of HDPE pontoon — four cubes per square metre — with roughly 350 kg/m² of buoyancy. Add a ladder, triangles, or more cubes later if you want a bigger deck. Shipping calculated at checkout (Standard & Express). Free Standard delivery Sydney Metro (this kit is 16+ cubes). Express and outside Sydney: use the shipping calculator for estimates. Call Brenden on 0402 426 847 if you would rather size a custom layout in the dock calculator.Regular price $1,699Regular priceSale price $1,699 -
Pontoon Kit — 32 Cube (4 m × 2 m)
A family pontoon in one kit: 32 standard grey cubes covering about 4 m × 2 m, with pins and edge hardware. That is a DIY floating dock you can live on — fish, board a tinnie, or sit in the sun — without welding an aluminium frame. $3,199 AUD. Eight square metres of HDPE deck. Grow it later with extra cubes, a pile cube, or a gangway onto the bank. Shipping calculated at checkout (Standard & Express). Free Standard delivery Sydney Metro (this kit is 16+ cubes). Express and outside Sydney: use the shipping calculator for estimates. Call Brenden on 0402 426 847 if you need a longer jetty layout.Regular price $3,199Regular priceSale price $3,199
How it works
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1. Lay the cubes
Float the 500 × 500 mm HDPE cubes on the water in your layout . Swim platform, walkway, or jet ski dock.
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2. Pin them together
Kits include mushroom centre pins to lock cubes tool-free.
Building from loose cubes? Call Brenden for pin packs
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3. Bolt the edges
Finish the perimeter hardware.
Ready for a swim platform or a custom jet ski dock
Request a custom quote
Modular pontoons for Australian waterfronts
Aussie Dock is an Australian supplier of modular HDPE floating pontoon cubes for DIY jetties, swim platforms, boat docks and marina walkways. Based in Box Hill, NSW, we ship Australia-wide and specialise in Sydney Harbour, Northern Beaches and Hawkesbury waterfronts.