Low-profile decking is built close to existing surfaces – like concrete slabs, old pavers, gravel, compacted sand, and soil. Many homeowners look to low-profile decks to make their outdoor areas more attractive (such as hiding paving decisions from previous owners or simply creating a more modern, accessible location for the family). They’re cost-effective, usually less disruptive, and often don’t need handrails or other safety features as they are low to the ground.

However, building a low-profile timber deck in Australia comes with some risks. Timber is susceptible to moisture, not to mention pests, and needs more maintenance than you might think. Options like DeckCell offer greater durability, virtually no maintenance, and can be built much lower to the ground because of these features.

We’ve created a guide for decking DIYers, renovators and outdoor living upgraders to help you figure out the essential parts – where to build, material considerations, and how to create your own low-profile decking platform.

Choosing where to build your low-profile deck

The beauty of low-profile decking is that you can make the most of what you already have – working smarter, not harder! Low-profile decks are primarily built to match and enhance your existing space, whether you’re building over:

• Concrete foundations / slab
• Tiles or pavers
• Compacted sand or gravel
• Soil or grass (check your soil type for best results – loose or sandy soil may need extra prep as it’s less stable)

You can build a low-profile deck just about anywhere – as long as it’s level, solid and drains well. You can attach it to the house or existing structures, or even build a floating deck wherever you want to spend time in your outdoor living space.

Choosing materials for building a deck

Aluminium frame systems

Aluminium subframes are popular, but they’re not always ideal for low-profile builds. They typically require greater height, specialist metal-cutting tools, and the difficulty of creating a perfectly level surface and installing correctly is exponentially greater than with DeckCell. Aluminium can also expand and contract with heat, which may lead to movement or creaking over time, and although it is often highly resistant compared to other metals, it can also be prone to corrosion.

DeckCell avoids these issues entirely. Most importantly, it achieves a much lower minimum build height than aluminium systems, making it the smarter option for tight spaces, patio resurfacing, and threshold areas where every bit of space counts.

What about a low timber deck?

This might be the first material you think of when you think “decking project” – but we suggest thinking twice. Wood decking requires a minimum build height of 150mm to allow for ventilation and slow premature rotting and warping. For timber decks designed to last 25+ years, the Building Code of Australia (BCA) recommends a minimum clearance of 450 mm under the bearers.

If using timber, avoid building with low clearance over bare soil where damp can quickly become a problem. You’ll also need to prioritise ventilation and drainage to prevent rot, mould or mildew (especially if the area doesn’t get full sun). 

If you live in a termite-prone area, you’ll need to utilise special treatments for the timber and keep the wood out of contact with soil, e.g. by using metal stirrups. You will also need to check the decking regularly, so build with access for inspections in mind. Preventing water pooling is essential here.

Timber framing might be cheaper to start, but you have to think of the lifetime cost of the project – wood just won’t last as long in this kind of application. You need something designed and tested to withstand weight, rising damp, pests, and the elements – something like DeckCell.

Why choose DeckCell for your low-profile deck?

DeckCell, used with NexGEN’s PermaTech® composite decking boards, eliminates many pain points with low-profile decking.

No warping, splintering or rotting

Low-profile decks get damp. DeckCell will never rot, rust or degrade in any way. Your finished deck will have all the beauty of wood without any of the hassle. It’s more durable than even the best hardwood decking, designed to stand the test of time in Australia’s harsh weather and UV levels.

No expensive trades (labour costs) required

DeckCell is great for DIY. The subframe panels are modular and straightforward, much like Lego. It’s fast and easy to click the panels together, and if you have any trouble, you can call our friendly team for advice—no need to get any tradies in.

No need for specialist tools or equipment

You can cut and trim DeckCell subframe panels with standard tools, allowing you to customise your space without the usual headaches. The system comes with almost everything you need for installation. You don’t even need nails. You’ll only need to source:

• A circular saw or jigsaw
• Battery-powered or electric drill (and drill bits)
• Measuring tape
• A rubber mallet

It’s the super low-profile decking option.

Because of the subframe’s durability and modularity, DeckCell has a minimum clearance of just 50mm – making it easier to add over existing structures like pavers and requiring less work to prepare for the project.

Choice of beautiful timber composite decking boards

DeckCell is designed for use with NexGEN PermaTech® composite decking boards, which are perfect for outdoor use with popular shades like spotted gum, blackbutt, and white oak (among others).

6 Steps to DIY with DeckCell

DeckCell is basically a cheat code for creating durable and beautiful low-profile decks, fast and fuss-free. There’s no need for complicated landscaping like setting up concrete footings for joists; you can start and finish your project quickly with a great result.

1. Plan and mark out your deck area, so you can be sure you have enough space for what you want to do – and that you’re ordering the right amount of DeckCell and NexGEN composite wood boards. You can even send NexGEN your measurements and plans, and we’ll provide the complete kit you need.
2. Start at the edge furthest from your house, so any pieces that need to be cut will be against the building. Look for where the DeckCell panels will interlock and use your rubber mallet to make sure they have a solid, level connection – you want to be sure they’re not going to move around, as this is the base of your deck.
3. Once you have laid out the completed mat, you can measure and make any trimmings to achieve a better fit against your existing structure. You can measure and mark these, then trim with your saw to fit. Keep the offcuts in case you need them later.
4. When you’re happy with the subframe layout, lock it in with the Poly Joists. Feed one length of Poly Joist through the DeckCell at 500mm or 600mm spacings; they can be butted together if the deck is more than 3m long. Trim off any excess with your saw once you have these fitted snugly.
5. Once your frame is in, you can lay down the boards. You’ll need to face-fix the first boards (starter boards) and the last ones; the rest will be installed with the hidden fastening system.
6. Place and secure your fascia boards (square-edge boards, not grooved boards). These will cap and cover your outside edges for a flawless finish.

That’s it! You can now enjoy your new deck. There’s no need for staining, painting, or any other finishing touches.

Enjoy peace of mind with DeckCell.

Using DeckCell as your subframe is the wise choice – it’s essentially a set-and-forget product. There’s never any need to check for termites, mould, rust, or any other nasties that can show up and spoil outdoor living for you and your family.

Get the super-low profile deck you’ve been dreaming of, that your loved ones and friends can enjoy for a lifetime. Why not contact NexGEN today to find out more about our DeckCell decking system?