
Composite decking in Australian heat and UV
Capped boards have improved on first-generation wood-plastic composites, but Australian heat, UV, expansion and tropical mould still decide whether a composite deck is a relief or a regret.
An Australian outdoor living journal
Est. in the spirit of 1984, Burleigh Heads
Vol. 1 · Outdoor living
The original Designer Decks was a Queensland outdoor-construction practice, established in 1984 at Burleigh Heads, building decks, patios, pergolas and outdoor rooms. This journal continues that subject in editorial form. We write for owners, designers and builders who want a deck that lasts in this weather, not a catalogue picture.
Featured essay

Capped boards have improved on first-generation wood-plastic composites, but Australian heat, UV, expansion and tropical mould still decide whether a composite deck is a relief or a regret.
Timber, composite and finish
Australian hardwoods, treated pine, composite boards, fasteners and the finishes that keep a deck honest.
Plan, proportion and climate
Sloping blocks, indoor-outdoor rooms, coastal detailing, small lots, shade, privacy and light.
Structure, approvals and risk
Council, BAL ratings, termites, structure, pool decks, stairs and the National Construction Code.
Maintenance and restoration
Oiling, cleaning, mould, when to restore and when a deck has done its time.
Rooms without walls
Kitchens, pergolas, fire, planting and the way a deck is actually used after the builder leaves.

Ember attack finds the gaps first. A BAL rating is not a timber brochure — it is a construction problem under AS 3959, and the smart work is in the subfloor, the junctions and the discipline of what you leave open to the wind.

Care/
Grey hardwood is not always a failure. It is often just a deck that has met the sun. Restoration is a sequence — assess, strip or sand, repair, oil — and a judgement about when the boards have already done their time.

The best Australian outdoor rooms do not begin at the furniture. They begin at the kitchen threshold — floor levels, stacking doors, insects, winter sun and the extra step of the working triangle that lands outside.
The backyard, properly
Designer Decks publishes reported, practical essays on outdoor construction in Australia. We are independent of any single yard, mill or franchise. If you build or specify decks, read the guest essay guidelines or the house note.


Plants make a deck belong to a garden. They also lift boards, stain timber, and send roots toward a footing that was never a neighbour. Water-wise planting is not a style. It is roots versus structure, leaf versus finish, pots versus ground — chosen for this climate.

A deck fails first as a corridor. Dining, lounge and the path between the kitchen and the garden want to be zones, not a single beautiful clutter. Nine hundred millimetres is a useful heuristic for a person with a plate — not a code, and not a reason to starve the table.

The stair is how a deck meets the ground and how a household will age. Rise, going, landings, lighting and a true barrier are prescribed in the NCC — check the book, then design a descent people will still trust in twenty years.

Care/
After a wet summer the deck is a record of drip lines, shade and the tree you would not cut. Tannin, mildew and the green film of algae are different problems that like the same conditions. Clean them as chemistry and biology. Then dry the bay they came from.

A deck beside Australian water is a wet floor, a fence, and a chemical climate. Slip, heat, coping junctions and the pool-safety envelope matter more than the board you liked on a dry Saturday.

Heat makes a deck a winter room. It also makes a timber floor a poor place for an afterthought fire. Clearances, a masonry pad, gas versus wood, and the ordinary fact of bushfire season are design decisions, not props for a photograph.