Powder-coated aluminium has become the default material for Australian outdoor furniture, and for good reason. Aluminium does not rust, and the powder coat gives it a tough coloured skin that handles weather far better than ordinary paint. It is genuinely low maintenance. But low maintenance is not no maintenance. A dulling, chalky or spotted finish is almost always a cleaning story, not a quality one. Here is the simple routine that keeps the finish looking close to new for years.
First, what powder coating actually is
Powder coating is a dry powder applied to the bare aluminium and then baked on in an oven, where it fuses into a hard, even film. Think of it as paint's tougher sibling. There are no brush marks, no drips and no solvent to evaporate, which is why the finish feels so uniform.
Tough is not invincible though. The coating can be scratched by abrasives, stained by things left sitting on it and slowly dulled by a build-up of salt, sunscreen, bird droppings and general grime. Everything in this guide comes down to one idea. Protect that coating, because it is what protects the metal underneath.
The basic wash: warm water and dish soap
Here is the whole method. Mix a squirt of mild dishwashing liquid into a bucket of warm water. Wipe the furniture down with a soft cloth or sponge. Rinse with clean water from the hose. Dry with a towel or chamois, or let it air dry on a warm day.
That is it. No special products needed. The rinse step matters more than people think, because soap residue left to bake on in the sun can leave its own film. The drying step matters in hard water areas, where evaporating droplets leave mineral spots on dark colours.
Get into the corners and undersides where spiders set up and dirt collects, and check the feet while you are down there. Grit trapped under a foot glide scratches both the coating and your deck. If a glide is worn through or missing, our guide to chair leg protectors for decks and tiles covers what to fit in its place.
What never to touch it with
Most powder coat damage we hear about was done during cleaning, not by weather. Avoid these:
- Abrasives. Steel wool, scourers, stiff brushes and cutting compounds all scratch the finish. Once scratched, the coating loses its sheen and grime grips faster.
- Harsh chemicals. Solvents, thinners, petrol and strong alkaline cleaners can soften or stain the coating. Bleach-heavy mould killers can discolour it, especially on darker shades.
- Pressure washers up close. A gentle rinse from a distance is fine. A concentrated jet can drive water into joins and lift coating at any weak point or chip.
For a stubborn mark, patience beats power. Let soapy water sit on the spot for a few minutes and go again with the soft cloth. Repeat rather than reach for something stronger.
Coastal homes: same routine, more often
Salt is the one thing that changes the schedule. Airborne salt settles on furniture within a few kilometres of the coast, and it is mildly corrosive to almost everything it lands on, coating included. It also attracts moisture, so the surface stays damp longer.
The furniture itself is well suited to the coast, since aluminium does not rust the way steel does. It just needs the salt film rinsed off regularly. Near the beach, a quick freshwater rinse every couple of weeks is a better rhythm than a big clean twice a year. It takes five minutes with a hose and it is the single best thing a coastal owner can do.
Between cleans: small habits that protect the finish
A few low-effort habits keep the coating in top shape between proper washes.
Deal with droppings and spills quickly. Bird droppings are acidic and leave etched marks if they sit for weeks. Sunscreen is another quiet offender, so give arm rests an extra wipe in summer.
Use covers in the off season. If the furniture sits unused through winter, a fitted cover keeps the grime, salt and sun off entirely. Make sure everything is clean and dry before covering, and pick a cover with vents so moisture is not trapped underneath. Our outdoor furniture covers range covers most common shapes.
Touch up chips. If the coating gets chipped down to bare metal, a dab of matching touch-up paint keeps moisture out of the edge of the coating. Your furniture supplier can usually point you to a close colour match.
How often is often enough?
For most homes, a proper wash every couple of months and a quick wipe-down when you notice grime is plenty. Coastal homes should rinse fortnightly. Under trees or near a barbecue, let the furniture itself tell you, since sap, smoke film and pollen all announce themselves.
Powder-coated aluminium rewards this small effort more than almost any other material. There is no oiling, no rust treatment and no sanding, just soap, water and the occasional ten minutes. If you are weighing up furniture that fits this easy-care picture, our outdoor tables and chairs and full outdoor dining settings are largely built on exactly this construction.
