It's the question I get on almost every exterior quote from Coogee to Bondi: "How long will it last?" The paint tins say 10, 15, even 20 years. The honest answer from two decades of coming back to the same streets is that it depends far more on where the house is, what it's made of and how it was prepared than on what the tin says. Here are the real numbers, and what actually decides which end of the range you get.
The honest table
These are the intervals we see between repaints on work that was done properly — premium acrylic system, correct primer, two full topcoats over sound preparation. They assume nothing has been washed or touched up in between, which is what most people do.
| Exposure | Render / masonry | Weatherboard / timber | Windows, doors & trim |
|---|---|---|---|
| Front row — direct onshore salt, within a couple of hundred metres of the surf (Arden St Coogee, Campbell Pde Bondi, Marine Pde Maroubra) | 6–8 years | 5–7 years | 4–6 years |
| Second band — a few streets back, still gets the salt haze and the wind | 8–10 years | 7–10 years | 6–8 years |
| Inland — a kilometre or more back (Randwick, Kensington, Queens Park, Paddington) | 10–12+ years | 10–12 years | 7–10 years |
Two things jump out. First, the same house has different lifespans on different walls — the ocean-facing elevation of a Maroubra home might need attention at year six while the sheltered side is fine at ten. Second, the small stuff fails first: sills, the bottom edge of every weatherboard, the tops of handrails, and the gloss on window frames all go before the walls do.
Why the coast shortens everything
Salt
Salt is the big one and it is not just cosmetic. It is hygroscopic — it pulls moisture out of the air and holds it against the paint film — so a salt-coated wall is effectively damp all the time, and that moisture works its way in at every edge and crack. It also attacks any metal it can reach: nail heads, gutter brackets, window hardware, balustrade fixings, all of which then rust-stain through the finish.
UV
Sydney sun breaks down the binder that holds the paint together. On north and west walls the result is chalking — that white powder on your hand when you run it across the wall — followed by fading and, eventually, a surface that no longer sheds water. Dark colours show it first because there is more pigment to fade.
Wind-driven moisture and thermal movement
Onshore wind pushes rain and salt haze into places roof overhangs would normally protect. Then the coast gives you big daily temperature swings — a west wall that is cold at dawn and hot enough to be uncomfortable to touch by mid-afternoon — which means the substrate is constantly expanding and contracting under the coating. Timber moves most, which is why weatherboard and trim have the shortest lives.
The shaded south side
The wall that never sees the sun has the opposite problem: it stays damp, grows mould and lichen, and the film degrades from underneath. Different failure, similar timeline.
What decides whether you get five years or ten
The exposure sets the range. These decide where in it you land, in order of importance:
- Preparation. Paint over salt, chalk or loose old coats has nothing to hold on to, and near the water it lets go within a couple of winters. Washing to a sound surface, scraping back to firm edges and sanding is most of the job. This is the difference between two years and ten, and it is where cheap quotes save their money. Our surface preparation page explains what "prepared" should mean.
- Primer. Bare timber, bare render, rusty metal and chalky old paint all need the correct primer, and they are four different products. No primer, or the wrong one, and the topcoat is only as good as whatever it is sitting on.
- Two full coats. Film thickness is what stands between the weather and your walls. One coat "plus touch-ups" is the most common way a quote gets cheap, and it roughly halves the life of the job.
- Product grade. A premium 100% acrylic exterior system — we use Dulux Weathershield — stays flexible and sheds water for years longer than a budget exterior paint. Our coastal paint guide goes through what survives here and what doesn't.
- Colour. Light and mid-tones last longest. Very dark full-body colours on exposed coastal walls run hotter, move more and fade faster — dark trim on a light body is the sensible compromise.
- Maintenance. The one you control after we leave. See below.
The signs it's time — and when it's just time for a wash
| What you see | What it means | What to do |
|---|---|---|
| White powder on your hand from the wall | Chalking — the binder is breaking down | Light chalking: wash. Heavy chalking that comes back: repaint that elevation within a year or two |
| Colour noticeably faded on north/west walls | UV wear, usually with chalking | Cosmetic until it chalks heavily; plan a repaint |
| Fine cracking like a dry riverbed | Film has lost flexibility | Repaint — water is getting through those cracks |
| Peeling or flaking, especially at edges and sills | Adhesion gone; water under the film | Repaint soon, with proper prep. Do not paint over it |
| Blistering | Moisture or heat trapped under the coating | Find the water source first, then repaint |
| Rust stains bleeding through | Salt has reached the fixings | Treat and seal the metal, spot-prime, recoat |
| Green or black growth on the south wall | Mould and lichen holding moisture | Treat and wash; if the film underneath is sound, no repaint needed |
| Grey, weathered bare timber | Timber has been unprotected for a while | Sand back to sound fibres, prime, two coats — sooner rather than later |
Dirty and dull is not the same as failed. A surprising number of "we need to repaint" calls we go to are a sound paint film under a year of salt and grime, and a proper wash buys them another two or three years. We'll tell you which one you've got.
The maintenance that adds years
- Hose the salt off. A gentle fresh-water rinse of exposed walls, eaves, sills and railings once or twice a year — after a stretch of onshore weather is ideal. On a beachfront home this alone is typically the difference between five years and seven.
- Touch up chips before winter. Anywhere the film is broken, water reaches the substrate and the failure spreads from there. A small tin of the original colour and half an hour in April is worth a lot.
- Keep gutters clear and plants off the walls. Overflowing gutters soak the wall below them; vegetation holds moisture against the paint and hides problems.
- Recoat the exposed elevation early. If the ocean-facing wall is going at year six, repaint that wall. Waiting until the whole house needs it means the exposed side has gone to bare timber by the time you do.
- Decks and horizontal timber are a different clock — see our deck restoration guide; they need attention every 1–3 years regardless of how good the walls look.
What a 5-year guarantee actually covers
Every Proview job comes with a written 5-year workmanship guarantee, and it is worth understanding what that phrase means from any painter. A workmanship guarantee covers failures caused by the application: peeling, flaking, blistering or loss of adhesion because the preparation, priming or coating was not done properly. If a wall we painted is peeling at year three, that is on us and we fix it.
It does not cover fair wear — gradual fading and light chalking on a west-facing wall in year four is the sun doing what the sun does. It does not cover water getting into the building through a failed roof, gutter or window, or the building moving and cracking the render. And it cannot cover surfaces that were excluded from the scope to save money. Get the guarantee in writing, check that it names the exclusions, and treat "lifetime guarantee" on a business that has existed for two years with the scepticism it deserves. Our guide to comparing painting quotes covers the other red flags.
A note on selling
If the exterior is at year seven or eight on the coast and you are thinking of selling in the next couple of years, repaint before the campaign photos rather than after the building inspection. A fresh exterior is one of the few pre-sale spends that reliably returns more than it costs — there is more in our pre-sale painting guide. And if you have a weatherboard home, the timber-specific version of everything above is in painting a weatherboard house near the coast.
Frequently asked questions
How often should you repaint a house near the beach?
On a properly prepared premium job, every 5–7 years on elevations that take direct onshore salt, every 7–10 years a few streets back, and every 10–12 years or more once you are a kilometre or so inland. The most exposed wall usually needs attention before the rest of the house, so it is common to repaint one elevation early rather than the whole home.
Why is my exterior paint peeling after only two years?
Almost always preparation. Paint applied over salt, chalk or loose old coats has nothing to grip, and near the coast it lets go within one or two winters. The other common causes are a single thin topcoat instead of two, no primer on bare timber, and painting boards that were still damp after washing. A failure that fast is not the paint's fault and is not fair wear — a written workmanship guarantee should cover it.
Does the colour affect how long exterior paint lasts?
Yes. Dark colours absorb more heat, so the surface expands and contracts more and the coating is worked harder, and they show fading sooner because there is more pigment to fade. Light and mid-tone colours generally last longest on coastal exteriors. Dark trim on a light body — the popular Eastern Suburbs look — is a good compromise, because the dark areas are small and easy to recoat.
Does washing the house really make the paint last longer?
It is the single cheapest thing you can do. Salt is hygroscopic — it pulls moisture out of the air and holds it against the paint film, which is how it works its way under the coating. A gentle fresh-water hose-down of the exposed walls, eaves and window sills once or twice a year removes it, and on a beachfront home that is typically the difference between five years and seven.
What does a 5-year painting guarantee actually cover?
A workmanship guarantee covers failures caused by the application — peeling, flaking, blistering or loss of adhesion where the preparation or coating was not done properly. It does not cover fair wear such as gradual fading or chalking on sun-facing walls, damage from movement or water entry in the building, or surfaces that were excluded from the scope. Ask for it in writing and check it says what is excluded.