Ten years. That’s the number most people have picked up from somewhere, and it’s not wrong so much as it’s an average with the detail sanded off. A weatherboard villa in Grey Lynn facing hard into the west sun and a rendered townhouse in Flat Bush that gets shade most of the afternoon were never going to wear their paint out on the same clock, even if a painter did both jobs the same month.
The honest answer depends on what the house is clad in, which way it faces, how close it sits to the coast, and what went on it last time. Here’s how we work it out on site.
Timber weatherboard is the shortest cycle of the common claddings, generally seven to ten years, and closer to five to seven where a house catches full sun most of the day or sits somewhere exposed and windy. Fibre cement holds on longer, usually eight to twelve years, because it doesn’t move with moisture the way timber does. Painted brick and rendered or plaster finishes sit in a similar eight to twelve year range, though render tends to show hairline cracking well before the paint film itself gives up.
None of those numbers are fixed. They’re a starting point, and every house we quote moves up or down that scale once we’ve looked at it properly.
A north or west facing wall takes the harshest UV and the most direct heat, and it’s almost always the first part of a house to chalk and fade. South facing walls fare differently again. They see less sun but hold onto moisture longer after rain, which is why they’re more prone to mould and green staining even though the paint film itself might still be sound. We’ve had houses where the sunny gable needed attention two or three years before the shaded side of the same building, painted the same week by the same crew.
Corners and any wall that catches wind driven rain wear differently again, particularly where an eave is shallow and offers no protection at all. It’s rarely one number for a whole house. It’s usually two or three, depending on which wall you’re standing in front of.
Anywhere within a few streets of the water, from the west coast surf beaches to the harbour edges around Auckland’s eastern bays, salt carried on the wind gets into the paint film and speeds up breakdown regardless of how good the coating is. Metal fixings corrode faster too, and once a nail head or a flashing starts rusting through the paint, that rust stain works its way outward long before the surrounding coating would otherwise be due. Houses in those spots often sit at the shorter end of every range above, and we build that into the recommendation rather than quoting the generic figure and letting the client find out the hard way three years later.
A two coat system applied over properly prepared, primed surfaces holds up noticeably longer than a single heavy coat rushed over old paint. Cheaper paint, thin application, or skipped preparation can cut years off any of the ranges above, no matter how sheltered the house is. When we quote exterior painting in Auckland, the preparation and product line items are usually where the difference between a seven year repaint and a twelve year one sits.
How many layers are already on the wall matters too. A house that’s been painted five or six times without ever being stripped back carries a lot of built up film, and that thickness eventually starts cracking and lifting on its own regardless of what the newest coat is made of.
Interior surfaces don’t face any of this. No UV, no driving rain, no salt air, which is why interior painting in Auckland runs on a completely different and generally longer clock than anything outside the house.
Chalking dust that comes off on your hand when you run it down a wall, hairline cracks fanning out from window and door corners, and joinery that’s gone soft or spongy under a fingernail are usually the clearest tells that a wall is done regardless of what the calendar says. Those are the same handful of signs your home needs a fresh coat of paint that show up just as reliably at year four on an exposed coastal wall as they do at year eleven on a sheltered one, which is why we’d rather look at the wall than ask how long ago it was last done.
Averages are a reasonable starting point for budgeting, but they’re not a substitute for someone looking at your specific cladding, orientation and coastal exposure. If it’s been a while since your exterior was assessed properly, get in touch with our team and we’ll give you a realistic window based on what your house is dealing with, not a generic figure pulled from an average.
