The short answer
In Perth's climate, most homes need an exterior repaint every 5 to 10 years. Walls that cop the most sun, and timber surfaces, often need attention sooner. Keeping on top of it protects your home and saves money compared with letting the surfaces deteriorate.
How long paint lasts by surface
- Timber weatherboards: around 4 to 7 years, because timber expands and contracts with temperature changes.
- Brick and render: around 8 to 12 years, as they absorb less moisture.
- Metal (gutters, fences, fascias): around 5 to 8 years before fading or rust appears.
- Interiors: generally last longer, often 7 to 10 years, since they are not exposed to the weather.
Why Perth's climate is hard on paint
A few things wear exterior paint down faster here than in milder climates:
- Strong UV and heat: hot, dry summers break down paint pigment and finish, especially on north and west-facing walls.
- Coastal salt air: salt spray embeds in coatings and speeds up corrosion on metal.
- Winter rain and humidity: encourage mould, mildew and paint lift.
Signs it is time to repaint
- Fading, dull or chalky colour
- Flaking, peeling or bubbling paint
- Cracking or gaps opening around joints and trims
- Mould or mildew, particularly in shaded or damp areas
- Bare or weathered timber showing through
If you are seeing these, especially on the sunny side of the house, it is worth getting a quote before small problems turn into bigger repairs.
The best time of year to paint in Perth
Spring is usually the sweet spot, with mild temperatures, longer days and lower humidity than the peak of summer. Autumn is also a good window. For exterior work we plan around dry, settled weather so each coat cures properly and the finish lasts.