How does global warming affect the exterior paint on the facade? According to the report released by the Bureau of Meteorology in February 2026, the year 2025 has been the fourth warmest in the history of Australia. Temperatures have been above the mean monthly average throughout the year in the country. The paint has to withstand those conditions continuously along with ultraviolet rays and sudden changes in temperature. An exterior repaint in Kew, a suburb where most of the façades come under heritage protection, requires a balance between several factors.
Street Is an Essential Component of Design Brief
Larger parts of the city of Kew come under the heritage overlay controls implemented in the planning scheme of Boroondara municipality, which exterior house painters Kew homeowners hire must respect. Those regulations help maintain the character of the streets, which consist of houses from the Victorian, Edwardian and interwar periods. In some cases, changing the exterior colours and painting unpainted surfaces require obtaining planning permits.
It is wise to check whether the property is subject to heritage controls before choosing the colours. Maps of the Planning Scheme and the database of the Victorian Heritage help determine whether the address comes under such conditions. It is advisable to get early consultation from planning department staff on whether permits are necessary.
Usually, the regulations do not require an exact match of the original colours. Instead, the authorities encourage colour schemes that fit nicely with the surrounding area and the neighbouring houses.
Warm Weather, Sunlight and Paint Deterioration
Warmer weather imposes gradual pressure on exterior surfaces over many years. They constantly expand during the daytime and contract in the nighttime. As a result, those processes create fine cracks which let water penetrate into paint layers.
UV rays decompose paint binders, thus forming a chalky layer that can be easily erased by hand. Dark colours attract more heat and can degrade more quickly on the sunny side of facades. Good quality exterior paints with high UV resistance retain their colour and elasticity for a long time.
Weatherboard, Render and Brick All Need Different Treatments
Weatherboards made from timber are pretty unpredictable; they swell and shrink all the time in response to changes in moisture and temperature. If you have any rotten boards, you’ll need to get those sorted out first or the decay will just keep spreading under the fresh paint. It really does make sense to use a flexible acrylic coating on timber weatherboards instead of something that’s going to crack as they expand and contract.
Rendered walls bring their own set of challenges. Small cracks need to be properly filled in, and you want to use a breathable paint that won’t trap moisture. Trying to paint over damp render is pretty much inviting bubbling and peeling within a couple of years.
Face brick on a heritage street is really worth being cautious about. Painting over unpainted brick is usually a permanent decision, and it might even be restricted under heritage controls. Many people choose to carefully clean and repoint instead of covering off the original brickwork.
Verandahs, Fretwork and Fine Joinery
Kew’s period homes have a lot of lovely cast iron lace, timber fretwork and turned verandah posts. Preparing and painting these details takes so much longer than just flat walls ever will, and it really needs to be done carefully. If you don’t treat rust on the iron lace properly, it’ll just bleed through the new coat.
Windows and doors also need some patience. Old sash windows have a nasty habit of sticking when paint builds up in the channels and moving parts. Getting them ready carefully will keep them sliding smoothly while also protecting the original glass and hardware.
Getting the Timing Right for Exterior Painting
Melbourne’s weather is always changing, so timing is a big part of any exterior job. Spring and autumn are usually the most reliable times of year for exterior painting. Painting in the summer heat can dry the paint too quickly, and winter brings damp mornings and short days.
The paint manufacturers set minimum temperatures and humidity limits for getting good results, and you don’t want to ignore those. Heavy dew on a cool morning can still spoil a fresh coat if you apply it too early in the day.
Safety at Height and Looking After the Neighbours
If you have a double-storey home, you’re probably going to need scaffolding or an elevated work platform. Under Victoria’s workplace safety rules, there are strict requirements for working at height and preventing falls, and a professional painter should explain how they’re going to manage that risk before they start work.
Before the scaffolding goes up, it makes sense to have a friendly chat with any neighbours:
A well-planned exterior repaint can protect your Kew home for many years to come. Pick some good materials, get the timing right, and choose colours that will look good on the façade without upsetting the street it belongs to.
