If you live around Bunbury, you already know what the humidity and wet season do to a home’s exterior. Warm, damp conditions are perfect for algae, mould and mildew, and they can turn clean render, roofs and paths green or black in a matter of months. Here’s why it happens and how to deal with it properly.
Why the tropics are hard on your exterior
Bunbury’s heat, humidity and heavy summer rain create the ideal environment for organic growth. Spores settle on shaded or damp surfaces — south-facing walls, under eaves, roofs and fence lines — and once they take hold they spread fast. What starts as a faint green tinge becomes dark streaking and staining if it’s left alone.
It’s not just about looks
Algae, mould and lichen don’t just make a home look tired. They hold moisture against the surface, which over time can break down paint and render, and they make paths and pavers genuinely slippery and unsafe. Roof growth can also work its way under and around tiles. Dealing with it early is far easier than fixing the damage later.
Why blasting it off doesn’t work
High pressure might strip the surface growth for a while, but it doesn’t kill the spores — so it comes back, often quickly. It can also damage render, roof tiles and paint. The right approach is cleaning: a low-pressure treatment that actually kills the algae and mould at the root and rinses it away gently, so the surface stays cleaner for much longer.
How to keep it from coming back
A few things help slow regrowth: keep gutters clear so water drains properly, trim back vegetation that keeps walls shaded and damp, and book a periodic soft wash before the growth builds up again. In a climate like Bunbury’s, a clean every year or so keeps everything looking its best year-round.
Get it sorted properly
Every home is different depending on how shaded and exposed it is. If your roof, render or paths are going green, get in touch for a free, no-obligation quote and we’ll recommend the right treatment to clear it and keep it clear.