Health-focused approach
Protecting your family's air quality
IICRC Certified Technicians
The global standard in remediation
Serving Brisbane & Sydney
Local climate expertise
That musty "wet season" smell? Dark spots on bathroom ceilings? These aren't just cosmetic issues; they're signs that your home is losing the battle against moisture. This guide provides actionable steps to make your home resilient against mould growth.
1) Master your ventilation
Mould thrives in stagnant, damp air. Your primary defence is to keep air moving. This replaces humid indoor air with drier, fresh air, preventing moisture from settling on surfaces.
Try this first
- Use exhaust fans in kitchens & bathrooms.
- Open windows for 15 mins daily.
- Use ceiling fans to circulate air.
Call a pro if…
- A musty smell persists despite ventilation.
- You have condensation on walls or windows.
2) Control moisture at the source
Mould needs water to grow. Finding and fixing leaks—no matter how small—is critical. A slow drip under a sink or a minor roof leak can create a hidden mould colony that affects your entire home.
“The golden rule: Dry wet building materials and furnishings within 24–48 hours to prevent mould growth. This includes spills, leaks, and flood damage.”
3) Manage indoor humidity
In Brisbane, outdoor air is often very humid. Your goal is to keep indoor relative humidity between 40% and 50%. Use a hygrometer to measure it. Air conditioners (on 'dry' mode) and portable dehumidifiers are essential tools during the wet season.
4) Clean and inspect regularly
Regular cleaning removes dust and organic matter that serve as a food source for mould. Pay close attention to high-risk areas: shower grout, window sills, behind furniture, and inside wardrobes. Catching small spots early prevents a large-scale problem.
5) Use sunlight and strategic airflow
Sunlight's UV rays are a natural mould inhibitor. Open blinds and curtains daily to let light in, especially in south-facing rooms. Ensure furniture isn't pushed hard against walls; leave a small gap to allow air to circulate freely and prevent moisture from getting trapped.
DIY vs. call a pro
DIY is okay for…
- Small spots (less than a dinner plate) on hard, non-porous surfaces like tile or glass.
- Regular cleaning of shower grout.
Call a professional for…
- Mould on plasterboard, wood, or carpet.
- Any area larger than 1 square metre.
- If you suspect mould is hidden behind walls.
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Can I just paint over mould?
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No. Painting over mould does not kill it. It only hides the problem, and the mould will continue to grow underneath and eventually reappear, often worse than before.
Are mould air purifiers effective?
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Air purifiers with a HEPA filter can capture airborne mould spores, improving air quality. However, they do not address the source of the mould growth. They are a good complementary tool, not a standalone solution.
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