Condensation is one of the most common — and misunderstood — issues in Victorian rental homes. It can appear suddenly, especially during Melbourne’s colder months, and if left unmanaged, may lead to mould, dampness, and property damage.
At RENTED, property management is the only priority.
We believe keeping your property healthy is a shared responsibility between renters and owners.
Here’s how condensation happens, how to prevent it, and what both tenants and landlords can do to protect the home.
What Causes Condensation?
Condensation forms when moist air meets a cold surface — think of windows on winter mornings or bathroom mirrors after a shower.
Everyday activities such as:
- Cooking, boiling water, or drying clothes indoors
- Long hot showers
- Unventilated heating during winter
…all release moisture into the air. When that moisture can’t escape, it settles on walls, ceilings, and windows, creating the perfect environment for mould growth.
Tip: The colder and less ventilated the space, the higher the chance condensation will appear.
Why Condensation Matters
Ignoring condensation can cause:
- Mould growth on ceilings, walls, and window frames
- Musty smells and potential respiratory irritation
- Damage to plaster, paint, and window sills
- Increased maintenance costs for landlords
The good news: with a few simple habits, you can control moisture and maintain a healthy indoor environment.
Tenant’s Quick Guide to Reducing Condensation
1. Ventilate Daily
Open windows for at least 10–15 minutes each day — even in winter.
Cross-ventilation helps moist air escape and replaces it with drier air.
2. Use Exhaust Fans
Turn on the exhaust fan when cooking or showering, and keep it running for several minutes afterward.
If your property doesn’t have one, speak with your property manager to discuss options for improving ventilation.
3. Keep Lids on Pots When Cooking
This simple step prevents litres of steam from entering the air.
4. Avoid Drying Clothes Indoors
If possible, dry clothes outside or use a vented dryer.
If indoor drying is the only option, open nearby windows or use a dehumidifier.
5. Maintain Steady Heating
Sudden temperature changes can make condensation worse.
A stable indoor temperature (around 18–20°C) helps reduce the moisture cycle.
6. Wipe Moisture Early
Wipe window sills, tiles, and condensation patches as soon as they appear.
Preventing water from settling stops mould from forming.
7. Report Early Signs of Mould
If you notice mould appearing even after taking precautions, contact your property manager immediately.
They can organise professional cleaning or assess whether ventilation upgrades are needed.
Landlord’s Responsibilities
Under the Residential Tenancies Regulations 2021 (Vic), rental properties must meet minimum standards for ventilation and heating.
That includes:
- Working windows that can be opened
- Functioning exhaust fans in kitchens and bathrooms
- Fixed heaters in main living areas
Landlords are responsible for maintaining these systems and addressing structural issues (like leaks or poor insulation) that contribute to excess moisture.
At RENTED, we conduct regular inspections to ensure all compliance standards are met — so tenants can live comfortably and properties stay protected.
Who Is Responsible for Mould?
In most cases, mould from poor ventilation or daily living habits is the tenant’s responsibility to manage.
However, mould caused by leaks, plumbing faults, or poor insulation is the landlord’s responsibility to repair.
Your property manager will help identify the cause and coordinate the right action.
Simple Tools That Help
Consider investing in:
- A small dehumidifier — perfect for bedrooms or laundries
- Moisture absorber containers — affordable and easy to use in cupboards
- Digital humidity meter (hygrometer) — helps you monitor indoor humidity levels (ideal range: 40–60%)
The Bottom Line
Condensation is natural, but controllable.
By ventilating regularly, using fans effectively, and reporting issues early, tenants can prevent long-term damage and maintain a healthy living space.
For landlords, proactive management and communication with your property manager ensure your investment remains in top condition.
At RENTED, we care for every property as if it were our own, protecting both owner and tenant interests through smart, preventative management.
