Protect Your Home from Mould During Rain, Storms, and Humidity

Image captured by author Kylie Sheedy

Recent rain, storms, and relentless humidity have created the perfect conditions for mould to thrive in our homes. This unwelcome guest doesn’t just cause unsightly stains, it can also have serious effects on our health. Preventing mould growth in damp, humid weather is vital for maintaining a safe, clean, and healthy living space.

The Health Effects of Mould

Mould is more than a cosmetic issue; it can have real consequences for your health. When mould grows, it releases spores and tiny particles into the air. Breathing in these particles can affect everyone, but certain groups, such as children, the elderly, and those with respiratory issues are particularly vulnerable.

1. Respiratory Issues

Mould spores can irritate the lungs and airways, causing coughing, wheezing, and shortness of breath. People with asthma often find that mould worsens their symptoms, and long-term exposure can increase the risk of developing chronic respiratory problems.

2. Allergic Reactions

Many people are allergic to mould. Common symptoms include sneezing, itchy eyes, runny nose, and skin rashes. These allergic reactions can range from mild to severe, depending on the person and the extent of mould exposure.

3. Infections

Those with compromised immune systems are particularly at risk. Mould exposure can lead to infections, particularly in the lungs. This is why preventing mould in homes with vulnerable occupants is especially important.

4. Mental Health Impact

Living in a mouldy environment can also affect mental health. The sight and smell of mould, combined with the stress of dealing with it, can create anxiety. For some, long-term exposure to toxic moulds has even been linked to symptoms like brain fog, headaches, and trouble concentrating.

Given these potential risks, it’s clear that mould prevention isn’t just about protecting your home, it’s also about safeguarding your family’s health.

Why Rain, Storms, and Humidity Encourage Mould

Mould spores are everywhere, but they only grow when the conditions are right. Rain, storms, and high humidity levels create the perfect environment for mould to thrive. Excess moisture from leaks, condensation, and poor ventilation allows spores to settle and grow on walls, ceilings, and furniture. Bathrooms, kitchens, and poorly ventilated areas are especially prone to mould infestations during this kind of weather.

Practical Tips to Prevent Mould

The good news is that there are simple, effective ways to reduce moisture and improve airflow, making it harder for mould to take hold in your home.

1. Use Air Conditioning on Dehumidify Mode

Many air conditioning units have a dehumidify mode, often indicated by a raindrop icon. This setting reduces the moisture in the air, creating a less hospitable environment for mould. Check your air conditioner’s manual to ensure you’re using this feature correctly, and run it regularly during humid weather.

2. Place Dehumidifying Pods Around Your Home

Dehumidifying pods, available from stores like Bunnings, are an affordable way to absorb excess moisture in small spaces. These pods are ideal for wardrobes, cupboards, and other enclosed areas where dampness tends to build up.

3. Ventilate Bathrooms and Kitchens

Bathrooms and kitchens are hot spots for mould due to the steam from showers and cooking. Always use the exhaust fan when showering or cooking, and leave it running for at least 10 minutes afterward. If you don’t have an exhaust fan, open a window or keep the door ajar to allow moist air to escape.

4. Use a Squeegee After Showering

After showering, use a squeegee to remove water from shower screens, tiles, and walls. This simple step can significantly reduce the amount of moisture left in your bathroom, making it harder for mould to grow.

5. Dry Wet Areas Quickly

Mould can begin growing on damp surfaces within 24-48 hours. Be proactive about wiping up spills, drying condensation on windows, and mopping up any standing water. For wet clothing, towels, or other fabrics, make sure they are dried promptly—preferably outside or in a well-ventilated area.

6. Encourage Airflow Throughout Your Home

Proper ventilation is key to mould prevention. Open windows on dry days to let fresh air circulate, and use ceiling fans to keep the air moving. If you have rooms that tend to be stuffy, consider investing in a portable fan to increase airflow.

7. Inspect Your Home for Leaks

Rain and storms can lead to leaks in your roof, windows, or plumbing. Regularly inspect these areas for signs of water damage, and address any issues promptly. Fixing leaks quickly can prevent water from seeping into walls, floors, and ceilings, where mould can take root.

8. Clean Regularly with Mould-Resistant Products

Dust and organic matter provide a food source for mould. Regular cleaning keeps these surfaces free of debris. Consider using mould-resistant sprays or cleaners, especially in areas prone to dampness like bathrooms and kitchens.

9. Consider a Dehumidifier for Persistent Humidity

If high humidity is an ongoing issue in your home, investing in a standalone dehumidifier may be worth it. These appliances help maintain an ideal indoor humidity level of 30-50%, keeping mould growth at bay.

Final Thoughts

Rain, storms, and humidity may be unavoidable, but mould doesn’t have to be. By taking proactive steps to reduce moisture and improve ventilation, you can create an environment where mould struggles to thrive. From running your air conditioner on dehumidify mode to addressing leaks quickly, these tips will help keep your home clean, fresh, and safe.