With wet weather increasing the humidity indoors, especially when doors and windows are tightly shut, it’s easy for condensation to build up on walls, ceilings and cold surfaces. Without proper airflow, this damp environment becomes the perfect breeding ground for mould spores, which can quickly take hold behind furniture, around window frames, or in poorly ventilated bathrooms.

Stephen Hankinson, heating expert at Electric Radiators Direct, warns: "Home heating plays a vital role in controlling moisture and maintaining a healthy indoor environment. By understanding how temperature fluctuations contribute to condensation and dampness, you can take proactive steps to prevent mould from taking hold in your home."

While it might seem counterintuitive, the most effective action you can take after a rainy day is simply opening your windows to let fresh air in and stale, damp air out.

As Mr Hankinson explains, a home without ventilation can create a stuffy, moisture-trapped environment that mould thrives in.

"Spring and summer storms can increase indoor dampness, particularly if water seeps in through doors, windows, or leaks," says Mr Hankinson.

He adds: "After a rainy spell, it's best to open windows and doors to help air circulate and dry out any moisture that may have entered your home." It’s a small step that makes a big difference, especially in bathrooms, kitchens and other high-humidity areas.

There are a few other expert tricks worth remembering to mould-proof your home all year round. Placing furniture too close to radiators can trap moisture in dark corners, so always allow a bit of space to let warm air circulate freely.

For homes with unheated spaces like basements or garages, consider using a small space heater or dehumidifier to reduce condensation in these problem areas.

Mr Hankinson concludes: "Keeping mould at bay during the spring and summer doesn’t have to be a hassle – making some simple adjustments to your heating, humidity levels, and airflow, you can create a home that’s dry and mould-free."

So, next time it pours down outside, reach for the window latch – fresh air might just be your best defence against damp.