Most people think one of the best ways to stop mould in the bathroom is by opening a window. And they wouldn't be wrong. Fresh air helps reduce moisture after a shower, and it's a habit many households rely on. But during winter, when temperatures can drop to freezing, leaving a window open might not be practical, and experts say it may not be the most effective option anyway.

Bathrooms are one of the dampest rooms in the home. Steam lands on walls, mirrors and windows, and if it isn't cleared quickly, the moisture lingers. This creates ideal conditions for mould to grow, especially in smaller bathrooms where air circulation isn't as good.

What's more, mould spreads easily once it appears. The fungus feeds on moisture and releases tiny spores into the air, allowing it to travel to other rooms.

It tends to develop around windows because condensation forms there most often.

But experts at ICE Cleaning say bathrooms without windows are at the highest risk.

They explained that when warm air hits cold surfaces, it produces condensation, and when a bathroom lacks natural ventilation, the dampness builds up quickly.

Extractor fans may reduce steam, but they are not guaranteed to stop mould on their own.

The experts say cleaning regularly, wiping away water and improving airflow throughout the home are all important steps in keeping mould under control.

However, they stressed that one method works far better than relying on an open window, especially in winter.

That method uses mould-resistant paint. This type of paint contains additives that prevent mould spores from settling and growing on bathroom walls.

It provides an additional layer of protection in rooms that stay damp for long periods and is particularly useful in small or windowless bathrooms.

The experts say it can make a noticeable difference around window frames, where condensation often forms first.

Other small steps can also help. Wiping down wet surfaces after showers, keeping bathroom doors closed during baths, and using a dehumidifier in damp rooms can all reduce moisture.

Drying clothes indoors adds to humidity, too, so experts recommend using a heated rack or a tumble dryer if possible.

For bathrooms with windows, wiping away condensation and opening them briefly when the weather allows can help, but experts say mould-resistant paint offers longer-lasting protection.

For more tips on how to fight mould this winter, click here.