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Five bathroom mould prevention tips
Written By Ruth MacEachern01 January 2025
Five bathroom mould prevention tips
Avoiding mould growth in your bathroom means taking steps to remove the conditions that allow mould thrive - essentially moist air and cold surfaces that attract condensation. There are steps you can take to protect your bathroom and the rest of your home from mould growth.
Dry wet areas immediately
Wipe up spillages and make sure to dry floors and walls after you take a bath or shower. If possible, dry wet clothes outside or in a dryer rather than on radiators, as the moisture from your clothes travels straight into the air. Never leave wet clothes or towels in the bathroom unless you can ventilate the room with fans or open windows.
Use a moisture meter
You can monitor humidity in your bathroom with a moisture meter. These can be bought from good DIY stores and allow you to track the amount of water vapour in the air of your home. Ideally, humidity should be between 30 and 60 percent, so if you find that levels rise above this threshold, you can take steps to ventilate better.
Avoid water ingress
Check to see if your bathroom windows are allowing rain to seep in and if the sealant around them is damaged. Regularly check there is no damage to your roof as this could also allow rain to seep in and damage the interior of your property.
Run the Extractor Fan During Baths and Showers
Whenever you are using the bath or shower, it is important to run the extractor fan, and to leave it on for at least thirty minutes after you have finished. Minimising the humidity in the air is a key step in bathroom mould prevention, as it is when water is allowed to settle that it provides the best environment for mould and mildew to grow.
Close the Bathroom Door
You should leave the bathroom door closed when you are using the bath or shower. This prevents moist air from escaping into the rest of your house where it can cause condensation to form in other rooms. Keeping the door closed also makes the extractor fan more effective at removing the humidity from the bathroom and helping with overall bathroom mould prevention.
Ventilate
It is important to let air circulate through your home. Keep internal doors open as much as possible and move the furniture away from walls. Open windows on dry days to let air into your home from outdoors, which will reduce humidity levels and therefore help to prevent mould.
At EnviroVent, we have a range of products that can help to keep your home well-ventilated and mould free. For badly ventilated kitchens and bathrooms, it is worth installing an extractor fan, such as our Cyclone 8. It effectively tracks and detects water vapour in the atmosphere and comes with a 7-year guarantee, so you can relax in the knowledge that your home is a safe and spore-free environment.
We also have a range of condensation control units to suit your individual needs. Our whole house ventilation systems remove moisture and dampness from the air caused by cold in the winter and will also work to cool rooms down in the summer, preventing water vapour caused by humidity. We have condensation control units specifically designed for loft spaces and flats and apartments, as well as more traditional houses.
If you want to improve the indoor air quality in your home, we recommend our single room heat recovery unit. Using state-of-the-art technology, it simultaneously retains heat within your home and provides air from outside through internal tubes, meaning that you can feel the benefits of opening your windows without increasing your chances of condensation.
To take the first step in removing mould from your home, get in touch with us today and arrange a Free Home Survey >
Find out more
Avoid condensation damp from becoming a problem in your home. Contact us today to book your free home survey. Our local ventilation specialists can visit your home to identify the causes of condensation and provide advice about the best ways to deal with it. Simply fill in your postcode to find a local expert who can help you.
Meet The Author

Ruth MacEachern
Product Manager
Ruth is recognised for her deep technical knowledge and regulatory insight.
With over 10 years’ experience in the building industry - across sales, planning, supervision and product management - Ruth combines deep regulatory expertise with real-world application. She holds a four-year degree in Building Control, graduating with the highest marks in her class and winning an award for her dissertation.
Ruth has worked closely with Building Control Officers on complex, high-risk projects, including post-Grenfell work, helping interpret regulations and guide compliant outcomes. Today, she plays a central role in Research and Development, shaping products, technical guidance and education across the industry through technical writing, articles for our blog, and webinars.
Passionate about raising standards, Ruth is driven by one goal: Making ventilation clearly understood, properly specified, and taken seriously.
