- Damp and mould don’t disappear in summer; they actually thrive due to high humidity, warm temperatures and poor indoor ventilation, especially in areas like kitchens and bathrooms.
- Summer is an ideal time to tackle the issue, with simple actions like improving airflow, using dehumidifiers, drying clothes outdoors and checking for leaks helping to reduce moisture levels.
- Acting now prevents bigger problems in winter; wetter conditions make damp and mould harder to control and more costly to fix.
When we think of damp and mould, we usually picture cold, wet winters, steaming windows and chilly bathrooms. So it’s not surprising that many people assume these issues disappear once the sunshine rolls in. Unfortunately, that’s not quite true.
Damp and mould can be just as much of a problem during the summer months, just for slightly different reasons. If you’ve noticed musty smells or patches of mould even while the weather’s been warm, you’re not alone. Let’s explore why summer damp happens, and what you can do now to stop it getting worse when autumn arrives.
Why Damp and Mould Doesn’t Take Summer Off
It’s easy to assume that warmer weather means dry air and fewer problems, but mould thrives in warm, humid conditions, making summer the perfect environment for it to grow.
Here’s what’s going on:
Higher humidity
Even though it’s warm, summer air often carries a lot of moisture. When this humid air settles on cooler surfaces, like windows, walls or shaded corners, it can lead to condensation.
Warmer temperatures
Believe it or not, mould loves the heat. It grows best between 21°C and 32°C, which is exactly the kind of temperature we often get indoors in summer.
Poor ventilation
Many of us keep windows closed when we’re out or if it’s too hot outside. Unfortunately, this traps moisture inside the home, especially in kitchens and bathrooms where steam builds up quickly.
Household dust and materials
Mould feeds on organic material like paper, dust, cardboard and even the paint on your walls. With the right conditions, it doesn’t take long to grow.
How to Fight Summer Damp, Ahead of Autumn
Summer is actually a great time to get on top of damp and mould problems before the colder months arrive. Here are some simple, effective steps to take:
Keep the Air Moving
- Open windows when you can, especially after cooking or showering.
- Use extractor fans in the kitchen and bathroom if you have them.
- Even placing a small fan in a stuffy room can help reduce stagnant air and stop damp from settling in.
Use a Dehumidifier
- These handy devices pull moisture from the air and are especially useful in high-risk rooms like bedrooms, basements or poorly ventilated bathrooms.
- If buying one isn’t possible, RES advisors may be able to help suggest low-cost alternatives or support options.
Watch for Condensation
- Keep an eye on windows and walls. If they’re wet in the mornings or after certain activities, it’s a sign that humidity is too high.
- Wipe down condensation as soon as you see it and look for patterns; this helps you know where to focus your efforts.
Fix Leaks Promptly
- Even tiny drips from taps, toilets or pipes can create damp patches over time.
- Summer is the perfect time to check for hidden leaks, especially under sinks or around washing machines.
Dry Clothes Outdoors
- We know it’s not always easy, especially in flats or on rainy days, but where possible, dry your washing outside.
- Indoor drying adds litres of moisture to the air, which all contributes to damp and mould.
Keep Your Home at a Stable Temperature
- Sudden changes in temperature can cause moisture in the air to settle on walls or windows.
- Try to keep rooms warm enough that damp doesn’t form, but not too hot that humidity becomes an issue.
It’s much easier to deal with dampness in the summer than to wait until winter when your home is harder to ventilate and heat. Tackling issues early can help prevent mould from returning later in the year and save you money on repairs, cleaning or extra heating.
If you’ve noticed signs of damp or mould, even in summer; don’t ignore it. Take small steps now and chat to a RES CIC advisor today to stay ahead of the problem.