Condensation on windows is a common issue, especially during colder months when the temperature drops and indoor heating kicks in. While it might seem like a minor nuisance, excess condensation can lead to more serious problems like mould, mildew and damage to window frames. The good news? There are effective ways to keep condensation at bay and ensure your home stays dry and mould-free. Here are some practical tips to help stop condensation happening on windows.
What Causes Window Condensation?
Before tackling the problem, it's important to understand the cause. Condensation occurs when warm, moist air comes into contact with a cooler surface, like a window. This is particularly common in:
Homes with poor ventilation: Limited airflow traps moisture indoors.
High-humidity areas: Kitchens, bathrooms and utility rooms are prime spots for condensation.
Cold weather: Cooler temperatures make windows an easy target for condensation.
Helpful tips to Prevent Condensation on Windows:
1. Improve Ventilation
Proper ventilation is key to reducing indoor humidity levels and preventing condensation. Open windows regularly, even for a few minutes on colder days, to let fresh air circulate. If you can, it's a good idea to also keep doors open to improve the airflow also. If you have crittall doors they will help to exclude drafts, etc. in your home.
Use exhaust fans in bathrooms and kitchens to expel steam and moisture and keep the bathroom window open when having a shower.
Consider installing trickle vents on windows for continuous airflow.
2. Use a Dehumidifier
A dehumidifier can be a game-changer, especially in high-humidity rooms. It helps to:
Remove excess moisture from the air.
Maintain a consistent humidity level (ideally between 30-50%).
Reduce the likelihood of condensation forming on windows.
3. Adjust Indoor Temperature
Keeping a steady indoor temperature can help balance the difference between warm indoor air and cold window surfaces.
Use your thermostat to maintain a comfortable but consistent temperature.
Avoid drastic temperature changes, which can encourage condensation.
4. Invest in Double-Glazed Windows
Double-glazed or insulated windows are designed to reduce heat transfer, making them less prone to condensation.
These windows have two glass panes separated by a layer of gas, which acts as insulation.
If double glazing isn’t an option, consider applying a window insulation film as a temporary measure.
5. Minimise Indoor Moisture Sources
Small changes can make a big difference in reducing humidity levels at home.
Dry laundry outdoors or use a vented dryer.
Cover pots while cooking to minimise steam release.
Avoid overwatering indoor plants.
6. Clean Windows and Frames Regularly
Condensation can lead to mould and mildew if left untreated, so regular cleaning is essential.
Wipe down windows daily during colder months to remove excess moisture. You can also use a window vacuum to help remove condensation from windows and a dry cloth to remove any excess water from window frames.
Use a mild cleaning solution to prevent mould growth on window frames. Some people recommend using a thin layer of washing up liquid on windows to help keep condensation at bay.
7. Install Window Insulation Film
Window insulation film is an affordable way to improve the thermal efficiency of your windows.
Apply the film to the inside of windows to reduce heat loss.
This helps keep the glass surface warmer, minimising condensation.
8. Use Moisture Absorbers
Moisture absorbers like silica gel packets or reusable dehumidifying crystals are great for small spaces.
Place them on windowsills or in problem areas to absorb excess moisture.
They’re especially useful for homes without a dehumidifier.
When to Seek Professional Help
If you’ve tried these tips and still struggle with persistent window condensation, it may be time to consult a professional. They can:
Inspect your home’s ventilation system.
Suggest advanced solutions like whole-house ventilation units or upgrading to energy-efficient windows.
Preventing condensation on windows doesn’t just make your home look better; it also protects your health and property from potential damage. By improving ventilation, controlling indoor humidity and investing in proper insulation, you can enjoy clear, dry windows all year round.
