How to Fix Window Condensation: Expert Tips to Stop Moisture in Your Home
Window condensation is a common issue for many households that can be troublesome when it begins to affect your windows, comfort and even your health. While it may be more prevalent during colder months, it can still appear throughout the year and prove difficult to get rid of.
Here, we draw on over 35 years of experience installing windows and doors to help you better understand window condensation, its causes and how to prevent it.
What Is Window Condensation?
We all know window condensation as an unwanted house guest and a nuisance to take care of. But what is it?
Well, window condensation happens when warm, moist air inside your home comes into contact with a cold window surface. This warm air holds more moisture, so when it reaches the cooler glass, it cools down and releases its moisture in the form of water droplets. This is the same principle that causes condensation on a cold drink in summer.
What Causes Condensation Inside Windows?
Now that we know what condensation is, let’s look at the cause of condensation inside windows. The issue is usually due to one or a mix of the following:
Poor Ventilation
When air circulation is insufficient, moist air becomes trapped indoors. Without proper ventilation, this moisture can settle on colder surfaces like windows, causing condensation.
High Humidity
High indoor humidity is one of the main causes of condensation. When it meets cold windows, it condenses, creating water droplets on the glass.
Temperature Imbalance
When warm air inside your home meets cold window surfaces, the temperature difference causes condensation.
Old Windows
Older windows, particularly single-glazed or poorly sealed ones, are more prone to condensation. Replacing them with the likes of modern windows, those with advanced sealing and multi-layer glazing, can help eliminate this issue.
How to Fix Window Condensation (Quick Solutions)
How to fix window condensation is a question we’ve all asked. Especially true during colder months, advice on how to deal with window condensation can lead you to try countless hacks and tricks. Whatever about this type of “guidance”, there are five tried-and-tested methods that Robert Kennedy, Managing Director of Sky Windows has gifted homeowners that you can turn to today:
- Ventilation: Proper ventilation is needed to reduce condensation. Open your windows regularly to allow moist air to escape, and consider installing extractor fans or vents to improve airflow.
- Reduce humidity: Lowering the humidity in your home is key to preventing condensation. Use a dehumidifier, moisture-absorbing products or even houseplants to absorb excess moisture.
- Stable temperatures: Maintain a stable indoor temperature by setting your thermostat to a consistent level, especially at night, to keep your home warm enough to avoid moisture build-up from colder air outside.
- Move furniture: Ensure your furniture isn’t blocking heat sources or airflow to your windows. Moving furniture, especially large items, away from windows allows air to circulate freely, preventing cold spots on walls and windows where condensation can form.
- Wipe windows: Another straightforward solution, regularly wiping down your windows will remove excess moisture and prevent it from accumulating.
While these methods will help reduce condensation, it might be the case that you need window repair as a result of an ongoing issue. If so, feel free to reach out to Sky Windows as our experienced team can provide a range of repair services.
Best Way to Stop Window Condensation Long-Term
Stopping condensation is the ideal outcome of any method put in place, but is there a single best way to stop window condensation? The answer is neither yes nor no, but that three key elements working together can fix the issue.
Upgrade Glazing
To begin, upgrading to double or triple glazing windows can provide better insulation, keeping the inner glass surface warmer and reducing the likelihood of moisture forming. Low-E coatings further improve energy efficiency by reflecting heat back into your home, preventing heat loss and condensation.
Improve Window Materials
Replacing old windows with high-quality uPVC windows or composite frames is an excellent long-term solution. These materials are energy-efficient, provide superior insulation and reduce the risk of condensation.
Add Airflow Features
Installing trickle vents in your windows can significantly improve ventilation in your home. These small, discreet vents allow a constant flow of fresh air while maintaining energy efficiency.
When You Need New Windows
If condensation is a constant problem in your home and your attempts to prevent it aren’t working, it may be time for a change of windows. The main signs your home is in need of an upgrade are if you’re experiencing persistent condensation and if it’s appearing between panes. This can mean that the windows are defective, or that no matter what method of prevention you try, nothing will work.
Extra Tips to Get Rid of Window Condensation
As strange as it may seem, another way to get rid of window condensation is to use… salt! Salt can help reduce window condensation because it acts as a natural desiccant absorbing excess moisture from the air before it settles on cold glass. Placing bowls or small fabric bags of table or rock salt on windowsills can lower humidity in the immediate area and reduce morning fog, especially in bedrooms. It works best in small or enclosed spaces and should be replaced when damp or clumpy.
The VHI Principle
Another way to get rid of window condensation is to utilise the VHI principle: Ventilation, Heating and Insulation. Here’s why it works.
- Ventilation: Allows moist air to move around and out of confined spaces.
- Heating: Maintaining an ambient temperature in a room or area will ensure that the conditions for condensation to thrive are minimised.
- Insulation: Having good quality insulation will keep interior surfaces warm and prevent moist air from interacting with a cold surface where it will cause condensation.
About Sky Windows
In operation for more than 35 years, Sky Windows is a family-run business and Munster’s leading supplier of high-quality windows and doors.
If you’re looking for modern windows and doors that can make a real difference to your home, contact Sky Windows today for expert advice.
Window Condensation FAQs
What is the main cause of window condensation?
The main cause of window condensation is the difference in temperature between the inside and outside of your windows. When warm, moist air inside your home comes into contact with cold windows, creating condensation. Condensation is especially common in colder months.
How do I stop condensation overnight?
To stop condensation forming at night, increase ventilation by opening windows or using extractor fans. You can also use a dehumidifier or place moisture-absorbing products around the room to reduce humidity levels. Keeping indoor temperatures more consistent helps, too.
Does a dehumidifier help with window condensation?
Yes, a dehumidifier can help by reducing excess moisture in the air. It pulls moisture from the air, helping prevent condensation on windows and improving indoor air quality, especially in rooms prone to high humidity like kitchens or bathrooms.
Is condensation a sign of bad windows?
Condensation can sometimes be a sign of poor window insulation, especially if it occurs between double glazing. It can indicate that your windows are not efficiently keeping the cold out and the warm air in, which could be causing moisture build-up.
Can new windows stop condensation completely?
New, high-quality windows with modern glazing technologies, like double or triple glazing, can significantly reduce condensation by providing better insulation. However, they might not eliminate it entirely, especially if humidity levels are high inside the home. Proper ventilation is still important.