Why Do My Windows Mist Up in Summer?
If you’ve noticed a misty or cloudy appearance appearing inside your double glazed windows during warmer weather, it can be worrying — especially when it seems to come and go depending on the temperature.
This type of misting is different from surface condensation. In many cases, it is caused by moisture forming between the panes of glass inside the sealed unit, which is commonly referred to as a failed double glazing unit.
Understanding what’s happening can help you decide whether it’s simply a cosmetic issue or a sign that your window needs attention.
If you’ve noticed a misty or cloudy appearance appearing inside your double glazed windows during warmer weather, it can be worrying — especially when it seems to come and go depending on the temperature.
This type of misting is different from surface condensation. In many cases, it is caused by moisture forming between the panes of glass inside the sealed unit, which is commonly referred to as a failed double glazing unit.
Understanding what’s happening can help you decide whether it’s simply a cosmetic issue or a sign that your window needs attention.
Repair or Replace?
In many cases, replacing the sealed glass unit is a straightforward and cost-effective fix. However, if your windows are older overall, upgrading to modern double glazing may offer better long-term performance, energy efficiency, and appearance.
Each property is different, so the best approach depends on the age and condition of your existing windows.
Misting between window panes in summer is usually a sign of a failed double glazed unit rather than a surface-level condensation issue.
While it can look concerning, it is often repairable, and in many cases only the glass needs replacing rather than the entire window.
Understanding the cause helps you make an informed decision about whether to repair or upgrade your windows for better long-term performance.
If you’ve noticed misting or condensation between your window panes, Milford Window Company can help assess the issue and advise on the most suitable solution for your home. If it’s just the sealed glass unit that needs replacing, we recommend Addison Glass in Guildford, and have been recommending them for years!
