How Do I Remove Condensation from Double Glazing?

If you’ve noticed condensation in your double glazing, you’re not alone. Many homeowners across the UK experience misty or cloudy windows, especially as their units age. While some condensation is normal, when it appears between the glass panes, it often means the double glazing has failed.

In this article, we’ll discuss the reasons why condensation occurs, what you can do regarding it, and when you should consider replacing your windows.

Why Does Condensation Occur in Double Glazing?

Condensation happens when warm, damp air comes into contact with a cold surface. In double glazing, you may notice condensation:

On the outside of the glass – A sign your windows are insulating well.
On the interior of the glass – Normally associated with excessive indoor humidity (cooking, showers, drying clothing indoors).
Between the glass panes – This means that the seal on your double glazing has failed and there is moisture that has penetrated the unit.

Can You Remove Condensation from Double Glazing?

The answer depends on where the condensation appears:

1. Condensation on the Inner Pane

You can usually minimise this with improved ventilation:

Install extractor fans in bathrooms and kitchens.
Open trickle vents in your windows.
Avoid drying clothes indoors.
Employ a dehumidifier in troublesome rooms.

2. Condensation on the Outside Pane

This is normal and indicates your double glazing is functioning by retaining heat within. It typically goes away as the glass heats up throughout the day.

3. Condensation Between the Glass Panes

Sadly, once water is trapped between the panes, you can’t just wipe it off. The sealed unit has failed, and the only long-term solution is to replace the glass unit or, if your frames are old, the whole window.

Fast Solutions Individuals Attempt (and Why They Fail)

You can find online suggestions such as drilling into the window unit, employing silica gel, or using anti-fog sprays. These might minimise mist temporarily but fail to address the underlying issue: a broken seal.

Professional replacement is the most reliable, long-term solution.

When to Replace the Window

If your windows are more than 15–20 years old, or you are noticing condensation between the panes, then it’s generally more economically viable to replace the unit with new double glazed or even triple glazed windows.

Advantages of replacement are:

Better energy efficiency.
Clear, condensation-free glass.
Reduced heating bills.
Improved noise reduction.
A new, contemporary look for your house.

How St Helens Windows Can Help

At St Helens Windows, we offer quality replacement double glazing that will stand the test of time. Our skilled installers can tell you if you require a replacement glass unit only or new windows altogether. With uPVC, and, aluminium frames to choose from, there’s a style to complement your home and enhance energy efficiency.

Conclusion

So, how do you eliminate condensation from double glazing?

Inside glass → reduce humidity and ventilate.
Outside glass → nothing needed, it’s a good sign.
Between panes → this means the seal has failed, and the unit should be replaced.

If your double glazing is misted or cloudy, it may be time to upgrade. Investing in new, energy-efficient windows will save you money in the long run and keep your home warm, comfortable, and looking its best. Contact us today on 01744 611203 or email us on our contact form.