Should new windows have condensation on the inside? | Checkatrade
Request a quote
Review a Trade

Have you completed a project recently? Let your tradesperson know how they did.

Advice Centre

Get Inspired! Check the latest industry expertise and read insider tips from our vetted tradespeople.

Search For A Trade

We interview and vet all our tradespeople to ensure they meet our high standards.

Join Checkatrade

Join us and benefit from the millions of potential customers who use Checkatrade to find reliable tradespeople.

Advice Centre

Grow your business! Check out top tips and expert advice for boosting your reputation online.

Login To Your Account

Edit your profile, view callback requests and ask for feedback from customers.

Should new windows have condensation on the inside?

You’ve just had new windows installed at your home. They look great and your home is much warmer, but you’ve noticed condensation forming on the inside of the windowpanes, particularly in the morning. Is this normal? Should new windows have condensation on the inside? Let’s ask the experts.

Is it normal for new windows to get condensation on the inside?

In all homes, there is moisture in the air. When this water vapour meets a cold surface, such as a windowpane, it forms condensation.

Water vapour in the air needs a way to escape to stop it from forming condensation. Because new windows are so well-sealed, they prevent moisture from escaping.

This super-efficiency can cause condensation. Therefore, it is quite normal to experience interior condensation with new windows.

How to stop condensation from forming on the inside of new windows

There are several methods you can use to reduce interior condensation on your new windows:

  • An air conditioning unit or de-humidifier will help to extract moisture from the air, reducing the formation of condensation
  • Keeping your windows in the vent position also helps to improve ventilation and reduce condensation
  • One of the best methods for reducing condensation on your new windows is to install trickle vents

What are trickle vents?

Trickle vents are a method of background ventilation. They are integrated into window and door frames to provide a constant flow of air to circulate around the home.

Trickle vents are particularly important in modern housing with new energy-efficient glazing. By opening and closing them as required, you help to reduce the moisture build-up that can eventually cause mould.

Can I add trickle vents to existing windows?

Yes. It is possible to add trickle vents to existing windows. Holes will need to be drilled into the window frames to fit the trickle vents.

All new replacement windows must be fitted with some form of background ventilation to meet current building regulations requirements.

If you’re experiencing problems with your new windows, it’s important to talk to a professional.

To find Checkatrade vetted and approved window specialists in your area, just enter your postcode into the box below.

Search your postcode to find your local trade

Tell us what you think

Please note, you cannot leave a review, or contact a tradesperson by commenting.

Your email address will not be published. Required fields are marked *

What others think of this article:

No comments yet!

Also in this project