Steamed Up Windows – Is it Normal?

Condensation on windows

Finding steam on your windows is surprisingly common, particularly during the colder months.

It may be unsightly to look at, it isn’t necessarily a major problem.

But, there can be issues which may arise if the steam is persistent, and in some cases, it could be symptomatic of a larger problem.

Why do windows steam up? 

The steam on your windows, whether outside or in, is the result of condensation.

When moisture in warm air meets the cold pane of glass in your window, the water vapour condenses into water.

The most common occurrence is likely to be in your bathroom or kitchen, when hot water turns to steam which then condenses back into water when it hits the cold window pane.

Preventing windows steaming up on the inside

Windows steaming up on the inside can be prevented by using effective ventilation in your home.

In the kitchen or bathroom, make use of your extractor fans to extract the damp air from the room before it hits the window.

If you are experiencing steam on the inside of windows elsewhere in the home, open a window slightly to let the air out and it will soon disappear.

It’s a good idea to prevent steam from occurring where you can, as, if left unchecked, it can lead to damp issues or damage to paintwork.

Windows steamed up on the outside

Condensation outside the window is perfectly normal and completely harmless.

In fact, it’s actually a sure sign that your windows are doing their job and preventing the air from entering your home while keeping the warm air inside the home.

Condensation inside the window pane 

When you get condensation appearing inside the double glazing unit, this is generally bad news and will need attention from a professional expert.

It occurs because air is getting inside the unit and then condensing on one of the panes of glass. Over time, chemicals, such as those used in cleaning fluids, can break down the sealant around the panes, allowing the air to enter. However, if your windows are reasonably new, this issue could be down to improper installation or a fault with the supplied unit.

Windows becoming steamed up is a common occurrence in double glazing. Allowing for better airflow in rooms where steam is created will prevent this from occurring inside the home. However, in the case of windows steaming up inside the double-glazing unit, you will always need to get professional support from a double glazing installer.

BBL Windows are specialists in double glazing installation in London. Whether it’s a window or a door you’re having a problem with, we’re sure we can help. Just give us a call or send us a message and we’ll be in touch.