Condensation – Its Cause And The Measures You Can Take To Stop It

For many local householders, it’s not just the postman or postwoman they expect to see when they have an early home breakfast first thing in the morning at this time of the year. They will also anticipate having condensation all over their windows. 

White UPVC Windows

It makes them look very unattractive, with most people just putting it down to how cold it is outside. That is somewhat true, but there is more of an underlying reason for condensation and it’s to do with there being too much moisture in a house and high humidity. 

Where does this moisture and humidity come from? It’s created in lots of ways, such as when we have a hot shower or cook food on the hob and omit to place the lids on pans.

For it to be removed from your home, you need good ventilation. If you don’t have it, then you should either leave a window open in the relevant space where moisture will be generated or install a dehumidifier. 

Doing nothing to resolve condensation is the worst thing you can do. 

At the very least, you must wipe it away with a towel each time it appears. This will minimise the threat of eventual mould and damp as once they set in, they can negatively affect your health. 

A more permanent and better solution is to have the latest energy efficient double or triple glazed windows fitted. 

They’re far warmer than single glazed windows, so there’s less of a chance of internal condensation making an unwelcome appearance, most winter and autumn mornings. 

If you decide to buy some, there’s something you ought to know – external condensation can still occur, most likely during the months of March/April and October.

It’s all to do with wild temperature fluctuations in those months, but it won’t stay there for long. A slight breeze or bit of sunshine will see it fast evaporate. 


To help our customers understand condensation more, Trent Valley Windows has written a FREE helpful guide about it. Click here to get a copy. 


Beginning your home improvement journey can be daunting. With new terminology and so much choice out there, it can be daunting – and not to mention alienating. To help, we’ve put together this FAQ section and answered some of your key questions.


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