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Ways to prevent window condensation

Note: this is a partnered post and consideration was received for its publication.

Do you find you have a build up of condensation on windows in your home? If so, then you will need to take some simple steps to keep this to a minimum as over time, it could begin to cause problems.

What is condensation?

Condensation forms when warm air meets colder air, such as on the colder surface of a window. The reason why this happens is there is more moisture in warm air and when it meets a cold surface, it is unable to hold on to this moisture, releasing it as condensation. Whilst you may see a large amount on the window, it may also be present on the walls too, as they tend to be cooler than warm air within a room too.

Where is the condensation on your windows coming from?

There are a variety of sources such as breathing (including when you are asleep), cooking, washing or showering, heating and drying clothes in the house is one of the largest culprits releasing 5.5litres or more moisture into the air. If condensation builds in your property, over time it will start to cause problems. Window condensation is an indication that damp within your property could be an issue and you will need to start taking steps to deal with condensation.

What to do about window condensation

  1. Single paned windows or ill-fitting windows where there are draughts and cracks can make window condensation worse. You will also need to check the outside of the window unit as a sealant that was used in older style windows known as caulking, should be acting as a seal. Over time, this seal can become less effective. Fitting double glazed uPVC windows will make for an effective solution.
  2. Preventing the build up of window condensation can also be helped by ensuring there is adequate ventilation, even if you do have double glazed uPVC windows. Ventilation allows dry air to circulate around your home.
  3. Extractor fans in the kitchen and bathrooms in your property can be used to effectively expel moisture laden air, reducing the build of condensation on windows throughout your home.
  4. Do you have vents in your walls? If so, many people block then to reduce draughts but by doing so, are blocking circulating air. Just try uncovering these vents for a few days and nights and see how condensation on windows diminishes.
  5. Even though air circulation is important within your home, but insulation is important too. Having draughts in places where you should not – around window frames and exterior door frames – will cause an excess of cold air.
  6. Have you had work done on your home recently? Renovations will change how air flows around your property. If you notice a build up of window condensation, it may be that you need to take a look at how the air is now able –or unable – to circulate around your home.

Poorly fitting windows can present condensation problem in a property. If you have noticed more condensation than usual, take a look at your windows. Do they need upgrading to uPVC double glazed windows?