Window Condensation

Condensation is a word we’re familiar with here at Central Scotland Joinery and so we thought we’d provide an explanation as to what it is and why it occurs.

Condensation is the reverse of evaporation. It happens when matter turns from a gaseous phase into a liquid phase and commonly occurs when a vapor is cooled beyond its maximal threshold and gets condensed. In simple terms, when cold, moist air comes into contact with a surface at a lower temperature.

When moist air comes into contact with a colder surface, the air is unable to retain the same amount of moisture and the water is released to form condensation. It is generally noticeable on non-absorbent surfaces such as tiles or windows.

Condensation on the outside of my windows

Your windows are designed to keep the cold out, so during the evening as the temperature drops the moist air comes into contact with your outer window pane, which is naturally cold. The result is condensation appearing on the outside of your windows.

This is a good thing, as it shows your windows are keeping the cold air out! During the day, the temperature rises and the condensation evaporates. As long as the condensation is not on the inside of your home, everything is fine.

Condensation on the inside of my windows

Condensation that appears inside your home is not necessarily the result of having bad windows as there are many other factors to consider. If your home is cold, extremely humid or lacks any circulation condensation can form as there is little / no movement in the air.

To eliminate any other possible factors, we suggest the following…

1. Ensure your home is not cold. Double glazed windows are designed to keep the heat in but not to generate heat, so using your heating system is still necessary.

2. Ensure there is adequate ventilation. Double glazed windows are fitted with vents to allow air to escape, so try opening them.

3. Reduce humidity – if your home is humid, the air temperature and moisture will no doubt result in condensation appearing.

If you have managed to try the above with no luck and are concerned about the condensation appearing on your windows, please do not hesitate to get in touch and one of our engineers will happily visit your home as part of our 10 year insurance backed guarantee.