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What Causes Condensation?

Condensation is often caused by increased humidity in houses. An average household produces several litres of water vapour per day, which can condense on cold surfaces unless there is adequate ventilation.

Can Condensation Cause Damp?

Condensation occurs when warm air collides with cold surfaces, such as walls and windows. Warm air contains a great amount of moisture, which condenses and forms water droplets, when in contact with cold surfaces. These emerging water droplets can cause damp surfaces and consequently damp problems in houses.

Causes of Condensation


Cooking produces water vapour

Many problems with condensation occur in the kitchen. When preparing meals, a lot of water vapour is released into the air. The extractor fan above cookers is often used incorrectly leading to an excessive amount of moisture in the air.

Bathing / Showering

Bathing / showering

Mould growth caused by condensation is a common problem in bathrooms. If bathrooms are not ventilated after use, warm air condenses on the walls and windows, providing an ideal environment for mould growth. Most bathrooms are fitted with a suitable extractor fan but if it breaks or is turned off by the occupier, often due to noise, then condensation can quickly become a problem.

Washing and Drying Clothes

Drying clothes on a radiator

A lot of condensation is caused by washing and drying clothes. During the drying process water vapour is released into the air, which can condense on cold surfaces. This is a particular problem when drying clothes on radiators or heaters. To avoid condensation caused by drying clothes, clothing is best dried outdoors. When using a tumble dryer it should be made sure that the vent directs outdoors.

For more information call
01403 210204