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What is condensation?

Condensation is a process which occurs to some extent in almost all properties when warm moist air comes into contact with a cool surface and condenses to form water droplets. A typical example of condensation is when a bathroom mirror steams up after a bath or shower. Condensation is a symptom of a damp issue, rather than the cause.

Where does it occur?

Warm moist air within your property will be drawn towards cold surfaces such as windows and external walls. On such cold surfaces, condensation is most likely to form in areas with poor ventilation such as the space behind furniture and the corners of rooms. Condensation will become evident as a dark patch of mould on the side of windows or in the corners of external walls near skirting boards or ceilings.

Why does it create mould growth?

Mould and fungi spores are present within all of our homes at all times. However, these spores require food, oxygen and water to grow. These moulds and fungi’s cannot grow where there is insufficient water. However, when a property begins to suffer from condensation this ready supply of water can allow mould and fungi to grow and spread.

How can I remove mould?

Mould can be removed by the use of anti-fungicides, which can be purchased from local DIY stores. These are designed specifically for clearing walls of condensation mould. Alternatively a weak bleach solution can be used, as a more cost effective remedy. It is important to remember that simply cleaning the mould from the affected surface will not solve the issue with condensation and so without dealing with the root cause the mould will most likely return.

What can I do to prevent condensation in my home?

There are three main areas to consider when attempting to reduce the levels of condensation in a property. These are as follows:

  • Is there an excessive production of moisture?
  • Is there adequate ventilation provision?
  • Is there adequate heat within the property?