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Condensation and mould

Condensation and mould

During cold weather condensation becomes a problem in many homes.  It is caused when warm moist air hits a cold surface, such as a window or external wall and condenses and runs down the cold surface as water droplets.  If left this can develop into black mould which looks and smells bad and can cause damage to decorations, furniture, clothes and shoes as well as causing health problems.

There are 4 things to consider when dealing with a condensation problem:

  • Heating: Try to keep temperatures in all rooms above 15°C as this will reduce condensation forming on external walls.   
  • Insulation: Improving the insulation within a property will help tackle the problem by increasing the surface temperature of walls, ceilings and windows and generally increases the temperature of the home.
  • Ventilation: Condensation will occur less if you allow air to circulate freely and moisture laden air is removed from the property during peak production ie. having the extractor on whilst showering and cooking.
  • Moisture reduction: Condensation in the home can be reduced by taking steps to lessen the amount of moisture in the air. Download the Dealing with Damp and Condensation booklet for ways to help deal with damp and condensation.