How to prevent mould and condensation in your home

Condensation and mould is caused by excess water in the home which evaporates and can’t escape your home. This excess water is mainly caused by:

  • Steam from cooking and boiling the kettle
  • Baths and showers
  • Drying clothes inside
  • Unsuitable venting of tumble dryers

A large majority of the time, this is something you can treat and prevent yourself. Below, you can find some handy tips on how you can prevent mould and condensation for a low cost/free.


Condensation – Wipe down any cold surfaces such as windows, mirrors and tiles which have condensation on with a paper towel and then dispose of.

Mould – Spray any existing mould with mould killer/treatments you can by from most supermarkets. Please ensure you read the instruction carefully.



Keeping your home warm is the most important aspect of preventing mould and condensation to return. You should keep your thermostat on at least 18 degrees at all times and then use the temperature values on your radiators to adjust the heating as needed.

Top tip: Keeping your thermostat to 18 degrees will actually save you money rather than turning the heating on and off.



There are many ways you can prevent it from returning. If you do all of the below, mould and condensation is very unlikely to return to your home.

  • Keep your air vents above your windows (if you have them) open all day
  • Open your windows for at least 10 minutes a day
  • Ensure your extractor fans in your bathroom and kitchen are turned on and are on for at least 10 mins after showering or cooking
  • Don’t block airbricks or air vents
  • Close internal doors whilst cooking and open the windows
  • Put lids on pans when cooking
  • Leave a gap between furniture and walls to allow air to circulate