Avoid condensation in your home

Condensation occurs due to everyday moisture that is produced in the home. As the temperature drops, the moisture condenses on cool surfaces, such as walls and windows.

It can cause mould to form in your home, lead to staining and damaging wallpaper, wall surfaces, window frames, furniture and clothing.

How can I reduce condensation in my home?

Step 1 - Produce less moisture 

  • When cooking - cover pans and do not leave kettles boiling to reduce the amount of moisture  produced by steam
  • When washing clothes - dry your washing outdoors if you can. If you have to dry clothes inside, open the window and keep the door closed. When using a tumble dryer make sure you vent it to the outside (unless it is the self-condensing type)
  • Keep the bathroom door closed when you have a bath or shower to prevent moisture from circulating around the rest of your home. Also remember to turn on your bathroom extractor
  • Avoid paraffin and portable gas heaters - they put a lot of moisture into the air.

Step 2 - Use ventilation to remove moisture

  • Keep a small window or vent open when there is moisture in the room (also leave trickle-vents open)
  • Extra ventilation is needed in the kitchen and bathroom when cooking, washing up, bathing and drying clothes. Opening the windows wider can help
  • Close the kitchen and bathroom doors when these rooms are in use even if they have an extractor fan. This stops the moisture reaching other rooms, especially bedrooms which are often colder and more likely to get condensation
  • Allow space for air to circulate in and around your furniture
  • Open doors to ventilate cupboards and wardrobes - filling them with too many things stops air circulating. Where possible, position wardrobes and furniture against internal walls (if against cold outside walls then leave airspace behind them)
  • Make sure you do not block permanent vents.

Step 3 - Turn up the heat

  • When the whole house is warmer, condensation is less likely
  • During cold spells, a low heat for a long time is better than switching heaters on high for a short period and if possible try to heat the whole house. If you have central heating, set it to provide background warmth in all rooms, including unused rooms
  • Variations in temperature can cause condensation and so when heating is turned off the air cools and releases its moisture just at a time when you are breathing moisture all night in one spot - your bedroom.
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