What is condensation?
  • It starts as moisture from cooking, washing or drying clothes indoors on radiators.
  • The moist air condenses on cool surfaces such as walls, mirrors, wall tiles and windows, and even some clothes.
  • When the moist air is warm it rises and often ends up on ceilings and in upstairs rooms. It’s then that mould starts forming.


If mould starts:
  • Wipe the mould off immediately with water. Do not use washing up liquid.
  • Apply a mild bleach solution to the wall or use a recommended product available from a DIY store.


Trying to stop condensation

Condensation can start in any home. You can do things to stop it happening.

Control excess moisture:

  • Close kitchen and bathroom doors to stop steam going into other colder rooms.
  • Open kitchen and bathroom windows when cooking or washing to let the steam out, or use an extractor fan if you have one put in.
  • Open some windows in all the rooms in your home for a while each day, this will allow for a change of air.
  • Wipe down surfaces where moisture settles to stop mould forming.
  • If you use a tumble drier, vent it directly to the outside.
  • Use window trickle vents where these are provided.
  • Do not block, take away or cover air vents.
  • Do not switch off automatic kitchen or bathroom extractor fans.
  • Do not use bottled gas or paraffin heaters – these produce a lot of moisture and your tenancy agreement says that you are not allowed to use these.
  • Do not use your cooker to heat your home.


How to produce less moisture:
  • Dry clothes outdoors whenever possible, otherwise use well ventilated rooms.
  • Cover pans when cooking.
  • Vent any tumble driers to the outside.


Keep your house warm:
  • Take steps to stop heat loss in your home.
  • Keep low background heat.

We have created a leaflet which provides you with more information about how to deal with condensation. To read our Condensation leaflet please click here