Identifying condensation
If there's damp and mould in your home that you can wipe off, then the problem is most likely condensation. Condensation is dampness that occurs when water vapour in the air cools on contact with a cold surface. You will often find it on or near windows, on cold wall surfaces – especially if they are north facing, or behind cupboards or wardrobes, where there is little air movement. If the damp in your home is caused by condensation, you will need to take steps to stop it forming in the first place.
How to minimise condensation
Condensation is directly affected by how you use your home. To limit condensation, there a few steps you should take, like producing less moisture, keeping rooms well ventilated, and keeping your home warm. Don’t completely draught-proof windows, especially in kitchens and bathrooms, and don’t block air vents. You should keep cupboards and wardrobes well aired and try not to overfill them, and where possible, line furniture up against internal walls.
Day-to-day steps to help reduce moisture in your home
- Cover boiling pans and turn kettles off quickly
- Avoid drying clothes on radiators, or in front of fires or heaters
- Dry washing outdoors, or in the bathroom with the door closed and the window open or the fan turned on
- When running a bath, put in some cold water first
- Open a window or use any fans in your kitchen and bathroom, and leave them running after you leave the room
- Keep a small window or trickle ventilator open in any room you are using
- Keep curtains open for at least four or five hours each day, to let moisture escape through any window vents
- Try to leave a gap between curtains and the wall during the day
Clearing moisture and mould
It’s important to stay on top of any remaining moisture. Do this by wiping any condensation from windows and elsewhere with a dry cloth every morning and open a window for a while – wring the cloth out in the sink, rather than drying it on a radiator.
You should also wipe any small dots of black mould from walls and other surfaces with a mild bleach solution or anti-fungal spray to stop it spreading – you might need to do this at least twice a month in winter. If mould gets onto fabrics, you can often wash them – but there may be a stain.
Keeping your home warm
Keeping your home at a consistent temperature, means fewer cold surfaces for moisture to settle. You should aim to keep background heating on through the winter months and when you’re not at home. You should also keep a small amount of heat and ventilation going at night, as we give off lots of moisture into the air while sleeping.