A lot of homes suffer from damp, which can lead to mould. Mould is usually found in places where there’s poor air flow and cold spots. There are many reasons why a home can be damp but the most common cause in any home is condensation.

What is condensation?

There's moisture in the air all the time, even when you can't see it. Most moisture in your home is created by day-to-day activities like washing, showering and cooking.

Condensation often forms on cold surfaces and places where there’s little air movement, like behind furniture and in corners, if it keeps forming then it's the perfect place for mould to grow. See some of the most common places for mould in the image below:Tackling damp and mould mhs homes

1. Corners of the walls, floors and ceilings  2. Around the edges of ceilings and floors  3. Along the top of windows  4. Behind a bed  5,6,7. On the sides and back of wardrobes and other furniture, especially when they’re next to an external wall  8. On curtains and blinds

How to prevent condensation and mould

If your home is completely shut, no air can get in or out. All the steam and moisture we make from cooking, showering, bathing, drying clothes or even breathing, stays in your home. It has nowhere to go. We recommend you follow the steps below for at least 30 days.

Reduce moisture in the air 

  • If you see condensation forming on your window or window ledge, wipe it away with a dry cloth
  • Leave extractor fans on for as long as possible, if you have them. They’re very cheap to run
  • Open your windows, especially when you’re cooking, having a bath or a shower. This allows the moist air to go outside and not into your home
  • When you’re running a bath put cold water in first, before the hot – it reduces steam by 90%
  • Cover your pots and pans when you’re cooking and don’t let your kettle boil over – this’ll help reduce steam
  • Dry your clothes outside. If you can’t dry them outside, dry them in the bathroom with the door shut and window open and the extractor fan running (if you have one). Don’t dry them on radiators
  • If you have a vented tumble dryer, make sure the end of the hose leads to the outside, through an open window for example

Increase the air flow

  • Keep your air bricks and window vents open. They let air in and out and won’t work properly if they’re blocked up
  • Make sure the space around your radiators is clear from things like clothes and furniture
  • De-clutter your wardrobes and cupboards. Mildew (a type of mould) will grow in places stuffed full of clothes
  • Leave space between furniture and external walls to allow air to circulate
  • Use moisture traps on your windowsills and consider getting a dehumidifier

Heat your home effectively

  • Make sure your home is kept at a constant temperature. The Environmental Health recommend your home should be between 18-22°c
  • Use your thermostat to balance the temperature and avoid the property getting cold even when you’re not in
  • Keep the humidity level below 60% by following the tips above. Humidity is the amount of moisture in the air. If you would like a free humidity sensor then you can collect one from our Broadside office, the address is at the bottom of this page.


The most important thing is to kill mould. Spray the affected area with a mould killer once a day for 10 days and then once a week after that. You can get mould remover spray from most supermarkets – just follow the instructions.

Please don’t hoover or brush the mould as it can make the problem worse.

Use a good quality anti-fungicidal paint to help prevent mould from forming again. You can buy this from most DIY shops.

The only lasting way of avoiding severe mould is to prevent condensation.


If you’ve followed the steps above and you still have problems then there could be another reason for the condensation and mould. Please fill out the form below and we’ll get in touch with you.


You'll need to check for:

  • Damaged seals around baths and showers
  • Leaking high level gutters, overflow pipes and rain water pipes.
  • Leaking pipework
  • Leaks coming from roof - missing slates or tiles can be seen from ground level
  • Blocked gutters - water spilling over on a regular basis or splattering against the walls
  • Downpipes – holes in the back/water escaping
  • Penetration around window frames
  • Cracks to external walls
  • Blocked vents, extractor fans
  • Rising damp due to either defective or no damp-course

If you see any of the above tell us in the form below – we’ll come and have a look.

Your Responsibilities

What you're responsible for

 What we're responsible for

Keeping your home ventilated Providing ways to ventilate your home (if possible)
 Keeping your home heated Looking after the central heating
Reducing moisture in your home and cleaning off mould Giving you tips and advice on what to do
Reporting repairs and mould which won't go away Carrying our repairs and visiting if you have mould which won't go away

Reporting damp and mould

If, after following the advice on this page, you still have damp and mould you can report it by filling in the form below. It'll take about five minutes.

Damp and mould form >