When the air gets warmer, cooler surfaces in your home retain some water and release moisture – this leads to condensation and mould. This is often mistaken for damp.

Spot the signs of condensation

  • Mirrors and windows steam up.
  • Furnishings feel damp.
  • Moist walls.
  • Black spots of mould appear on outside-facing walls.

Know the cause of condensation

  • Poor ventilation.
  • Cold surfaces.
  • High amounts of water vapour from cooking, bath, tumble dryer, etc.

Reducing condensation

  • Have medium/low heat through the house. Heating one room to a high level and leaving others cold makes condensation worse in unheated rooms.
  • Keep your central heating on longer, allowing rooms to stay warmer longer.
  • If you don’t have heating in every room, keep unheated rooms open to let heat in. Don’t use paraffin or liquid gas heaters.


  • Leave a gap between furniture and external walls.
  • Open a window when boiling a pan or a kettle, running a bath or using a tumble dryer.
  • Keep lids on boiling pans.
  • Don’t dry clothes on radiators.
  • Don’t over-ventilate when it’s cold.
  • ‘Cross ventilate’ your home by opening a small window downstairs and another upstairs on the opposite side. Make sure you close them when you leave.
  • Open internal room doors so that drier air can circulate.
  • Keep bathroom and kitchen doors closed when cooking or bathing.

Top Tips

  • Treat black mould immediately. Mould can easily be wiped away.
  • Mould and mildew spray can be bought from most supermarkets.

If you have tried all of the above tips and you are still experiencing problems, please e-mail us with your details, or call us on 01282 686300 for further advice.