An unpleasant smell in your bedroom or mould growing on your window frames could be a sign of condensation

Living in a property affected by condensation and mould formation with a damp smell makes for an uncomfortable and unhealthy home. Damp problems must be sorted out immediately after encountering them.

Condensation also destroys plaster-work, the interior walls, window frames and timber including skirting boards.

Condensation can be seen in any building during winter when cold air condenses on the cold surfaces of the materials.

For advice call our condensation experts today on 020 7458 4864.


There are many reasons for the mould to appear and infest. During winter, for instance, air inside the building is warm and as the warm air comes into contact with the cold surfaces like walls and windows, it cools down below the dew point and condensation occurs along with mould.

Condensation is usually witnessed during winter months and is mostly caused due to:

  • Poor heating
  • Lack of ventilation while showering or cooking
  • Wet clothes hung up to dry
  • Leaking drain or water pipe
  • Roof leak

Maintaining adequate room temperatures and wiping the water droplets at once will minimize mould formation.

Preventing condensation

Preventing condensation involves proper ventilation and heating of your home, to release moist air from the rooms.

Condensation disappears after cold months. Hence it is advisable to stay alert during the winter months to overcome any condensation problems.

Kitchens and bathrooms are more prone to condensation than other rooms in the house. Dehumidifiers in the home can prevent condensation forming as it draws in air, cools it and reheats it to recirculate.

Our experts at London Damp Specialists Ltd will quickly assess the dampness in your home, diagnose the exact source and type of dampness and medicate treatment to safeguard your property and the health of its occupants.

Condensation Control London

Here at London Damp Specialists Ltd we are experts in all areas of condensation and how to avoid it. Get in touch with us today to discuss your requirements and let us visit your property or business to analyse the condensation problem and come up with a suitable remedy. Call our experienced team today on 020 7458 4864.

How You Can Stop Condensation

Condensation can be verified by sealing the room with a dehumidifier to run for a recommended time and measuring air humidity and temperature with
meters and other instruments.

If the dampness disappears, then condensation is the issue. Condensation can be exacerbated by poor ventilation and heating and the symptoms include water droplets on windows and walls with dark mould appearance and an unpleasant odour. Condensation damages paint and plaster with mould patches and decays window frames and skirting boards.

Preventing condensation problems involve proper ventilation to free the room from moist air and to improve the heating facility to maintain constant temperature not affecting the humidity levels. Zones in the house where condensation will mostly occur is in the kitchen and bathrooms.

The best way to keep condensation low and prevent mould growth is to wipe away the water droplets with a cloth after finding them and allowing a passage of air in places of little air movement.

Eliminating unwanted cold surfaces, usage of special insulation to the outside wall and inside cavity walls to improve thermal dynamics may help overcome condensation. Introducing a dehumidifier is acceptable to prevent condensation as it draws in air, cools it removing moisture and reheats to re-circulate.

Faulty ventilation inside the room causes condensation to appear. Blocking off air vents, windows, and other exits cause condensation. Natural ventilation by unblocking or opening the windows often reduces the condensing effect. Different heating temperatures induce condensation in other rooms and so intermittent heating improves condensation and prevents mould growth.

Cavity walls and solid walls hold tiny water droplets after condensation and so insulating with special insulation materials can prevent condensation. Maintaining adequate room temperatures and wiping the water droplets at once will minimise the mould formation and condensation to happen. Places of little air movement causes condensation, and this can be reduced by fitting dehumidifiers that cools down air before re-circulating it as warm air.

Condensation disappears after cold months. Hence it is advisable to stay alert during the months of winter to overcome condensation.

What if condensation is not caused by poor ventilation?

Remember: condensation can be caused by a more serious condition such as rising damp or penetrating damp. Book your free damp survey with London Damp Specialists call us on for expert advice.

Still have mould and condensation?

If you have followed all the steps above and your property is still affected by condensation and mould mainly on your solid exterior walls we have a solution.

It is very common for mould and condensation to appear on your exterior cold solid walls due to the temperature of the exterior walls. When warm moisture comes in contact with these walls it is highly likely condensation and then mould will appear. The only solution for this problem is to apply thermal plasterboard to these exterior walls.

Condensation treatment can include:

  • Removal of blown plaster
  • Apply waterproof render
  • Fit thermal plaster board
  • Plaster with skim finish


What happens next?

Call London Damp Specialists on 020 7458 4864.

Alternatively, you can book a survey online by completing your details below.

Once you have submitted the form, one of our surveyors will be in touch with you to discuss your problems within 24 hours.

Your free, no obligation damp survey will typically only take between 15 to 30 minutes.

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