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Condensation and mould in your home

Condensation on a windowCondensation can often be seen on windows on a cold morning, and occurs when warm moist air hits cold surfaces. This process causes the air to condense and form droplets of water, often resulting in patches of black mould. The mould does not always grow in the same room that the moisture comes from. This primarily occurs between the months of October and April. It can happen when the weather is cold, even if it is dry, and is usually caused as a result of day to day living.

Where do you find condensation?

It can be found on and adjacent to windows, in the corners and edges of rooms, behind and inside wardrobes and cupboards – especially if they are against an external wall.

What causes condensation?

There are 3 main causes of condensation:

  • Too much moisture in your home - for example drying clothes indoors
  • Insufficient ventilation - for example not openeing windows when cooking or showering
  • Not having the heating on enough meaning the property is cold

Are my damp symptoms caused by condensation?

Not all dampness is caused by condensation, sometimes dampness can be as a result of:

  • leaking internal or external pipes
  • roof leaks caused by broken, missing or faulty tiles, guttering or chimney flashings
  • rising damp because of a defective damp proof course or faulty rendering, mortar joints or blocked cavities

Dampness of this nature will often result in a ‘tide mark’ and can occur at any time of the year.

If you think that your home may have a leaky roof, pipe or has a 'tide mark' somewhere, contact us.

Condensation inside windows

If there is condensation between the panes of glass in your double-glazed windows please report this as a repair.

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