What causes mould in buildings?

 What causes mould in buildings?

Condensation is the leading cause of mould in homes across the UK.

It most commonly occurs in mold remediation  parts of the home where there are high moisture levels – in bathrooms, kitchens, and around windows.

When the temperature falls to a level known as the dew point, water vapour in the air forms into water droplets.

If water vapour comes into contact with a surface in the home that’s below the dew point, such as an uninsulated external wall or a cold window, then water droplets will form.

If left untreated, the surface can become damp and create the conditions for mould to grow.

Catherine Noakes, professor of Environment Engineering for Buildings at the University of Leeds, said older and poorly insulated properties are more prone to this.

Mould can also be caused by daily tasks which create excess moisture.

“Sometimes it’s occupant behaviour – things that we all do and we cannot change,” Prof Noakes said.

“We all shower, we all cook, and we all dry washing at home.”

Prof Noakes warned that mould conditions could be made worse this winter if people don’t put on the heating because of high energy bills.



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