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Restoration2 min read

Mould in a home: causes, risks and cleaning

Black stains, a musty smell: where mould comes from, and why cleaning is not enough if the damp remains.

Moulds are microscopic fungi that grow as soon as there is enough moisture. In a cluttered or poorly ventilated home, they find ideal conditions behind furniture, in corners and on textiles.

Where does the damp come from?

  • condensation: a poorly aired home, laundry drying indoors, insufficient heating;
  • leaks from outside: roof, façade, window frames;
  • rising damp in the walls;
  • leaking pipes.

As long as the cause is not dealt with, the mould comes back.

The risks

Mould can irritate the eyes and airways, and worsen asthma or allergies. Older people, young children and vulnerable people are more sensitive to it. If you have symptoms, talk to your doctor.

Cleaning properly

  • protect the occupants and ventilate during the work;
  • remove materials that are too badly affected: textiles, cardboard, mattresses;
  • clean the surfaces, then treat them;
  • let them dry and check.

A small stain on a smooth surface can be cleaned yourself. A large area, a whole wall or a lingering smell calls for more thorough treatment.

And then

We tell you what we observed about the likely cause of the damp. To fix it, a contractor or a damp specialist takes over.

This article gives general guidance. It does not replace advice from a doctor, a lawyer or an approved professional for your situation.

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