Moulds reproduce by means of tiny spores which are invisible to the naked eye. These spores are present in the indoor air and can grow only on surfaces that are wet. Growth rate depends on the substrate affected, temperature, organic compounds and contaminants present etc.

Mould can grow immediately in certain cases but usually will take around 24-48 hours to start growing, hence it is best to deal quickly with water damage to mitigate any further damage from mould.

• What is the cost of water damage restoration?
• Who pays for electricity used by the hire equipment?