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MOULD

WHAT IS IT?

Mould is a type of fungus that comes in a variety of colours and can grow in damp areas inside your home. Mould grows where there is too much humidity from water leaks, cooking, showering, flooding, etc. It can grow on wood, paper, fabrics, drywall, insulation, inside walls or above ceiling tiles. When mould finds a damp place to grow, it can contribute to poor indoor air quality.

WHAT ARE THE HEALTH AFFECTS?

  • Eye, nose and throat irritation
  • Coughing and mucous build-up
  • Wheezing and shortness of breath
  • Worsening of asthma symptoms
  • Other allergic reactions

HOW DO I KNOW IF I HAVE A PROBLEM?

  • Not all mould is obvious to detect, so it is important to check for the presence of mould anywhere that is damp, especially where water damage has occurred.
  • Inspect your home for visible signs of mould or areas with excessive moisture. Look for stains or discolouration on floors, walls, window panes, fabrics and carpets or a musty "earthy" odour. If necessary, contact an expert for help.

IF YOU DISCOVER MOULD

  • If the contaminated surface is small: clean the mould by yourself, by using water and dish detergent. There's no need to use bleach.
  • If the affected area is large: take precautions to protect your health. In such a case, consider hiring a professional to clean it up.
  • Fix the underlying cause, whether due to water damage or excessive humidity
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If you suspect a mould problem that you cannot solve on your own, Health Canada recommends that you contact a trained Indoor Air Quality Investigator for advice on building-related aspects of air quality. These investigators can do a visual inspection to identify areas of concern and make recommendations for improving the situation.

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If you rent your home or workspace, speak to your landlord about any mould problems. Landlord and tenants rights and obligations fall under provincial and territorial jurisdiction. Information on landlord/tenant issues, rights and responsibilities is available from your provincial/territorial government.