Keep Humidity Levels in Your Home Down to Reduce the Risk of Mould

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 Effects?
People living in homes with mould and damp conditions are more likely to experience:
- 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.
What Can I Do?
- Prevent mould from growing by making sure you:
- Check for wet spots in your house, such as damp basements, leaking sinks, cold closets on exterior walls, etc.
- Repair any water leaks as soon as you notice them; clean up immediately after any flood.
- Use the exhaust fans when cooking or showering and check that your clothes dryer and range hood vent to the outdoors.
- Seal your tubs and sinks tightly.
- Throw out basement clutter.
- Measure humidity and keep it low, about 50% in summer and 30% in colder weather. If necessary, use a dehumidifier.
- 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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IMPORTANT NOTICE


