Common causes include:
Flood and sewer back-ups need special attention as they likely contain bacteria, viruses, or chemical hazards.
Mould growth may be black, brown, or green. It may have a fuzzy or patchy texture. Watch for signs like:
To prevent mould from growing indoors, you need to control indoor moisture. This is why it’s important for a building to be properly constructed and maintained.
Keep your home well ventilated and control humidity. Keep the relative humidity below 50% to keep mould from growing. You can buy a hygrometer at hardware stores to measure indoor relative humidity. Below are some ways you can control humidity.
Current as of: November 3, 2016
Author: Environmental Public Health, Alberta Health Services
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