Moulds are forms of fungus (mildew, yeast and mushrooms, etc.) that grow indoors and outdoors. Mould releases spores into the air, which are then breathed in by people. They grow excessively in areas called amplification sites, which are areas where the temperature, moisture content and food source exist at the right levels. Exposure to mould can cause different types of illnesses. Common places mould grows include attics, window sills, fabrics, carpets and walls in basements, kitchens, bathrooms and laundry rooms.

How does it affect you?

Some moulds are more hazardous than others, and different people have different responses to mould exposure. Those with allergies, existing respiratory conditions or suppressed immune systems are especially susceptible to health problems from mould exposure.

Many moulds found in the home are fairly allergenic, such as aspergillus or cladosporium usually found in toilets and air ducts, which are non-toxic. However, they can trigger allergy symptoms such as watery eyes, rashes and a sore/itchy throat.

Moulds such as stachybotrys atra (a.k.a. black mould) can be more harmful. Causing reactions such as nausea, chronic coughing, rashes, fatigue and long-term headaches.

What should you do?

If you are unsure about the quality of the air in your house or are concerned about musty odours or dampness you can book an Indoor Air Quality (IAQ) test with a certified professional like AmeriSpec. Have a mould/air test completed in key areas of your home.

Mould can grow in damp or wet areas in your home caused by water leaks, flooding, or high humidity. It can also result from everyday activities like cooking, showering, doing laundry, or having an excessive number of plants. It can grow on wood, paper, fabrics, drywall and insulation. It can hide inside walls or above ceiling tiles.

To prevent mould, fix any moisture problems right away and control humidity levels in your home. If you already have mould, it’s important to clean it up right away using proper protocols.

Want to learn more? AmeriSpec’s certified professionals inspect, identify and address any problems in your home, so that you can rest assured that your family is living in a safe and healthy home. Learn more by downloading your copy of the AmeriSpec Healthy Homes brochure at, or by contacting your local AmeriSpec office.