Worried about mould in your home? Discover mould types, danger levels and all of the health risks you, your family and even your pets are exposed to.
Mould growth in homes almost always begins with excess moisture, whether from a basement leak, roof damage, high indoor humidity, condensation around windows, or poor bathroom ventilation.
Mould reproduces by releasing microscopic spores into the air, which can affect indoor air quality and human health.
According to Health Canada and the CDC (Centers for Disease Control and Prevention), mould spores are naturally present in the air, both indoors and outdoors and the problem starts when those microscopic spores land on damp materials like drywall, wood framing, carpet, or insulation and have enough moisture and organic material to feed on.
Within 24–48 hours, mould colonies can begin forming.
Certain types of mould develop depending on the environment: Cladosporium and Penicillium often grow on damp fabrics and walls, Aspergillus thrives in areas with persistent humidity, and Stachybotrys chartarum (commonly called black mould) typically forms on heavily water-damaged materials with long-term saturation.
In short, mould doesn’t randomly appear.
It grows where moisture problems are left unresolved, and the type of mould that forms is directly linked to the level of water intrusion, ventilation issues, and the materials affected.
If you are dealing with mould growth anywhere in your home, understanding mould species identification is the first step in protecting your residential property and occupant health through proper indoor air quality management.
The following information includes the various types of household mould, how to identify it, where it typically grows and the health hazards and toxicity levels that go with it.
Produces dangerous mycotoxins that can trigger severe respiratory illness, neurological complications, immune system dysfunction, and chronic inflammatory responses. Recognized as the most hazardous common residential mold species requiring immediate professional mold abatement.
Demonstrates rapid airborne spore dispersal patterns that require immediate mould removal services. Can trigger allergic reactions, respiratory tract infections, and hypersensitivity pneumonitis. Certain strains produce harmful mycotoxins affecting human health.
Mold exposure can trigger serious health complications, particularly for vulnerable populations including young children, elderly individuals, people with respiratory conditions such as asthma or COPD, immunocompromised individuals, and household pets. If you identify significant mold growth, water damage, or experience persistent respiratory symptoms in your residence, consult with certified mold remediation specialists and healthcare professionals immediately.
From the initial visual inspection, right through to complete mould removal, we offer complete, start-to-finish mould remediation services.
Take a minute to send us a message and tell us about what you're experiencing. We'll get back to you right away, we promise.