FAQs

We have been asked lots of questions about mould and how it is treated.

Here are some common ones that may answer the questions you have.

We understand that choosing mould remediation seems daunting and confusing. There is a lot of misinformation out there and a lot of unqualified cowboys in the industry. We are here to help. At mould mates we are a IICRC accredited firm. Qualified in the highest level of mould remediation methods.

Fill out the form below to inquire about a mould inspection

Are the chemicals you use dangerous?

No - Most of the chemicals we use are biodegradable and environmentally friendly.

What causes mould to grow inside homes?

Mould grows when excess moisture is present. Common causes include water leaks, poor ventilation, high indoor humidity, condensation, flooding, or plumbing issues. Mould spores are always present in the air, but they only grow when moisture conditions allow. When humidity is above 55% mould will begin to grow.

Is mould dangerous to my health?

Yes. Mould exposure can trigger respiratory problems, allergies, asthma flare-ups, headaches, fatigue, and skin or eye irritation. Long-term exposure, especially in damp environments, can significantly impact indoor air quality and overall health.

Why does mould keep coming back after cleaning?

Mould returns when the underlying moisture source is not resolved. Surface cleaning alone may remove visible mould, but without fixing leaks, ventilation, or humidity issues, mould will regrow. Surface treatment is a cheap quick bandaid fix which often will not completely solve the mould problem.

Can mould cause respiratory issues or allergies?

Yes. Mould spores and fragments can irritate the respiratory system, aggravate asthma, and cause allergic reactions such as coughing, sneezing, sinus congestion, and shortness of breath.

Is mould more dangerous for children, elderly people, or pets?

Yes. Children, elderly individuals, pets, and people with asthma or weakened immune systems are more vulnerable to mould exposure and may experience stronger or longer-lasting symptoms.

Should I leave the house during mould remediation?

In most cases, yes. For larger remediation works involving containment or removal of materials, temporary vacating may be recommended. We advise this on a case-by-case basis after assessment.

Is mould poisoning a real concern?

While the term “mould poisoning” is commonly used, the real concern is prolonged exposure to mould spores and mycotoxins, which can cause serious health effects over time. Professional remediation reduces this risk significantly.

How do you identify the source of mould?

We locate moisture sources using visual inspection, moisture meters, thermal imaging, and building assessment techniques. Treating mould without identifying the moisture source is ineffective.

Do you test the air or surfaces for mould?

Testing may be used where required, especially for insurance, rental disputes, or verification purposes. However, visible mould and moisture issues alone are sufficient to justify remediation in most cases.

Can mould exist behind walls or under flooring?

Yes. Mould commonly grows inside wall cavities, behind bathrooms, under carpets, and in roof spaces where moisture is trapped and ventilation is poor.

What is moisture mapping?

Moisture mapping identifies areas of elevated moisture within building materials. It allows us to pinpoint hidden issues and ensure all affected areas are treated correctly.

What is the difference between mould cleaning and mould remediation?

Mould cleaning removes visible mould from surfaces.
Mould remediation is a comprehensive process that includes identifying moisture sources, containing affected areas, removing contaminated materials where required, cleaning, drying, and preventing regrowth.

Do you remove mould or just kill it?

Professional remediation involves physically removing mould contamination, not just killing spores. Dead mould can still cause health issues if not properly removed.

What does “containment” mean during remediation?

Containment isolates affected areas using physical barriers and negative air pressure to prevent mould spores spreading to clean parts of the home during remediation.

When is full-scale mould remediation required?

Full-scale remediation is required when mould affects large areas, porous materials, wall cavities, or when occupants are experiencing health symptoms. This is the only recommended method for moderate to severe mould problems.

How long does mould remediation take?

Timeframes vary depending on the severity. Small jobs may take a day, while larger remediation projects can take several days, including drying and verification.

Are the products you use safe for families and pets?

Yes. We use professional-grade products designed for indoor environments and apply them using controlled methods. Safety precautions are always followed.

How do you stop mould from coming back?

We eliminate mould and address the root cause by identifying moisture issues, improving ventilation, controlling humidity, and providing prevention guidance.

How much does mould remediation typically cost?

Costs vary depending on the extent of contamination, access, and required remediation level. An on-site assessment is the best way to determine accurate pricing.

Is mould remediation covered by insurance?

In some cases, yes—particularly when caused by sudden water damage. Coverage depends on the policy and circumstances.

How do I know the mould has been properly removed?

Post-remediation inspection, moisture verification, and optional clearance testing confirm that remediation has been completed correctly.

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