Mould Mates

Mould remediation

IICRC S520 certified. Fix the cause, not just the surface.

When mould has been driven by a leak, flooding, or moisture trapped inside your walls, ceilings, or floors, wiping it off does not fix it. Remediation does. Once the source is fixed, we seal off the area, remove the contaminated materials, purify the air, and have the results verified to the international S520 standard, so the mould does not come back. Servicing Brisbane, Gold Coast, and the Northern Rivers.

What sets us apart

  • Source-first: we identify the cause, not just the symptom
  • IICRC Certified Firm
  • Insurance-level documentation provided
  • Mould and water damage handled under one roof
  • Independent post-remediation verification available
  • Containment, negative air pressure, and HEPA air scrubbing

What remediation actually is

Mould remediation is the professional removal of mould following the international ANSI and IICRC S520 standard. Unlike a surface treatment, remediation physically removes porous materials containing mould and removes mould from semi-porous and non-porous materials and, before work takes place, addresses the moisture source that caused it.

The affected area is sealed off and placed under negative air pressure before anything is touched, so spores cannot spread to clean parts of your home. The air leaving the zone is scrubbed and filtered, so it does not contaminate other areas.

This is the right approach for mould caused by leaks older than 48 hours, flooding, hidden mould inside cavities or grossly contaminated materials. It handles mild through to severe contamination. Where required, post-remediation verification is carried out, by an independent third party, to confirm the air and surfaces are free of mould before the job is signed off.

Treatment or remediation?

Some mould problems are treatment jobs. Some are not. Being straight with you about the difference is how we keep your trust and your money spent efficiently.

Mould treatment when:

  • The mould is on the surface, and hasn't been for long. In rooms like the bathroom, bedroom, wardrobe, or living areas.
  • It is driven by humidity and airflow rather than a leak.
  • There is no water staining or a known leak behind it.
  • You want the visible mould cleared and your air quality improved quickly and affordably.

Mould remediation when:

  • There has been a leak running for more than about 12-48 hours, flooding, or a roof leak.
  • Mould is inside a wall or ceiling cavity rather than on the surface.
  • There is water staining, swelling, or a leak that has not been fixed.
  • The affected area is large, or it is a health-sensitive situation.
  • The growth has been active for a long period of time or the mould is inside a porous material.

If your mould is on the surface and driven by humidity rather than a leak and isn't grossly contaminated, you likely need a treatment and a management plan, which is faster and more affordable. We will tell you honestly which one your situation calls for before any work begins.

The remediation process

1. Inspection & Report

We inspect the property to identify the root cause of the mould. Once causation has been determined, we prepare a recommended scope of work and, if required, coordinate with licensed specialist trades who fix the source of the issue, such as leaks or defects.

2. Containment

We make the area safe using S520 tape and air scrubbers, and we contain the contaminated area to prevent spores from spreading and stop cross-contamination. Using thick plastic barriers and negative air pressure ensures no spread into uncontaminated spaces.

3. Fix Root Cause

Use one of our highly professional, licensed and insured recommended trades to fix the root cause of the mould. Or, source your own trades to rectify the situation. Once the source is fixed, mould removal can begin.

4. Remove Visible Mould

After the source is fixed we physically remove mould, sanitise and HEPA vacuum non-porous materials, and safely deconstruct and dispose of porous contaminated materials. This step is essential for a long-term fix. Mould has root structures (hyphae) that penetrate porous and non-porous materials, and failure to remove contaminated materials can allow mould to regrow.

5. Purify Air

Once mould has been physically removed, we purify and scrub the air for a duration suited to the job, leaving the environment free of spores and helping prevent mould from returning.

6. Sanitise Property

We then sanitise the entire property, inside and outside the containment zone, ensuring the space is clean and hygienic. If required, a PRV (post remediation verification) report will be conducted by a third party to ensure the property has been returned to normal fungal ecology.

7. Deconstruct Containment

When your property is mould-free, sanitised and returned to normal fungal ecology, we deconstruct containment.

8. Replace Materials

The final step is to reinstate the previously removed porous materials. Once this is complete, your property is mould-free and restored to its original condition or better.

Common questions

Why is remediation so much more expensive than a mould treatment?
Because it does far more. Treatment clears surface mould driven by humidity. Remediation deals with mould caused by leaks or flooding, or growing inside your walls, ceilings, or floors. It involves sealing off the area, putting it under negative air pressure, physically removing and disposing of contaminated materials, fixing the moisture source, purifying the air, and verifying the result to an international standard. You are paying for the mould to be gone and proven gone, not removed from the surface and potentially still hiding in a wall.
What is the S520 standard and why does it matter?
S520 is the international standard for professional mould remediation, set by the IICRC. It defines how mould should be assessed, contained, removed, and verified. It matters because it is the difference between someone guessing and a documented, repeatable process that insurers, inspectors, and committees recognise. Mould Mates is an IICRC certified firm, which many local operators are not.
Can I just paint over it or use a mould bomb?
No. Paint over mould and it grows through the paint, because the root structure and the moisture are still there. Mould bombs and foggers knock down surface spores but do nothing about mould inside a wall cavity or the leak feeding it. For anything beyond surface mould, those are wasted money. If your problem is surface only, a professional treatment is the right call, not remediation.
What is containment and why do you seal off the area?
Containment is sealing the work zone with physical barriers and putting it under negative air pressure, so that when we disturb the mould, the spores cannot drift into clean parts of your home. Without it, remediating one room can contaminate the rest of the house. It is one of the core reasons S520 work is more involved, and more effective, than a spray and wipe.
Who fixes the leak, you or a plumber?
A plumber does. We can recommend which trades are needed to complete the job. Our scope is to safely and efficiently remove the mould. A plumber would fix a leak before we start work and a builder would reinstate the remediated area once we finish.
What is post-remediation verification?
It is the check at the end that proves the job worked. After remediation, the air and surfaces are assessed, often by an independent third party, to confirm they are free of mould before the job is signed off. It is your evidence that the problem is resolved, which matters for insurance, sales, and peace of mind.

Who we help

Renters and tenants

Mould in a rental affects your health and your bond, and it is not always clear whose job it is to deal with it. We treat the mould, improve your air, and provide documentation that clearly records what we found and treated and address underlying moisture issues which helps when you raise it with your agent or landlord.

Owner-occupiers

You keep a clean home, and the mould keeps coming back anyway. We treat it properly, tell you exactly what is driving it in your home, and give you the option to keep it under control with a scheduled plan so you are not fighting it every wet season.

Property managers

Mould is one of the most common maintenance complaints you handle and one of the most disputed. We respond fast, treat between tenancies so a property is ready to lease, document every job, and offer recurring plans across your rent roll at a discounted rate. One reliable contractor for the whole portfolio.

Body corporate and strata

Common property mould gets political quickly. We provide clear documentation for committee approval and records, treat common areas and affected units, and can put the building on a recurring plan so it is managed rather than argued about.

Airbnb and short-stay hosts

A musty smell or a mouldy bathroom is a guaranteed bad review and a refund request. We treat the mould fast, and can schedule regular treatments around your booking calendar so your property always presents clean.

Business premises

Mould is never a good look for a business, nor is it good for your staff to be experiencing every day. We act fast with after hours options available so your business is not disrupted at all. You lose no foot traffic or staff hours getting your problem resolved.

Why work with us

Mould Mates was founded by Travis Ahern (Founder and CCO) and Nick Smart (Founder and Operations Manager). Travis holds the IICRC firm certification. Nick has 10 plus years of construction experience and is studying a bachelor's degree in Project Management.

We started in mould because we lived the problem ourselves: mouldy rentals, recurring health issues, and contractors who bleached the stain off and missed the cause. That is why we do it differently. We treat mould properly, we are honest about whether you need a quick treatment or a full remediation, and we would rather put you on a plan that keeps it gone than sell you the same job twice.