Moisture in the air
Water Vapour
What Causes Mould In The Home?
Indoor mould indicates a moisture problem, which can come from three sources: leaks through your roof or wall cladding, plumbing failures, or condensation caused by poorly managed water vapour. Put simply, even when your roof, walls and plumbing aren’t leaking, excess water vapour can condense on cold surfaces, creating the damp conditions mould needs to grow.
The Mould Chain
Natural Surface
wood, plaster
Below Dew Point
Vapour Condensates
Surface Mould
Starts to grow
Embedded Mould
Matured within 48hrs
Structural Damage
Potential Wood Rot
Condensation outside is a sign to check your subfloor, where similar conditions can cause moisture to condense on cold surfaces.
OUR PROCESS
How we break the mould chain
Breaking the mould chain means removing existing mould and addressing the conditions that let it grow. Our **AS-IICRC S520:2025 compliant process** combines mould removal, air sealing and properly managed ventilation to control moisture pathways and eliminate regrowth.
STEPSpray Foam Tas ProcessAS-IICRC S520:2025 CompliantOther CompaniesUncertified Mould Removal Companies
STEP 1Assessment
Spray Foam Tas ProcessAS-IICRC S520:2025 Compliant
Comprehensive assessment including moisture testing, thermal imaging and identification of contributing defects.
Other CompaniesUncertified Mould Removal Companies
Often a visual inspection only, with no moisture testing.
STEP 2Site Preparation
Spray Foam Tas ProcessAS-IICRC S520:2025 Compliant
Proper preparation and containment to prevent cross-contamination.
Other CompaniesUncertified Mould Removal Companies
May not adequately seal or contain the work area.
STEP 3Root Cause Elimination
Spray Foam Tas ProcessAS-IICRC S520:2025 Compliant
Seals the subfloor, wall perimeters and works with the ventilation system to remove the moisture pathway at the source.
Other CompaniesUncertified Mould Removal Companies
Typically focuses on surface mould removal only, without addressing the source.
STEP 4Internal Remediation
Spray Foam Tas ProcessAS-IICRC S520:2025 Compliant
Professional mould removal using HEPA filtration and industry best-practice methods.
Other CompaniesUncertified Mould Removal Companies
May use basic cleaning methods without HEPA filtration or follow industry standards.
STEP 5Preventative Rectifications
Spray Foam Tas ProcessAS-IICRC S520:2025 Compliant
We check and rectify ventilation and other building defects to help prevent mould from returning.
Other CompaniesUncertified Mould Removal Companies
Ventilation is often overlooked, leaving moisture sources untreated.
MOULD & MOISTURE ASSESSMENT
Inspect. Measure. Report.
Understand what is happening before remediation begins.
Surface temperature
Locate cold surfaces.
Material moisture
Check moisture in building materials.
Relative humidity
Measure moisture levels in the air.
Dew point
Assess condensation risk.
How We Eliminate Internal Mould Causes
One of the reasons, we are so confident in our system and offer our industry benchmark guarantee is due to our universal retrofitting vent system for existing services. By externally venting internal vapour sources,we eliminate the risk of vapour condensating inside the building envelope and causing mould growth.
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Bathroom Fan with Backflow Damper
Range Hood with Backflow Damper
Dryer Vent System with Backflow Damper
Advanced Closed-cell Subfloor Sealing
SYSTEM
BENEFITS
Eliminates stack pressure
Keeps warm air in and stops cold air from being drawn in.
Prevents cold air from entering
Seals gaps and penetrations to keep your home warmer and more comfortable.
Protects structure and air quality
Helps control moisture, reduces the risk of mould and keeps your home healthier.
Improves comfort and efficiency
A more consistent indoor temperature all year round with lower energy use.
THE RESULT
MOISTURE & MOULD HOME CHECK
Could moisture be finding its way into your home?
Answer a few quick questions to understand what may be contributing to moisture or mould in your home and see how it can be addressed.
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OUR PROMISE
24-Month Mould-FREE Guarantee
We don’t just tell you how to stop mould returning.We guarantee it won’t come back.
Many mould treatments only clean what’s visible. Our approach goes further by addressing the moisture source and the airflow pathway feeding the problem.
Moisture source addressed
Airflow pathway addressed
24-month written guarantee
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Prefer to talk?Call 03 6361 6580
*Guarantee terms and eligibility apply.
You’ll receive a detailed report with:
- Moisture readings
- Thermal assessment
- Photographic documentation
- Remediation works completed
- Pre and post verification
- Recommendations for ongoing performance
The Benefits
A healthier home
Warmer, more comfortable floors
Reduced uncontrolled airflow
Moisture pathway control
Helps prevent mould from returning
Long-term protection for your home
permanent mould removal
Frequently Asked Questions
What causes mould to keep coming back?
Mould is the sign of an underlying moisture problem. Cleaning the visible mould may remove what you can see, but if the moisture source and pathway remain, the conditions that allowed the mould to develop can remain too. That is why our approach starts by identifying where the moisture is coming from before remediation begins.
Can ventilation alone fix mould?
Not necessarily. Ventilation can help remove humidity generated by showering, cooking and drying clothes, but effective mould remediation also requires the underlying moisture source to be identified and addressed. Ventilation works best as part of a broader moisture-control strategy, not as the only solution.
Can moisture underneath my house contribute to mould inside?
Yes, particularly in homes with suspended timber floors. Moisture can exist beneath the building, and stack pressure can draw subfloor air through gaps, floor penetrations and wall cavities towards occupied areas of the home.
What does closed-cell spray foam do?
Closed-cell spray foam can form part of a continuous underfloor insulation and air-barrier system. Spray Foam Insulation Tasmania seals the subfloor perimeter along with service penetrations, junctions and other pathways before insulating the floor, helping restrict uncontrolled movement of subfloor air, moisture, water vapour and dust into the living space.
Do you block the subfloor vents?
No. During installation, vents may be temporarily covered so the wall cavity above them and past the skirting boards can be properly sealed. Once the work is complete, the covers are removed so the vents can continue ventilating the subfloor rather than providing an uncontrolled pathway towards the living space.
What happens to existing mould?
Existing mould is addressed as a separate remediation stage. Where required, the process includes physical mould removal with HEPA air filtration, aligned with AS-IICRC S520:2025, followed by post-remediation documentation and verification.
Will you check bathroom fans, rangehoods and clothes-dryer ventilation?
Yes, where these systems may be contributing to the moisture problem. The assessment can include bathroom extraction, rangehood and clothes-dryer exhaust systems, with external venting rectifications recommended where required.
How do I know the work has actually addressed the problem?
Verification is built into the process. This can include final thermal inspection, checking for remaining air-leakage or thermal-bridge issues, and before-and-after evidence together with an onsite report so the completed work can be documented and reviewed.