Moisture assessment and leak investigation
Every mould problem starts with moisture. A moisture assessment maps where water is in your walls, floors and ceilings, traces where it's coming from, and tells you what needs fixing before it turns into mould or structural damage.
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Finding water you can't see.
Water rarely stays where it starts. A slow shower leak can wet the wall cavity behind it for months; a roof leak can travel along a ceiling joist and show up rooms away. By the time you see staining or mould, the moisture has usually spread further.
We measure moisture in building materials with pin and non-invasive meters, use thermal imaging to see temperature differences that point to water, and record humidity and dew point to separate a leak from condensation.
You get a moisture map of the affected area and the most likely source, whether that's plumbing, failed waterproofing, the roof or gutters, rising damp, condensation or poor ventilation.
Signs you need moisture assessment.
- Staining, bubbling paint or swelling skirting boards
- Damp or cold patches on walls
- Water bills higher than usual
- A shower or bath that may be leaking into the wall
- Mould with no obvious cause
- Damp after heavy rain
Recognise any of these?Get it checked before it spreads. We'll find the cause.
Water damage becomes mould damage in 24 to 48 hours.
Every hour water sits, it spreads further into walls, floors and ceilings. Once mould grows, it affects the air everyone breathes, especially people with asthma or allergies.
- Hour 1Water spreadsInto walls, under floors, through ceilings.
- 24–48 hrsMould can startWet materials need drying within this window.
- DaysDamage buildsMusty smells, staining, swelling timber.
- WeeksBigger repairsMore removal, longer disruption, poorer air.
Sources: US EPA guidance; Better Health Channel.
How a moisture assessment works.
Select a step to see what happens.
Ready when you are.Active leaks, flooding and fire damage get a team immediately. For everything else, we book the earliest time.
What your moisture assessment includes.
- Moisture mapReadings across affected and surrounding areas.
- Thermal imagesShowing where water has travelled.
- Likely sourceLeak, waterproofing, roof, rising damp or condensation.
- Next stepsRepairs needed, and whether drying or remediation is required.
Who it's for.
Homeowners, and the professionals who manage buildings and claims. We tailor the reporting to whoever needs it.
- Homeowners
- Landlords & property managers
- Strata
- Insurers
- Builders
Trusted in Melbourne homes and buildings since 2012.
Certified technicians, honest advice and results you can see in the readings.
“We'd been battling mould in our son's bedroom for years. After Mould Squad found the leak in the wall and treated the room properly, his asthma has noticeably improved. I wish we had called them sooner.”
“Nil is a genuine guy and provides an amazing service when it comes to water damage restoration. Our house was damaged recently due to heavy rains and Nil and his team have done some amazing work restoring our roof that had been damaged by rain.”
“Really impressed with the clear communication. No scare tactics, just honest advice, photos and a practical plan. The team turned up on time, kept everything tidy and followed up with air quality results so we knew it had actually been fixed.”
“Would definitely recommend mould remediation services from Mould Squad. They are the best in the industry and have done an amazing job at our home, making it mould free.”
Moisture and leak detection questions, answered.
Still unsure? Talk to a technician. It costs nothing to ask.
How do you find a hidden leak without opening walls?
We use moisture meters, including non-invasive meters that read through the surface, and thermal imaging, which shows the temperature difference that wet materials cause. Together they show where water is and usually point to the source.
Is it a leak or condensation?
We measure humidity, surface temperature and dew point. Condensation forms on cold surfaces when moist air meets them; a leak shows a moisture pattern that spreads from a source. The fix is very different, so it matters.
Do you repair the leak?
We find the source and tell you exactly what needs repairing and which trade is needed. Once it's fixed, we dry the structure and remediate any mould.
Can damp walls cause mould?
Yes. Mould needs moisture, and damp plasterboard and timber are ideal. Drying wet materials quickly is the best way to prevent mould.
Do you check for rising damp?
Yes. Rising damp shows as damp, salt marks or a tide line low on walls. We take readings at different heights and compare them with the rest of the wall to tell rising damp from a leak or condensation, then tell you what repair it needs.
Moisture assessments across Melbourne and Victoria.
We're based in Dandenong South and work across all of Melbourne and regional Victoria, for homes, rentals, strata buildings and commercial sites.
- South-eastDandenong, Berwick, Cranbourne, Pakenham, Frankston and the Mornington Peninsula
- EastBox Hill, Glen Waverley, Ringwood and the Yarra Ranges
- NorthPreston, Coburg, Epping and Craigieburn
- WestFootscray, Sunshine, Point Cook and Werribee
- CBD and inner suburbsMelbourne CBD, Southbank, Richmond, St Kilda and surrounds
- Regional VictoriaGeelong, Ballarat, Bendigo, Gippsland and beyond
Not sure if we cover your area? Call 1300 677 823.
Found mould or water damage? Let's fix it properly.
Free quote, no obligation. For leaks and flooding, we dispatch a team immediately.