01 / Prevalence
1 in 2
Mould or dampness is reported in Australian homes far more often than most owners expect.
ABS / AIHW housing data
[ I suspect mould ]
Mould Anxiety? It pays to be sure.
Thermal capture, moisture readings, odour notes and optional air sampling reveal the conditions before the wall turns black.
Book a diagnostic[ the broader problem ]
Mould starts with moisture, not black spots.
Half of Queensland homes show signs of dampness or mould in any 12-month window. By the time it shows on the wall, moisture and spore counts have usually been building for weeks. The earlier the diagnostic, the smaller the fix.
02 / Recurrence
40%
Mould regrew within 12 months in homes where remediation didn't address the root cause.
Remediation follow-up data
03 / Source check
Find the cause
A visible patch may be the symptom. The diagnostic checks moisture, extent and source before the fix gets bigger.
Diagnostic protocol
[ signs of invisible mould ]
Stop living in mould uncertainty.
Five quiet signs the house gives you first.
Spotting on laundry or stored fabrics
Towels, linen and clothes developing dark specks in cupboards, wardrobes or sealed rooms — usually where soft goods sit close to a wall or in still air.
RevealsHumidity reservoir behind storage and ventilation failure.
Black grout in bathrooms and laundries
Black-staining grout in showers, splashbacks or wet-room corners — and the contamination usually extends past where it's visible into substrate.
RevealsWaterproofing failure or persistent humidity load.
Mould keeps returning after cleaning
Regrowth in the same spot after a clean. Surface treatment isn't a diagnosis — the conditions that caused the bloom are still in the room.
RevealsActive moisture source or unaddressed affected material.
The air feels heavy in certain rooms
A musty smell that won't air out, rooms that feel close or damp, or a persistent sense that something's not quite right indoors.
RevealsHidden moisture, ventilation failure or HVAC carrying spores.
Recent leaks, storms or wet weather
After a roof leak, plumbing failure or significant storm event, materials can stay wet long after they look dry to the eye.
RevealsMaterial that's still saturated despite looking surface-dry.
[ the reframe ]
Mould is not a hygiene problem.
Pests happen to the house. Burst pipes happen to the house. Mould is a plumbing, waterproofing, or ventilation failure that hasn't surfaced yet. Not your guilty reminder.
Spray and pray.
Bleach clears what you see. On tile or grout, it works.
ButIf moisture's still feeding it, the patch returns within weeks.
Wash, soak, repeat.
Hot wash, vinegar soak and sun-drying do rescue spotted clothes, hopefully.
ButThe spores came from somewhere. Fresh laundry keeps spotting.
Crack a window.
Cross-flow ventilation lowers indoor humidity. It's worth doing.
ButYou can't ventilate a wall cavity, or an AC compressor leaking behind the unit.
[ how we diagnose ]
Four ways to look behind the surface.
When you suspect mould but can't see it, the protocol stacks methods so nothing diagnostic-worthy gets missed.
Thermal mapping
Surface temperature differentials across walls, ceilings, floors, plumbing lines and HVAC penetrations.
RevealsHidden moisture, cold bridges and leak paths.
Moisture metering
Pin and pinless readings at surface and depth across timber, gypsum, masonry, tile substrates and skirting cavities.
RevealsActive wetting and moisture migration.
Air sampling
Continuous hygrometer logging on-site, plus optional indoor and outdoor control air samples to an accredited lab.
RevealsHumidity load and airborne spore count.
Lab analysis
Independent sample handling and lab analysis where spore count, species profile or claim-ready evidence is needed.
RevealsContamination indicators and evidence support.
[ what we surface ]
Finding the source of mould stops the cycle.
The patch is the symptom. These are the failure modes we typically trace it back to.
Roof leaks
Failed flashings, displaced tiles, ageing penetrations around vents and chimneys, sarking gaps and box-gutter overflow.
DocumentsWater entry
Wall and window leaks
Failed window flashings, render cracks, blocked weep-holes and brick-cavity moisture migrating into internal linings.
DocumentsWall entry
Blocked gutters and drainage
Blocked gutters, downpipes discharging at the base of walls, and surface water pooling against slab edges instead of running to drain.
DocumentsSurface water
Leaking showers and bathrooms
Ageing waterproofing under shower bases, sealant gaps at tile junctions and compromised membranes behind tiles and at hob upstands.
DocumentsFailed seal
Hidden plumbing leaks
Hairline supply leaks behind walls, weeping shower-waste fittings and slab penetration faults that wet surrounding material long before it shows.
DocumentsConcealed leak
Leaking appliances
Dishwashers, washing machines and fridge water lines slowly seeping into joinery, flooring and the wall behind them.
DocumentsSlow drip
Air conditioner leaks
Overflowing drip trays, blocked or poorly graded condensate lines, and split-system heads seeping into the wall behind them.
DocumentsAC condensate
Poor ventilation
Exhaust fans dumping into roof voids instead of outside, recirculating range hoods, blocked subfloor vents and rooms with no cross-flow.
DocumentsTrapped humidity
Damp under the house
Undercroft dampness, slab-edge moisture, poor site fall and groundwater migrating up into bearers, joists and finished floors.
DocumentsGround water
[ suspected mould FAQ ]
When something doesn't feel right.
Common questions for owners and tenants who suspect a problem but can't yet see one.
That's still a useful answer, and you'll get it documented. A low-risk report with prevention guidance is valuable to have on file, especially as a tenant, owner or buyer.