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Ceiling leak detection

Ceiling Leak Detection in Sydney

A stain on the ceiling is a symptom, not the leak. We work back from the mark to the wet area above — a bathroom, balcony or roof — and find the real source.

Ceiling leak detection

The ceiling is the symptom, not the source

A brown ring or a sagging patch tells you water is arriving — but not where from. Painting over it only hides the problem until the next time.

We trace the stain back to the wet area directly above it, whether that’s a bathroom, a balcony or the roof, so the actual leak gets fixed.

Tracing a ceiling water stain back to its source
The problem

Signs of a ceiling leak

All of these mean water is reaching the ceiling from somewhere above.

A brown ring or stain

A spreading mark, often with a darker edge where it’s dried.

Sagging or bulging plaster

Plasterboard bulging downward where water has pooled.

Flaking or bubbling paint

Paint lifting, cracking or blistering on the ceiling.

A mould patch

Mould forming around the damp area of the ceiling.

An active drip

Water dripping, steadily or only after water use above.

It’s under a wet area

The stain sits below a bathroom, balcony or flat roof.

Inspecting the wet area above a leaking ceiling
What’s behind it

Where the water is coming from

A ceiling leak is almost always fed by the wet area directly above it.

  • A leaking shower or bathroom on the floor above.
  • A failed balcony or terrace membrane above the room.
  • A roof or box-gutter leak tracking down.
  • A plumbing penetration or waste in the floor above.
  • Condensation and poor ventilation adding to it.
How we find it

We trace it up to the source

We work from the stain upward to the exact wet area and point that’s leaking.

  • Read the stain — moisture mapping shows how fresh and how large the wet area is.
  • Check above — we inspect the bathroom, balcony or roof directly over it.
  • Image and confirm — thermal imaging and testing pinpoint the source.
  • Report the findings — a clear result so the real leak gets fixed.
Non-invasive, no demolitionMoisture mappingThermal imagingTargeted testingWritten report
Upfront pricing

A clear price before we start.

Every inspection starts at a fixed first-hour rate, confirmed with you before any work. No call-out surprises, and no obligation to proceed with a repair.

  • $299 inc GST for the first hour on site.
  • A fixed price agreed before we start.
  • A written findings report for strata or insurance.
Typical inspectionIncluding the first hour on site
$299 inc GST

Fixed first hour on site · confirmed before we start

  • No-dig, non-invasive detection
  • Thermal imaging & moisture mapping
  • The leak located and explained
  • A clear written findings report

Guide pricing only. We confirm a fixed price before any work starts — no surprises.

Questions, answered

Ceiling leak detection — FAQs

Why not just repair the ceiling?
Repairing the ceiling without finding the source means the stain comes straight back. We find what’s feeding it first, so the repair lasts.
Can you tell what’s leaking above?
Yes — that’s the whole job. We trace the stain back to the bathroom, balcony or roof that’s the real source.
Is it urgent?
A sagging, water-heavy ceiling can be a safety risk. If it’s bulging or dripping heavily, call us and keep clear of it.
What does it cost?
Our first hour on site is $299 inc GST, confirmed before we start.

Ceiling stain that keeps coming back?

Book an inspection and we’ll trace it to the real source above — not just the mark.