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Wall leak detection

Wall Leak Detection in Sydney

Damp, staining or bubbling paint on a wall means water is getting into the cavity. We locate the entry point — a wet area behind it or ingress from outside — without opening the wall first.

Book an Inspection 1300 863 001
Wall leak detection

Water in a wall has to come from somewhere

A damp patch or bubbling paint on a wall means moisture is getting into the cavity — from a wet area behind it, a window or door, or the building’s exterior.

We locate where it’s entering and work out whether it’s an active leak, external ingress or rising damp, so the right fix is applied.

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Moisture mapping a damp internal wall in Sydney
The problem

Signs of a wall leak

These mean moisture is sitting inside the wall.

A spreading damp patch

Darker, damp-feeling areas that grow over time.

Bubbling or flaking paint

Paint blistering, cracking or peeling off the wall.

White salt deposits

Efflorescence — chalky white marks — where water wicks through render.

Mould or a musty smell

Mould on the wall or skirting, or a persistent damp smell.

Rotting skirting

Skirting boards or architraves swelling or crumbling at the base.

It worsens with rain or use

Damp that tracks with rain outside or water use on the other side.

Thermal imaging a wall cavity to find water ingress
What’s behind it

Where the water gets in

Wall leaks come from one of a few directions — finding which is the job.

  • A shower or wet area directly behind the wall.
  • Ingress through the external wall, render or brickwork.
  • A failed window or door flashing letting rain in.
  • A plumbing pipe in the wall cavity.
  • Rising damp as opposed to an active leak — we tell them apart.
How we find it

We locate the entry point

We read the wall and work out the direction the water is coming from before anything is opened.

  • Map the wall — moisture readings show where the damp is worst and where it’s dry.
  • Image the cavity — thermal imaging reveals the wet area inside the wall.
  • Diagnose the direction — we tell an active leak from external ingress or rising damp.
  • Report the findings — a clear result so the right repair is done.
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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.

Related detection

Related wet-area leaks

Not quite your situation? These are the closest wet-area services we cover.

Shower Leak Detection

The shower recess — failed membrane or grout, traced behind the tiles.

Water Damage & Mould

Finding the moisture source behind damage and mould.

Ceiling Leak Detection

Water showing in the ceiling, traced to the room above.

Questions, answered

Wall leak detection — FAQs

Is it a leak or just rising damp?
That’s exactly what we determine. Moisture mapping and thermal imaging let us tell an active leak from rising damp or external ingress, because each needs a different fix.
Do you open the wall to find it?
Not to locate it. We pinpoint the source non-invasively first, so any opening up is targeted.
Can you find a leaking pipe in the wall?
We can locate where moisture is entering the cavity and whether a concealed pipe is the source, then explain the repair.
What does it cost?
Our first hour on site is $299 inc GST, confirmed before we start.

Damp patch spreading on a wall?

Book an inspection and we’ll locate where the water is getting in — without opening the wall to find out.

Book an Inspection 1300 863 001