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Bathroom leak detection

Bathroom Leak Detection in Sydney

Not every bathroom leak is in the shower. We trace leaks across the whole room — floor, hob, vanity, toilet and waste points — back to the exact source.

Book an Inspection 1300 863 001
Bathroom leak detection

The leak isn’t always where you think

A damp patch outside the bathroom doesn’t always mean the shower. The floor waste, the vanity plumbing, the toilet connection or the floor membrane can all let water escape.

We check the whole room rather than assuming, so you fix the actual source instead of guessing and re-opening the same wall twice.

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Inspecting a Sydney bathroom floor and vanity for leaks
The problem

Signs of a bathroom leak

These point to water escaping somewhere in the room.

Damp in the next room

Staining or soft flooring in a room that shares a wall with the bathroom.

A swelling vanity

Cabinetry or kickboards swelling, lifting or discolouring at the base.

Lifting floor or vinyl

Tiles, vinyl or timber lifting, cupping or feeling spongy underfoot.

Staining near the toilet

Damp or marks around the toilet base or the waste connection.

A ceiling stain below

A spreading mark under an upstairs bathroom.

A persistent musty smell

Damp that lingers even with good ventilation.

Checking a bathroom floor waste and vanity plumbing
What’s behind it

Where bathroom leaks start

Beyond the shower, these are the usual culprits.

  • A failed floor waterproofing membrane under the tiles.
  • A leaking floor waste or puddle flange.
  • Plumbing penetrations under the vanity or basin.
  • A poor seal at the toilet connection or waste.
  • Failed grout, silicone or a hob/door junction.
How we find it

We check the whole room

Rather than guess, we read the whole floor and the fittings to find where water is actually escaping.

  • Map the floor — moisture readings across the room show where the damp concentrates.
  • Image behind surfaces — thermal imaging reveals wet areas under tile and behind the vanity.
  • Test the fittings — we check wastes, penetrations and junctions to isolate the source.
  • Report the findings — a clear result you can act on, documented if you need it.
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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.

Ceiling Leak Detection

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

Wall Leak Detection

Damp and staining in a wall or cavity, traced to source.

Questions, answered

Bathroom leak detection — FAQs

How is this different to shower leak detection?
Shower detection focuses on the recess. Bathroom detection looks at the whole room — floor, vanity, toilet and waste points — when the source isn’t clearly the shower.
Will you need to lift the floor?
In most cases, no. Moisture mapping and thermal imaging locate the source first, so any opening up is targeted, not exploratory.
Do you fix it as well?
We locate and prove the leak, then explain the repair so it’s done right.
What does it cost?
Our first hour on site is $299 inc GST, agreed as a fixed price before we start.

Damp bathroom, no obvious cause?

Book an inspection and we’ll trace it across the whole room to the exact source.

Book an Inspection 1300 863 001