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Waterproofing service

Leak Detection & Repair in Sydney

Find the source before you demolish. Moisture mapping, water testing and targeted leak repairs for showers, balconies, roofs and walls.

  • Licensed & insured
  • AS 3740 / AS 4654 compliant
  • Written workmanship warranty
Technician inspecting a wall surface for signs of water damage

Free site inspection

Fixed-price written quote

Water rarely appears where it enters. A stain on your ceiling might come from a shower two metres away, a balcony door sill or a roof penetration. Guessing leads to unnecessary demolition and leaks that keep coming back.

Our leak detection service uses methodical testing and moisture measurement to find the true source, so the repair is targeted and effective.

Signs you need leak detection & repair

  • Ceiling stains with no obvious cause
  • Leaks that only appear in certain weather
  • Damp walls or skirting next to wet areas
  • Rising water bills (plumbing leak suspected)
  • Mould returning after cleaning
  • Previous repairs that didn't work

Our leak detection methods

  • Moisture mapping — non-invasive meters to trace the spread of moisture in walls, floors and ceilings
  • Isolated water testing — testing one element at a time (shower, screen, waste, door, window) to pinpoint the source
  • Flood testing — for balconies, showers and roof areas
  • Visual inspection — of sealants, grout, flashings, outlets and penetrations

When it's a plumbing leak

If testing points to a pressurised water pipe or drain, we will let you know and recommend engaging a licensed plumber. Once the plumbing is fixed, we can repair the waterproofing and finishes.

From detection to repair

Once the source is confirmed, we provide a clear quote for the repair — whether that is a new shower membrane, balcony threshold detail, roof penetration seal or window perimeter sealant.

Our leak detection & repair process

  1. 1

    Discuss symptoms

    We learn when and where the leak appears.

  2. 2

    Moisture mapping

    Readings trace the moisture back towards its source.

  3. 3

    Isolation testing

    Elements are water-tested individually to confirm the entry point.

  4. 4

    Findings report

    Photos and readings are provided with repair recommendations.

  5. 5

    Targeted repair

    We fix the confirmed source with the right waterproofing solution.

Why choose us for leak detection & repair

Find the source before any demolition

Methodical, documented testing

Covers showers, balconies, roofs and walls

Honest referral for plumbing issues

Targeted repairs save money

Photo report for insurers

Recent project photos

Leak Detection & Repair FAQs

It depends on the size and complexity of the investigation. We provide a price upfront, and the findings help avoid unnecessary demolition.

In most cases yes. Moisture mapping and isolation testing are non-invasive.

Yes, including photos, moisture readings and recommendations — useful for insurers and strata.

We will advise you to engage a licensed plumber and can then repair any waterproofing or finishes affected.

Stop leaks before they become costly repairs.

Book a free, no-obligation inspection with Sydney’s waterproofing and painting specialists.