Leak Detection / Manly

Leak Detection Manly

Hidden leaks in walls, floors, slabs and ceilings across Manly, found before anything is opened up, with a fixed price before we start.

Our guarantee: 12 months on our workmanship, in writing. What it covers

$0 call-out fee — any hour, any day · Available 24/7

Leaks in Manly come from the same two places as most of its plumbing work: salt air that shortens the life of anything metal, and older apartment blocks still on their original common pipework, where one failure reaches several homes. On the ocean side, water in the ceiling is as likely to come from a corroded gutter as from a pipe.

Bath filled with bright fluorescent yellow dyed water during a leak detection dye test
A dye test in progress: the bath filled with water carrying fluorescent tracer dye.
Yellow tracer dye seeping up through the grout lines of a tiled bathroom floor, marking the path of a hidden leak
The same dye coming up through the floor outside the bath. Where it surfaces is where the water is escaping — no floor lifted to find it.

Many Manly blocks are decades old and still on their original common pipework. A leak there can affect several apartments, and establishing whether it is a private or common-property fault is often the first job.

Salt air takes years off gutters and flashings on the ocean side. A rusted gutter leaks into the eaves rather than over the edge, so a ceiling stain after rain points to the roof plumbing before the pipes.

Cylinders in internal cupboards often have no floor waste. A slow leak from one soaks into the floor and the apartment below. Rust at the base or water on the cupboard floor are the warnings.

Fixed price quoted before we start. $0 call-out fee.

(02) 9139 8945

How It Works

01

We discuss your symptoms — high water bills, damp patches, mould — to narrow the search area.

02

We use acoustic listening devices, thermal cameras, moisture readings and, where it suits, tracer dye to pinpoint the leak non-invasively.

03

We provide a clear report of the leak location and recommend the repair approach.

04

We carry out the repair — patching, pipe replacement, or relining as appropriate.

Common Questions

Usually. We use acoustic detection, thermal imaging and dye testing to locate leaks before anything is opened up.

Probably not. A leak that only appears in rain usually comes from the roof, gutters or flashings, which corrode early this close to the beach. We check the roof plumbing first.

Yes, 24/7 with no call-out fee. Travel times to the far northern beaches are longer, and we will give you an honest ETA when you call rather than a standard one.

How we find hidden leaks, the signs to look for, and what it involves.

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from 37 Google reviews
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Excellent service from Mr Clog! They responded quickly to my leaking pipe, identified the problem, and fixed it efficiently. The plumber was professional, friendly, and explained everything clearly. The pricing…
d.s1zzGuildford · October 2026
Just want to thank the team from Mr Clog for coming out today for an emergency water leak under my house. They were quick, reliable and fair priced. Thanks guys.
JasonAdded to site May 2026
Can’t rate this business high enough. I had a very concerning toilet blockage and they came straight out and found and rectified the problem immediately. The price was very reasonable and they went above and be…
Donna Y.Penrith · October 2026

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Prefer not to call? Send a few details and we’ll come back to you with an upfront fixed price.

How urgent is it?

In a hurry? Call (02) 9139 8945 — we answer 24/7.

$0 call-out fee — any hour, any day. Available 24/7, 365 days a year.

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