Skip to content

Electronic Leak Detection Find any leak.
Without ripping up the roof.

Stop paying roofers to guess. Electronic leak detection pinpoints the exact location of any breach in your flat roof — to the centimetre — without cutting or drilling. Full written report. Then we fix what we found.

£500 Test + Report Sub-cm Accuracy Photo + Plan Report Zero Damage
Get a price in 60 seconds 07807 815181
Commercial single ply flat roof with rooflight upstands
£500
Test + report
< 1cm
Accuracy
48 hr
Report turnaround
Zero
Damage to roof
Why electronic

Better than every other leak-finding method.

Most leak-hunting is guesswork wrapped in a high call-out fee. Electronic detection is engineering.

No guesswork

No more "let's try patching this and see". We know exactly where the water is getting in.

No damage

We don't cut, drill, or strip anything to find the leak. The roof stays intact.

Insurance evidence

The report shows where the membrane is breached, with photos and a marked plan, so you can pass it to your insurer or loss adjuster.

Saves money

Avoid a full roof strip-out when only 2 m² actually need repair. Repairs from £250 once we've found the breach.

How it works

From booking to fixed roof — 5 steps.

  1. 1

    Setup

    We wet the roof surface lightly and place a charged electrode around the perimeter.

  2. 2

    Scan

    A probe scans the roof systematically. Any breach in the membrane completes an electrical circuit.

  3. 3

    Pinpoint

    The exact location of every breach is marked on the roof — to the centimetre.

  4. 4

    Report

    You get a full written report with photos, plan drawing, and recommended repairs.

  5. 5

    Fix

    We can fix the leaks on the same visit, or you can take the report to another contractor — your choice.

FAQ

Leak detection questions

How does electronic leak detection actually work?
We use the principle that single ply, EPDM, GRP, and felt are all electrical insulators — whereas water (and the deck below) conducts electricity. By placing a low-voltage electrode on the roof and scanning the surface, any breach in the waterproof layer completes a circuit and we know exactly where the leak is.
How accurate is it?
Sub-centimetre. We can find pinhole punctures that visual inspection would never catch.
How much does it cost?
A flat £500 for the electronic test and a full written report. Repair costs are quoted separately based on what we find — typically £250–£500 for small breaches.
How long does it take?
A standard domestic roof: 1–2 hours on site, report within 48 hours. Commercial roofs are quoted per size.
Will the test damage my roof?
No. We use very low voltage and need only a damp surface — the roof is left in the same condition as we found it (apart from now knowing where the holes are).
What if you can't find the leak?
On any roof type where electronic detection works, we will find it. The technique is highly reliable on single ply, EPDM, GRP, and modern felt. On built-up bitumen with multiple layers and complex flashings, additional thermal or smoke testing may be needed — we'd advise this up front, before we book the test.
Can you repair on the same visit?
Most of the time, yes — we carry common repair materials. For larger or non-standard repairs we'll quote separately and book in.
From the blog

Leak and repair guides

Repairs & Maintenance

How to Find a Leak in a Flat Roof (Without Ripping It Up)

Why flat roof leaks are so hard to trace, which checks to do before paying anyone, and how electronic leak detection pinpoints the breach — from £500.

Read the guide
Repairs & Maintenance

10 Common Flat Roof Problems and How to Fix Them

The ten flat roof problems we see most often across South Yorkshire, why they happen, which ones are preventable and how to fix them if you catch them early.

Read the guide
Seasonal

The Hidden Dangers of Wet Weather on a Damaged Flat Roof

A damaged flat roof may not look urgent — until heavy rain hits South Yorkshire. The hidden problems wet weather causes and why small issues turn costly fast.

Read the guide
Areas we cover

Electronic Leak Detection across South Yorkshire

We are based in Kilnhurst, between Rotherham and Mexborough, and cover every town below. Pick yours for local postcodes, the roofs we see most there and recent jobs nearby.

Free quote visit · No hard sell · Transparent pricing

Ready when you are.

Speak to a real roofer in 30 seconds — or get a transparent price range in 60.

Get a price in 60 seconds Call 07807 815181