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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.

From £450 Sub-cm Accuracy Full Report Insurance-Grade
Get a Price in 60 Seconds 07807 815181
Sky Guard performing electronic leak detection on a commercial flat roof
£450
From
< 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

Our report is accepted by insurers as evidence of cause and extent of damage.

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?
Electronic leak testing + a full written report: £450–£950 depending on roof size. 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 at survey stage.
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.

Ready for a roof that actually lasts?

Free survey, no hard sell, transparent pricing. Speak to a real roofer in 30 seconds.

Get Free Estimate Call 07807 815181