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24-hour emergency call-outs, 7 days a week

Non-Invasive Leak Detection Specialists

Detection
Without Destruction

Suspect a leak? We pinpoint the exact source using thermal imaging, tracer gas, and moisture mapping — no guesswork, just a clear answer.

A leak left alone only gets worse, and more expensive to fix.

  • 24-hour emergency call-outs, 7 days a week
  • Covering London, Essex & surrounding areas
  • Reports suitable for insurance claims
  • No unnecessary excavation, ever
Thermal imaging camera reading a temperature difference on site

24-hour emergency call-outs, 7 days a week

Water where it shouldn't be? Don't wait for it to spread.

What we find, and fix

Every investigation starts the same way — establishing what's actually happening before anyone lifts a floor.

  • Water Mains & Central Heating Leaks

    Detecting hidden leaks in underground water mains, central heating systems, and pipework before they cause further damage.

  • Internal & External Leak Detection

    From leaks hidden in your walls to pipework buried underground, we locate the exact source so repairs can be targeted and precise.

  • Damp & Wet Patch Investigation

    Not sure if it's a leak, rising damp, condensation, or humidity? We identify the true cause, so you're not paying to fix the wrong problem.

  • Leak Repairs

    Where a repair is needed, we only excavate exactly where the problem is, no unnecessary disruption.

See the methods we use

Areas we cover

Based in London, covering London, Essex and the surrounding areas — including:

London

  • Hampstead
  • Highgate
  • Barnet
  • Finchley
  • Mill Hill
  • Totteridge
  • Muswell Hill
  • St John's Wood
  • Richmond
  • Wimbledon
  • Dulwich
  • Chelsea

Essex

  • Chigwell
  • Loughton
  • Buckhurst Hill
  • Epping
  • Theydon Bois
  • Brentwood
  • Ingatestone
  • Billericay
  • Chelmsford
  • Saffron Walden

Don't see your area listed? We're also able to attend locations outside our standard service area, subject to a travel fee. Get in touch for a personalised quote.

What our customers say

5.0from 3 Google reviews
Had an ongoing dispute with the flat above over a suspected leak coming through our ceiling. Montel's survey gave us exactly the evidence we needed, professional, impartial and well documented. The report held up when presented to building management.

Steven

a month ago

Read all reviews on Google

Book a leak investigation

Prefer to talk it through first? Call or email us, or fill out the form and we'll get back to you.

1Choose a datePick the day that suits you. We'll call to agree a time — that way you get a slot we can genuinely keep.

August 2026

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No date selected yet. Crossed-out days are ones we're already committed elsewhere.

Need someone today? We run 24-hour emergency call-outs, 7 days a week.

07377 923413
2Your details
3Photos or videosOptional, but genuinely useful — seeing the problem beforehand often tells us what to bring.

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4Before you book

You'll get an email confirming the date straight away.