Derry Leak Detection by PCLA

Hidden leaks can cause serious damage if left unresolved. PCLA provide professional leak detection in Derry, using non-invasive methods to find leaks quickly and provide insurer-ready reports.

028 8280 0120

Over 250 five-star Google reviews!

Do you suspect a hidden leak?

If you’ve noticed damp patches, reduced water pressure, or mould growth, you may have a leak in your property. Our leak detectors locate the source accurately, preventing further damage and helping you claim costs back through insurance.

Call 028 8280 0120

How we find your leak

Acoustic Detection

We use acoustic microphones and listening equipment to detect the sound of escaping water within pressurised pipes. This method pinpoints leaks in mains water or central heating systems without damaging floors or walls.

Thermal Imaging

Our engineers use infrared thermal imaging cameras to identify temperature changes that reveal hidden water leaks. This non-invasive method helps locate leaks under floors, behind walls, or within central heating systems.

Tracer Gas Testing

We inject a safe, inert tracer gas into empty pipework and track its movement with specialised gas sensors. This technique accurately locates leaks in buried or concealed pipes where water cannot escape to the surface.

Moisture Mapping

We use protimeter moisture meters to measure and map damp levels across walls, floors, and ceilings. The readings help confirm leak sources, track the spread of water damage, and support insurance reporting and repairs.

Why Derry clients choose PCLA for leak detection

  • Non-invasive methods that minimise disruption.
  • Insurer-ready reports with photos and readings.
  • Engineers with experience across all building types in Derry.
  • Repairs arranged once the leak is located.

Worried about a possible leak?

Our Derry specialists locate hidden leaks quickly and cleanly.
Call 028 8280 0120 to request your free quote today.

Recent cases in Derry

Eglinton, July 2025

Leak under a concrete floor. Located with acoustic equipment and confirmed by tracer gas. Repairs later covered by insurer.

Drumahoe, September 2025

Central heating system losing pressure. Source identified within 90 minutes and repaired the same day.

Cityside, March 2025

Damp patches in terraced property. Leak traced to bathroom pipe joint hidden in wall cavity.

What clients say

“They found the leak quickly and gave us a clear report for our insurer. Saved us time and stress.”
TomasDerry
“Professional service. They traced a heating leak without having to lift half the floor. We couldn’t believe how accurate it was.”
SineadEglinton

Helpful leak detection guides

If you’re dealing with a leak, these guides answer the common questions.

FAQs – Leak Detection in Derry

Professional leak detection in Derry typically costs between £500 and £1,000 for most residential properties. The final price depends on your property size, the detection methods needed, and how accessible your pipes are. We provide transparent, upfront quotes with no hidden charges, and we can often split costs between detection and access work for insurance claim purposes. Many homeowners find their insurance covers the detection cost under their trace and access policy—we’ll help you check your cover before starting work.

Yes, we provide 24/7 emergency leak detection across Derry, Londonderry, and surrounding areas including Waterside, Cityside, Culmore, and Strathfoyle. For urgent situations like visible water damage, flooding, or rapidly increasing water bills, we aim to reach properties within 2-4 hours. Our emergency service uses the same non-invasive detection methods as standard appointments, so you won’t face unnecessary property damage during urgent callouts.

No. We use non-invasive technology including thermal imaging cameras, acoustic sensors, moisture meters, and tracer gas detection to find leaks without lifting floors or breaking through walls. In over 85% of cases, we locate the exact leak position without any destructive work. When access is necessary, we keep it minimal, targeted, and tidy up professionally afterwards. This approach saves you money on repairs and means less disruption to your home.

Most residential leak detection visits in Derry take between 1.5 and 3 hours, depending on your property size and the leak’s location. Straightforward cases are often resolved within 2 hours. We’ll provide you with a written report including photos and recommended repairs on the same day, and many repairs can be quoted on-site so there’s no delay getting your plumbing sorted.

Most UK home insurance policies include £5,000 in “trace and access” cover under the Escape of Water section. This typically covers the costs of finding and accessing the leak but not always the repair itself. We’re approved by major UK insurers and provide detailed written reports with photos within 48 hours to support your claim. Before starting work, we can offer free telephone advice about your specific policy and help you understand what’s covered.

Common signs include unexplained increases in your water bill, damp patches on walls or ceilings, musty smells, warm spots on floors (from central heating leaks), the sound of running water when taps are off, or reduced water pressure. You can check your water meter—turn off all taps and appliances, note the reading, wait an hour without using water, and check again. If it’s changed, you likely have a leak somewhere.

General plumbers often locate leaks by lifting floors, removing sections of wall, or digging trenches—which creates extensive damage and high repair bills. Specialist leak detection companies use advanced equipment like thermal imaging, acoustic sensors, and tracer gas technology to pinpoint the exact leak location first. This means targeted access, minimal disruption, and lower overall costs. We find leaks that general plumbers have missed, often saving homeowners thousands in unnecessary excavation work.

Yes, we provide leak detection services throughout Derry, Londonderry, and all surrounding areas including Waterside, Cityside, Creggan, Culmore, Strathfoyle, Eglinton, and the wider Derry and Strabane district. We’re familiar with the older housing stock in areas like the Bogside and newer developments around Ebrington, so we understand the different plumbing challenges across the city. Contact us to confirm coverage for your specific location.

Need leak detection in Derry?

Suspect a Leak? We’ll Find It — Without the Stress or the Mess.

Leaks are unsettling, but fixing them doesn’t have to be.
Our Derry engineers use advanced non-destructive methods to locate hidden leaks accurately, saving you time, money, and disruption.

Call today for a fast, accurate survey.

Call 028 8280 0120

We’re trusted by homeowners and insurers across Northern Ireland.

Areas we cover around Derry

We attend properties across:

  • Strabane;
  • Limavady;
  • Claudy;
  • Newbuildings;
  • Eglinton;
  • Drumahoe.

We also provide leak detection in nearby areas

We also work in the towns neighbouring Derry:

Leak Detection Guides

How Much Does It Cost to Have a Leak Detected?

How Much Does It Cost to Have a Leak Detected?

We break down professional leak detection pricing, explore advanced methods like thermal imaging and acoustic listening, and explain how insurance might cover costs. Plus what untreated leaks could cost you. Remember, detecting leaks early prevents costly repairs and extensive damage.

Read More »

Disclaimer

INTRODUCTION
By using the services of PCLA (“we,” “us,” or “our”), you confirm that you have read, understood, and agree to this Disclaimer. If you do not agree, please do not use our services.
SCOPE OF LEAK DETECTION SERVICE
PCLA’s role is strictly limited to introducing you to independent third-party ‘leak detection’ contractors who provide leak detection services. We do not supervise, manage, inspect, or control any aspect of the services provided by these contractors. It is your responsibility to evaluate and select a contractor based on your own judgment.
INDEPENDENT THIRD-PARTY CONTRACTORS
All leak detection services are performed by independent third-party contractors. PCLA does not verify their qualifications, expertise, or suitability. No agency, partnership, or employment relationship exists between PCLA and the contractors.
PAYMENTS AND FEES
All payments for services must be made directly to the contractor. PCLA does not handle payments and does not receive commissions, referral fees, or other financial rewards for introductions.
DISCLAIMER OF WARRANTIES AND GUARANTEES
PCLA makes no guarantees or promises about the quality, reliability, or suitability of any contractor or the services they provide. This includes any promises the law might assume, such as services being suitable for your specific needs.
LIMITATION OF LIABILITY
PCLA has no responsibility for the quality or outcome of services provided by third-party contractors. Any concerns or claims must be directed to the contractor.
PCLA cannot be held responsible for any loss, damage, or injury caused by contractors, except where the law says we must take responsibility (such as for personal injury or death caused by our own negligence).
DISPUTE RESOLUTION
PCLA cannot mediate, investigate, or assist with disputes between you and the contractor. All concerns must be addressed directly to the contractor.
GOVERNING LAW
This Disclaimer is governed by the laws of Northern Ireland.
ACCEPTANCE OF TERMS
By continuing to use our services, you confirm that you agree to this Disclaimer.