If you’ve got damp patches, staining, pressure loss, or recurring mould and mildew, it’s hard to know what’s really causing it without proper checks. A hidden leak can quietly keep causing damage until the source is confirmed.
NI Leak Detection helps homeowners in Ballymena with water leak detection services: we locate the source of a leak, explain what we find in plain language, and carry out Leak Repair and other plumbing repairs.
Call to get clear options for finding and fixing your leak.
We’ll explain the approach and likely next steps on the call.

When the leak source isn’t obvious, the safest way forward is to reduce uncertainty and make the next step clear.
We reduce the guesswork by narrowing down the most likely source of the leak.
You'll limit any ongoing damage by asking us to find the cause.
We'll put in place a targeted repair plan (and complete repairs as soon as possible).
For next steps including Trace and Access reporting where needed, helping you make informed decisions.
We focus on practical diagnosis and clear decisions, not vague assumptions.
Heating & plumbing engineers, who specialise in leak detection and repairs.
A clear, structured approach to testing and narrowing down the source of the leak.
Straightforward communication and practical guidance throughout.
We can provide insurer-ready reports when needed (Trace and Access), using insurance-safe wording.
Helping homeowners and commercial landlords in Ballymena and across Northern Ireland.
Quick questions first to understand symptoms, affected areas, and urgency.
Structured testing to narrow down the source, including pressure tests where appropriate.
Findings explained in plain language (what's likely happening and where).
Repair options outlined; repair completed where appropriate and agreed.
Documentation provided (photos and video when helpful, a written summary, and a Trace and Access report if requested).
Including any follow-on work that may be needed, such as optional damage restoration if you want us to help, or support for your chosen contractor.
A few practical notes:
To locate hidden water leaks, we may use a mix of methods and technology depending on the symptoms and pipework:
Using acoustic sensors, an acoustic ground microphone, and ultra-sensitive microphones to help pinpoint leak noise.
Thermal imaging and infrared checks using thermal imaging cameras (including FLIR where appropriate).
Tracer gas (hydrogen/nitrogen) and Tracer Gas Technology for hard-to-find leaks.
Moisture mapping using moisture meters to track how water is moving through materials.
Pressure tests where appropriate (for example with a hydraulic pressure testing pump), alongside other testing.
Pipe locating for buried water pipes and Underground Leak Detection on suspected mains runs.
(including RIDGID inspection camera / endoscope) and other cameras for visual checks in voids and service routes.
Leak detector tools selected to match the job, with a focus on clear findings over guesswork.
Leak issues are not always obvious at first. Consider getting help if you’re seeing:
Or staining on ceilings or walls that keeps recurring despite treatment.
Mould that keeps returning in the same area despite cleaning and ventilation.
A musty smell or a damp feel in a room that persists.
Boiler pressure repeatedly dropping (sealed systems).
Or intermittent air in the lines that can't be explained.
Warped skirting, or bubbling paint that indicates water damage.
If water is near electrics, prioritise health and safety and contact a professional immediately.
Common domestic leak sources we investigate include:
Often around grout lines, trays, and concealed pipework.
Including radiators and pipework on central heating and other heating systems
Hidden leaks in underfloor heating systems requiring specialised detection.
Affecting water pipes and incoming supplies, often causing pressure issues.
Where buried pipework is suspected of leaking, requiring specialised equipment.
That may need burst pipe repair and urgent isolation support to prevent damage.
Trace and Access refers to locating the leak and accessing the area to complete the repair, with documentation of what was found and what work was carried out.
Most UK home insurance policies distinguish between fixing the pipe (which is often a maintenance cost) and the damage caused to get to it. "Trace and Access" focuses on the latter.
If you're making an insurance claim, your insurer will likely need proof of where the leak was and what work was required to reach it.
Clear, fact-based documentation with photos of the leak and the access work.
A detailed record of what we found, helping you substantiate your claim.
Itemised breakdowns where needed to help you evidence the work.
While we cannot confirm your specific policy coverage, we give you the clear facts and professional evidence you need to support your claim.
If you’re seeing damp, staining, pressure loss, or recurring mould and you want clarity on what’s causing it, the safest next step is to talk it through and arrange a visit if needed.
Leak detection is a structured process of checks and tests to narrow down where water is escaping from, then confirming the most likely source. We explain what we find and what it means for the next step.
Where appropriate and agreed, we can carry out a plumbing repair once the leak source is identified. If additional works are needed afterwards (for example reinstatement or damage restoration), we’ll explain what that may involve and the options available.
Not always. It depends on where the leak is and what access is required to confirm and repair it. We aim to keep disruption to a minimum where possible and focus on targeted access rather than unnecessary opening-up.
Condensation often links to ventilation, cold surfaces, and seasonal patterns. A leak is more likely when damp or staining keeps returning in the same spot, there’s a musty smell that persists, flooring becomes soft, or boiler pressure drops repeatedly. We can help you make sense of the symptoms and confirm the cause.
Yes. If you need documentation for next steps, we can provide a Trace and Access report detailing findings, access, and repair notes, with photos where appropriate.
Cover depends on your policy wording and the insurer’s assessment. Insurers often ask for evidence of the cause and what work was required to access and repair the leak. We can provide documentation your insurer may request, but we cannot confirm cover or acceptance.
We are not an insurer or claims handler. What we can do is provide clear findings, repair notes, and documentation that you can share with your insurer if needed. We can also refer you to an independent Loss Assessor.
If you can, share:
Where you’re seeing the issue (room/area);
What you’re noticing (damp patch, staining, mould, pressure loss);
When it started and whether it’s getting worse;
Any recent plumbing/heating work;
Photos of visible damage where possible.
If it’s safe to do so, limit water exposure to electrics and contact a professional. If there’s active ingress or visible escalation, treat it as urgent and call for guidance on the safest next step. If it appears to be a burst, we can advise on immediate steps and arrange burst pipe repair where appropriate.
We cover all of Ballymena and surrounding areas, including:
Ahoghill; Cullybackey; Broughshane; Kells.
We also provide Leak Detection Services across Northern Ireland.
Our engineers are local, and we also cover nearby towns and cities including:
- Leak Detection Armagh
- Leak Detection Belfast;
- Leak Detection Bangor
- Leak Detection Derry;
- Leak Detection Lisburn;
- Leak Detection Newtownabbey.
Call us to find out how we can help you today.

NI Leak Detection delivers expert, non-invasive leak detection services for homes, businesses, and industrial sites across Northern Ireland. Using cutting-edge technology and a skilled team, we pinpoint leaks with precision, preventing unnecessary damage. Whether dealing with concealed water or gas leaks, or structural issues, our prompt and reliable solutions help you avoid costly repairs and safeguard your property.
NI Leak Detection, part of the PCLA group.
Property Claims Loss Assessors Ltd (PCLA) are authorised and regulated by the Financial Conduct Authority. FRN 933781.
NI Leak Detection is a trading name of Property Claims Loss Assessors LTD. By using the services of NI Leak Detection, you acknowledge and agree that all leak detection services are provided by independent third-party contractors introduced to you by NI Leak Detection.
NI Leak Detection acts solely as an introducer and does not supervise, manage, or control the services performed by third parties. All payments for services must be made directly to the respective third-party contractors. NI Leak Detection receives no commission or financial reward for providing this introduction service.
NI Leak Detection disclaims any and all responsibility or liability for the quality, workmanship, or suitability of services provided by third-party contractors.
To the fullest extent permitted by law, NI Leak Detection shall not be held liable for any loss, damage, or defects arising out of or in connection with the services provided by third-party contractors. Any concerns, disputes, or claims must be addressed directly to the contractor responsible for performing the services.
NI Leak Detection makes no representations or warranties, express or implied, regarding the services offered by third-party contractors, including but not limited to warranties of merchantability, fitness for a particular purpose, or quality of work.
This disclaimer is governed by and construed in accordance with the laws of the United Kingdom.