From Victorian terraces in Roath to apartment towers on the Bay, Cardiff hides its pipework well. We pinpoint escaping water with tracer gas, thermal imaging and acoustic sensors — one fixed price, agreed up front.
Cardiff generates more hidden-leak enquiries than anywhere else we cover. The capital's blend of century-old terraces, converted flats and modern apartment schemes means water can travel a long way from its source before it shows on a ceiling — and the city's landlords and block managers know how expensive guessing gets.
Our engineers reach Cardiff from Neath in about 45 minutes along the M4, and we schedule the capital most working days. A survey typically takes two to four hours depending on the property, and the fee never moves: £480 + VAT whether the leak turns up in the first ten minutes or takes the full toolkit to corner.
We regularly act for homeowners, for letting agents managing student houses in Cathays, and for management companies responsible for communal systems in Cardiff Bay blocks. Every visit closes with an insurance-grade document — thermal imagery, moisture mapping and photographs — written to stand behind a trace and access claim.
Local knowledge
The terraced streets of Roath, Cathays, Canton and Grangetown went up in a coal-boom rush between the 1880s and 1914, and their plumbing has been reworked by every generation since. Original lead rising mains, abandoned-but-live pipe runs under suspended timber floors, and bathrooms squeezed into rear additions all produce leaks that surface rooms away from where the water actually escapes.
The city's newer stock fails differently. Apartment schemes around Cardiff Bay and the centre run pressurised communal systems where a weeping joint in one flat stains a ceiling two floors below. Interwar semis in Whitchurch, Rhiwbina and Heath often carry heating pipes chased into solid floors, while the plastic push-fit plumbing in newer estates at Pontprennau and St Mellons tends to let go at fittings concealed behind plasterboard.
WHAT WE FIND IN CARDIFF
Coverage
Our fixed-price survey takes in every corner of the capital — the student streets of Cathays, the waterside blocks of Butetown and the Bay, the northern suburbs from Llandaff through Llanishen to Lisvane, the western wards of Ely and Fairwater, and the eastern estates out to St Mellons — plus Radyr, Tongwynlais and Taffs Well on the CF15 fringe.
Postcode areas covered: CF3 · CF5 · CF10 · CF11 · CF14 · CF15 · CF23 · CF24
Our methods
Cardiff work spans everything from lath-and-plaster terraces to steel-framed towers, so we match the method to the building. Acoustic listening and correlation excel on the long supply runs beneath terraced streets; tracer gas — a harmless hydrogen-nitrogen mix — rises through screed and tarmac to flag buried heating and mains failures; thermal imaging maps warm pipe routes behind Victorian plaster without disturbing it; and a borescope inspects ceiling voids and boxed-in stacks where cutting would mean redecorating an entire room.
A safe hydrogen-nitrogen mix escapes through the smallest defects — traced above ground to pinpoint the leak.
Non-toxicInfrared surveying reveals temperature anomalies behind floors, walls and ceilings.
Non-contactAmplifies the distinctive sound of pressurised water escaping from mains, copper and MDPE pipework.
UndergroundA flexible camera inspects wall cavities, floor voids and boxing-in through the smallest access point.
Minimal accessComparative readings across plaster, timber and concrete map water migration and confirm findings.
Evidence-gradePricing
Many leak detection companies charge £100+ per hour with no way of knowing the final bill. Our Trace & Find survey is a fixed £480 + VAT — however long it takes to find your leak.
A complete leak detection survey with the right equipment for your property.
no hourly rates · no hidden costs
Once located, repairs are quoted separately — every repair varies by leak type, pipework and access.
Priced individually to reflect the size, complexity and requirements of each project.
Answer a few quick questions and we will point you to the right fixed price.
Cardiff FAQs
Answers specific to Cardiff properties and how we work in the area.
We travel from Neath, about 45 minutes along the M4, and can normally offer a Cardiff appointment within one to two working days. Weekend slots run 9am to 2pm on Saturdays and Sundays — call 01639 999 999 and we will find you the earliest gap.
Yes. Pressurised communal systems respond well to acoustic and thermal survey, and we can isolate individual branches to establish whether the escape starts inside your flat or on a shared riser. The report states the leak position plainly, which matters when a management company or a neighbouring leaseholder has to act on it.
It is. The survey fee is fixed regardless of property size or how long the search takes. Any repair or excavation afterwards is a separate, clearly quoted job — and by then we have already confirmed exactly where to open up.
Yes. The document you receive sets out the confirmed leak position with thermal images, moisture readings and photographs, in the format insurers expect. Trace and access cover on most Cardiff buildings policies is designed to refund precisely this kind of professional detection.
That points to a leak on your underground supply pipe, often beneath a path or driveway. Do not dig. Tracer gas and ground microphones locate the failure from the surface, so any excavation happens once, in the right place.
Book a non-invasive Trace & Find survey for a fixed £480 + VAT — we locate the source fast, with a full report for your records or insurer.
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