Leak Detection & Repair in Cardiff

Vetted & insured engineers Clear pricing before work starts G3-qualified for unvented cylinders No gas work — plumbing only

Ripping out a bathroom to find a leak is a last resort, not a method. In Cardiff we use acoustic listening, thermal imaging and tracer gas to pinpoint leaks first, so the repair opening is measured in centimetres, not rooms.

Cardiff water notes: Cardiff's Welsh Water supply from Brecon Beacons reservoirs is soft — scale is a minor player, and the city's plumbing work leans toward Victorian terrace pipework and the huge Cardiff Bay apartment stock. Cardiff's terraces in Roath, Canton and Grangetown carry classic Edwardian plumbing layouts, while Cardiff Bay and the city centre have added thousands of flats with communal risers and boosted mains. Mains supply here is managed by Welsh Water.

How non-invasive leak detection works

Each method has a job. Thermal cameras find hot-water and heating leaks fast; acoustic microphones hear mains-pressure leaks through solid floors; capacitance moisture meters map how far the water has travelled and in which direction concentration rises; tracer gas finds weeping joints that make no noise at all. Your Cardiff engineer selects the combination that suits the construction and reports what was found before any repair is priced.

Signs you have a hidden leak

The classic tells in Cardiff homes: a water bill that's risen with no change in use, background sound of running water at night, a warm stripe across a floor, skirting or plaster damage that returns after redecorating, and pressure loss on sealed systems. A ten-minute meter test — everything off, read, wait an hour, read again — is the cheapest first diagnostic you can do yourself.

Detection to repair, one accountable job

Detection without repair leaves you with a report and a hole in your week. Our Cardiff engineers do both: locate, expose the minimum area needed, repair the failed section — soldered, compression or correct plastic fitting — then pressure-test and confirm with follow-up readings that the moisture is drying rather than renewing. Cardiff's terraces in Roath, Canton and Grangetown carry classic Edwardian plumbing layouts, while Cardiff Bay and the city centre have added thousands of flats with communal risers and boosted mains.

Leak detection cost in Cardiff

A detection survey in Cardiff is a from-£149 fixed band depending on property size and methods needed, agreed before booking. The repair is quoted separately once the leak is proven — you're never committed to a repair price before anyone knows what's actually wrong. Trace-and-access is commonly covered by buildings insurance; our reports are written to support that claim.

Frequently asked questions

Can you find leaks in underfloor heating in Cardiff?

Yes. Thermal imaging shows the loop layout and the anomaly at the leak point, and pressure testing confirms which circuit is losing water. UFH leak repairs are precise work — locating first is essential.

What causes hidden leaks in Cardiff homes?

Corrosion pinholes in ageing copper, failed soldered or compression joints, abraded pipes rubbing on joists, nail and screw punctures from past work, and weeping pushfit connections. Cardiff's Welsh Water supply from Brecon Beacons reservoirs is soft — scale is a minor player, and the city's plumbing work leans toward Victorian terrace pipework and the huge Cardiff Bay apartment stock.

Which areas of Cardiff do you cover?

All of Cardiff, including Pontcanna, Whitchurch and Rhiwbina, plus surrounding villages and suburbs.

How do you find a leak without ripping up floors?

Acoustic listening equipment, thermal imaging, moisture mapping and tracer gas, used in combination. The point is to prove the location from the surface so any opening-up is minimal and targeted.