From slate terraces above the Menai Strait to student houses off the High Street, Bangor's hidden leaks rarely announce themselves until the damage is done. We pinpoint them with tracer gas, thermal imaging and acoustic equipment — at a price agreed before we set off.
Bangor may be one of Britain's smallest cities, but its plumbing tells a complicated story. The university has filled Upper Bangor and Garth with shared houses whose pipework has been chopped and changed for decades, while family homes stretch from the Victorian streets of Hirael out to the modern estates of Penrhosgarnedd. We trace hidden water leaks for all of them — owners, landlords, letting agents and housing providers — without ripping anything open on a hunch.
We will be straight with you about logistics: Gwynedd is a long way from Neath, so rather than promising same-day attendance we group Bangor jobs onto planned routes and can normally confirm a survey date within a few working days. The fee never moves whatever the drive involves — £480 + VAT covers the full survey, and a leak that takes all afternoon to corner costs the same as one found in the first hour.
Every visit ends with a written report built for insurers: thermal imagery, moisture readings and photographs of the confirmed leak position. For landlords with student lets, that same document doubles as evidence for deposit disputes and maintenance records.
Local knowledge
The slate-and-stone terraces of Upper Bangor, Garth and Hirael went up in the city's port and quarry heyday, and their thick rubble-filled walls behave like sponges — escaping water soaks in at one point and reappears a room or two away, sending owners chasing damp patches nowhere near the actual fault. Many of these houses now hold four or five student bathrooms where the original builders plumbed for one, with joints buried behind studwork nobody has seen since the conversion.
Down the age range, the Maesgeirchen estate and the newer closes around Penrhosgarnedd sit on solid concrete floors with heating pipes cast into the screed, where a pinhole can run silently for a whole winter. And because this corner of Eryri catches some of the heaviest rainfall in Wales, genuine plumbing leaks are routinely written off as penetrating damp — our moisture profiling settles that argument with data rather than opinion.
WHAT WE FIND IN BANGOR
Coverage
We take in the whole of the city, from the cathedral quarter and the High Street up to the university ridge, along with the villages of its LL57 hinterland — Llandygai, Tregarth and Bethesda towards the Ogwen valley — and the Strait-side settlements out to Y Felinheli.
Postcode areas covered: LL56 · LL57
Our methods
Slate and stone are unforgiving materials to guess behind, which is why our Bangor surveys let the instruments do the arguing. Tracer gas introduced into an isolated pipe run rises through masonry and solid floors to mark the exact escape point; acoustic sensors pick up the signature of pressurised water through thick walls; and thermal imaging maps heating circuits without lifting a board. Where a terrace has suspended timber floors, a borescope through a hole smaller than a coin lets us inspect the void, while moisture meters chart how far the water has already travelled.
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.
Bangor FAQs
Answers specific to Bangor properties and how we work in the area.
Because we travel up from Neath, Bangor surveys run on planned routes rather than same-day call-outs — most can be scheduled within a few working days. Ring 01639 999 999 and we will give you a date, plus advice on isolating the supply to limit damage in the meantime.
Yes, and it is one of the most common jobs we see in university towns. One visit locates the fault, and the report — photographs, thermal images and moisture data — gives you a dated record for your files, your insurer and, if needed, a deposit dispute.
By profiling the moisture rather than eyeballing the stain. Rain penetration and plumbing leaks leave different patterns, and if the readings point to pipework we confirm it with tracer gas or acoustic detection before anyone is asked to open anything up.
That is exactly what the report is written for. You receive documented evidence of the leak's location — imagery, readings and photographs — which insurers ask for when assessing trace and access, a cover included in most buildings policies. The survey costs a fixed £480 + VAT.
We do. Every LL57 address and the LL56 area around Y Felinheli is covered at the same fixed price as Bangor itself.
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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