Non-destructive leak detection in Guildford using acoustic, thermal imaging and tracer gas equipment — locate hidden leaks under floors, behind walls and in screeds without ripping the property apart.
Non-destructive leak detection in Guildford using acoustic, thermal imaging and tracer gas equipment — locate hidden leaks under floors, behind walls and in screeds without ripping the property apart.
Related: Mains water leak repair & water main replacement · Stopcock & valve repair
Non destructive leak detection means we find the leak before anyone lifts a floor. Acoustic, thermal and tracer-gas equipment narrows the loss to a small area, so the repair opening is measured in centimetres rather than metres across Guildford properties.
A calibrated thermal imaging camera reads the temperature difference a leak creates in screed, plaster and timber. Thermal imaging leak detection is the fastest route to hot-feed and heating leaks, and produces images we include in the written report.
Acoustic leak detection uses ground microphones and a correlator to hear pressurised water escaping. It works through concrete, tile and buried ducting, and pinpoints mains and cold-feed losses that leave no visible trace.
Unexplained high water bills, damp patches, sinkholes in a driveway or a meter that turns with every tap closed all point to a supply-side loss.
Buried supply pipes are traced and surveyed with tracer gas and correlation, so the excavation is limited to the failure point. Hidden leaks inside walls, ceiling voids and under floors are located the same way.
We test the incoming main, isolate at the stopcock to separate internal from external losses, and where the main has failed we can replace it — see our water main replacement and lead pipe repair service.
A heating system that keeps losing pressure is leaking somewhere, even when nothing shows on the surface.
Pressure-drop testing, thermal survey and where required a leak-sealing assessment identify weeping joints, corroded rads and buried pipe failures on central heating circuits in Guildford.
Underfloor heating leak detection combines thermal imaging over the screed with manifold circuit isolation, so we can name the failed loop and repair or bypass it without lifting the whole floor.
Hidden Leak Detection is the kind of work where the difference between a good plumber and a poor one shows up months, not minutes, after the invoice. A push-fit fitting bodged behind plasterboard, a soil-pipe joint that isn't properly solvent-welded, a compression olive over-tightened onto old lead-lined copper — none of these fail immediately, but every one of them turns into an insurance claim within a year. When you book hidden leak detection with us anywhere in Guildford, the engineer who attends is directly employed, DBS-checked, fully insured to £5 million public liability and — where the job touches gas — Gas Safe registered.
That employed-only model is why we can offer a written workmanship guarantee on every water leak detection job and honour it without argument. It also means the person who diagnoses your fault is the person who fixes it, so there is no "the surveyor said one thing, the engineer said another" moment on the day. Across Guildford and the surrounding postcodes we run stocked long-wheelbase vans carrying compression fittings, push-fit spares, WRAS-approved brassware, common boiler PCBs, drain rods, high-pressure jetting kit and colour CCTV — enough to first-time-fix the majority of hidden leak detection calls without a second visit.
We do not charge a separate call-out fee if work proceeds. You get a fixed price agreed before we start, an itemised invoice on completion, photographs of any concealed work and a copy of any pressure-test, tightness-test or CCTV video for your records. Landlords, managing agents and letting agents in Guildford routinely use these packs directly with their insurers, buildings insurers and — where relevant — the housing tribunal.
The first call is answered by a UK-based coordinator, not an overseas call centre. They will confirm your postcode in Guildford, ask a short set of triage questions (is water actively flowing? is the stopcock accessible? is there gas involved?) and either dispatch an engineer immediately for an emergency or book you in at a specific hour rather than a four-hour "window". You will receive an SMS with the engineer's name and live ETA.
On arrival the engineer isolates the affected supply, protects flooring and furniture, and diagnoses the fault. For water leak detection that usually means one of a small number of failure modes, and we will explain what has failed, why, and what the two or three sensible repair options are — rather than defaulting to the most expensive. Everything gets a fixed written price before a spanner is turned. If a part needs to come from a merchant, most Central London and Home Counties merchants are within a 30-minute round trip; for less common parts we quote a return visit rather than sit on the clock.
On completion we pressure-test the affected section (or drop-test the drain, or tightness-test the gas), take before-and-after photographs, clean down the work area and issue a written invoice with the workmanship guarantee period clearly stated. You do not pay a penny until you have signed off the job on site.
Every hidden leak detection job we complete in Guildford and the surrounding postcodes carries a written workmanship guarantee. Replacement parts carry the manufacturer's warranty, which for boiler components is typically 12 to 24 months and for brassware, valves and pumps 12 months as a minimum. Where the work involves Gas Safe notifiable installations we submit the Building Regulations notification to Gas Safe Register on your behalf and the certificate arrives at the property by post within ten working days.
Our public liability cover is £5 million and our employer's liability is £10 million — the certificates are on the van and we are happy to share them with any managing agent or insurer who asks. For commercial clients we can also provide method statements, RAMS, permit-to-work compliance and out-of-hours access arrangements as standard, at no extra cost, when the works are booked in advance.
We operate 24/7, 365 days a year across Guildford. Overnight, weekend and bank holiday call-outs use the same employed engineers as our weekday service — you are never handed over to a subcontractor at midnight — and the out-of-hours labour rate is quoted before we set off, never applied retrospectively.
Call or book online for hidden leak detection in Guildford. We'll confirm scope and a fixed price.
A fully insured local plumber attends at the agreed time with a stocked van — most jobs are fixed on the first visit.
Work is completed to WRAS / Water Regs / manufacturer spec and you get a written invoice, photos and our workmanship guarantee on the day.
Pricing depends on the scope of work, parts required and time on site. Our engineer will quote a fixed price before any work starts at your Guildford property — no surprises on the invoice.
Yes. Every engineer is fully insured (£5m public liability), DBS-checked and — for any boiler or gas work — Gas Safe registered. We send the right qualified person for hidden leak detection in Guildford.
For genuine emergencies we aim to be on site in Guildford within the hour, 24/7. For pre-booked work, same-day or next-day slots are usually available across Guildford and the surrounding areas.
Yes — all plumbing repairs come with a workmanship guarantee, and replacement parts carry the manufacturer's warranty. For boiler repairs the parts & labour guarantee is 12 months.
Yes. We work in homes, flats, HMOs, restaurants, offices, shops and managed buildings across Guildford and the surrounding areas — including landlords, letting agents and facilities companies.
Our engineers can handle any of the works below in the same visit across Guildford.
Round-the-clock emergency plumbing in Guildford — burst pipes, sudden leaks, no hot water and overflowing toilets. Engineer dispatched within the hour, 365 days a year.
Fast burst pipe repairs in Guildford — we isolate the water supply, locate the failure and complete a permanent repair the same visit. Copper, plastic and lead pipework.
Blocked drains cleared fast in Guildford — high-pressure jetting, rodding and electro-mechanical clearing for foul drains, gullies, rainwater stacks and external runs.
Same-day unblocking of toilets, soil pipes and macerators in Guildford. Whether it's a single WC backing up or a whole stack venting back into the property, we'll clear it fast.
Professional drain jetting in Guildford for stubborn blockages, fat build-up, root ingress and routine drain maintenance — domestic, commercial and contractor work.
CCTV drain surveys in Guildford — pre-purchase home buyer reports, recurring blockage investigations and pre-build condition surveys with full written report.
Yes — while our engineer is at your Guildford property for hidden leak detection, they can usually carry out leak detection, drain clearing, tap or toilet repairs and boiler checks in the same visit, saving you a second call-out fee.
Yes. Every service listed below is delivered by our own employed engineers throughout Guildford and the surrounding postcodes — no subcontractors, no agency cover.
Yes. Tell us what you need when you book and we'll send a single fixed written quote covering hidden leak detection plus any additional plumbing or drainage works at your Guildford property.
Gas Safe engineers on call 24/7 across Greater London and the M25. Pick your area for local response times, arrival windows and same-day availability.
London (all boroughs) · same-day cover · fixed hourly rates
Central London · same-day cover · fixed hourly rates
East London · same-day cover · fixed hourly rates
West London · same-day cover · fixed hourly rates
North London · same-day cover · fixed hourly rates
South London · same-day cover · fixed hourly rates
Our Guildford engineers also cover these neighbouring areas on the same shift pattern.
87 London boroughs, towns and M25 areas covered 24/7. Jump straight to local response times and availability for hidden leak detection in your area.
All the services below can be carried out on the same visit as your hidden leak detection in Guildford.
Round-the-clock call-outs for burst pipes, leaks and lost water.
LEAKThermal imaging & acoustic location of buried leaks.
DRAINHigh-pressure jetting and rodding for foul and surface drains.
BOILGas Safe repairs for all major boiler brands, same day.
CCTVColour CCTV surveys with insurer-ready written report.
TAPMixer cartridges, washers and thermostatic valve repairs.
On the same visit in Guildford we can also handle leak detection, blocked drains, boiler repairs, CCTV drain surveys, tap and shower fixes — anything in the emergency plumbing and drainage scope.
Yes. Landlords and managing agents in Guildford get a dedicated coordinator, consolidated monthly invoicing, photo-documented job reports and a 24/7 emergency line for tenants.
Yes. For leak detection, drain surveys and flood-related work we provide a written report with photos and (where applicable) CCTV video — accepted directly by household and commercial insurers.
Our local emergency plumbers are on call 24/7 across London. Fully insured, Gas Safe registered where required, with fast response times day and night.
24/7 emergency response • All London postcodes