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Engineer tracing a water leak on domestic pipework

Water leak detection in Mansfield & Nottinghamshire

Finding the leak before anyone lifts a floor — and repairing it once we have.

A leak you cannot see is the expensive kind. Pressure that keeps dropping, a warm patch on a floor, a stain spreading across a ceiling, a cupboard that smells damp — by the time the evidence is obvious, the water has usually been running for weeks. The instinct is to start lifting floorboards where the damp shows, but water travels along joists and pipe runs, so the wet patch is very often nowhere near the leak. We trace it first and open up second. Everything here is work inside the property: heating and hot and cold pipework under floors and in walls, and the taps, valves, cylinders and radiators on the end of it.

  • Hidden leaks traced without lifting floors on a guess
  • Heating systems that keep losing pressure, diagnosed properly
  • Leaking taps, valves, radiators and cylinders repaired
  • Reports written for insurance trace and access claims

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Accredited & approved

Checkatrade approved memberGas Safe RegisterWorcester Bosch accredited installerBaxi approved installer

Trading since 1989 · Gas Safe registered · £5 million public liability insurance · Rated 10/10 from 50+ reviews on Checkatrade

Customer reviews

Checkatrade approved member
  • Customer rating 10/10

    RPH Home Services did a great job. I can’t fault Dean and his team. We had a new boiler fitted. Highly recommended. Fitted the boiler on a Saturday as they were busy the following week.
    Boiler installation
  • Customer rating 10/10

    If you are looking for anybody to carry out boiler installation, servicing or central heating work then look no further. RPH were competitive, punctual, professional, clean and tidy. Nothing was rushed and they went to great effort to not only complete our swap from a traditional to a combi boiler, but to do it in a way that made the swap look as good as possible too. Although we got several quotes, they left us feeling confident we made the right decision.
    Combi conversion
  • Customer rating 10/10

    I was very impressed with David from the day he came to give me a quote. He checked the location of gas pipes to ascertain the complexity of the job — two previous companies had not even mentioned this. On fitting day David and two colleagues arrived at the time advised. They kept me informed of each task and left my property clean and tidy.
    Boiler installation
  • Customer rating 10/10

    Needed my old boiler and F&E system replacing. David visited and we agreed a new location for the boiler and an extra radiator. On the day of installation David, Dean and crew were very professional, ensuring all carpets and flooring were protected. Very pleased with the work undertaken.
    System replacement

Our work

Work we have completed

Our own photographs from recent jobs across Nottinghamshire.

  • Worcester Bosch combi boiler installed in a fitted kitchen

    Worcester combi, kitchen install

  • Newly commissioned Worcester Bosch combi boiler with its documentation attached

    Commissioned and documented

  • Worcester Bosch boiler with neatly run copper pipework below

    Copper pipework, first fix

Signs you have a hidden leak

  • Pressure that keeps dropping

    A sealed heating system that needs topping up more than once or twice a year is losing water somewhere. If the pressure relief discharge outside is dry, the water is going into the building rather than out of it — usually from pipework under a floor or inside a wall.

  • A stain spreading on a ceiling

    Almost always pipework or a fitting in the floor void above, and almost never directly above the stain. Water runs along a joist until it finds somewhere to drop, so the mark on the plaster tells you where it left, not where it started.

  • Warm or damp patches on the floor

    A leak on a heating pipe buried in a solid floor warms the surface above it. A cold damp patch is more likely a cold feed or a waste. Either way the position of the patch is a clue, not an answer.

  • A tap or valve that never quite stops

    A weeping tap, a radiator valve that marks the floor, or an overflow that drips is small until it is not. These are the cheapest leaks to fix and the ones most often left for a year because they seem trivial.

How do you find a hidden water leak?

The point of leak detection equipment is to avoid destroying the building to find a pinhole. Which method fits depends on what is leaking and what it is buried in, and usually it is more than one — the camera narrows it to a room, the acoustics narrow it to a metre.

  • Thermal imaging — shows a heated pipe run and the anomaly on it, through tile, screed or timber
  • Acoustic listening — picks up the sound of escaping water on pressurised pipework
  • Pressure testing — isolates the system circuit by circuit to prove which one is losing water
  • Tracer gas — introduced into a drained pipe and detected where it surfaces, for the leaks nothing else finds
Pipework being traced beneath a floor

Can you find leaks under floors and inside walls?

This is the bulk of what we are called to. Under suspended timber floors, pipework runs between and along the joists, and a weep can track several metres before it shows anywhere — which is why lifting boards under the damp patch so often finds dry pipe. Under solid floors the pipework is cast into the screed, so there is nothing to lift and nothing to see: the only signals are falling system pressure and a faint warm line across the floor. Both are traceable without opening the room up first.

  • Heating circuits buried in solid floors located by thermal imaging
  • Pipe runs under suspended timber floors traced before boards come up
  • Leaks inside stud and solid walls mapped by their moisture pattern
  • Failed joints and pinholes on hot and cold pipework repaired
  • Floors and coverings reinstated after the repair
Heating pipework and isolation valves inside a property

What about leaks from taps, valves, cylinders and radiators?

Not every leak is hidden. A tap that weeps whatever you do to it, a radiator valve leaving a mark on the floor, a cylinder that has started to seep, a toilet that runs constantly — these are ordinary jobs and they are worth doing before they become the other kind. A dripping cylinder or a failed valve on an upstairs radiator will find its way through a ceiling eventually, and at that point the plaster costs more than the part did.

  • Taps, mixers and stop valves reseated or replaced
  • Radiator valves, unions and towel rail connections
  • Hot water cylinders, including unvented systems and their safety devices
  • Toilets, overflows and float valves
  • Isolation valves fitted so the next repair does not mean draining the house

What leaks do you not cover?

We work inside the property. The underground supply pipe running from the boundary stop tap in the street to your internal stop tap is not something we take on, and neither is water mains work, lead supply replacement or any job that needs the ground opened up. If your water company has flagged a leak on your external supply, or you have water surfacing in a garden or driveway, that is a job for a mains and excavation specialist rather than for us. We would rather tell you that at the enquiry than send an engineer to say it at the door.

What should I do if I smell gas?

Gas is different, and the order of operations matters. If you can smell gas, do not wait for us and do not start looking for the source yourself. Turn the supply off at the meter, open the windows, leave the electrics alone and call the National Gas Emergency Service on <strong>0800 111 999</strong> — they attend free, at any hour, and will make the property safe. Once it is made safe, a Gas Safe registered engineer has to trace and repair the fault before the supply can be restored, and that is the part we do.

Will my home insurance cover trace and access?

Most home insurance policies include trace and access cover — the cost of finding the leak and of the damage caused getting to it, separately from repairing the pipe itself. Insurers generally want evidence of what was found and how, which is exactly why non-invasive tracing matters: a documented, targeted investigation is a far easier claim than a lifted floor and a guess. We provide a written report with our findings for you to submit.

Losing water and cannot find where?

We will trace it properly before anything gets lifted, and give you a fixed price for the repair once we know what we are dealing with.

Frequently asked questions

Can you find a leak without lifting my floor?

That is the entire point of it. Thermal imaging, acoustic listening and pressure testing are all non-invasive — they narrow the search to a small area before anything is opened up. We cannot always avoid lifting something to make the repair, but we can usually avoid lifting the wrong thing, which is where the real cost and mess comes from.

Do you find leaks on the water pipe outside, in the garden or drive?

No. We work inside the property — pipework under floors and in walls, heating systems, taps, valves, cylinders and radiators. The buried supply pipe running in from the boundary stop tap, water mains and anything needing excavation are outside what we take on, and you want a mains specialist for those. Tell us what you are seeing when you call and we will say honestly which of the two it sounds like.

My boiler pressure keeps dropping — is that a leak?

Usually, but not always. It can also be a failed expansion vessel or a passing pressure relief valve, and those are cheaper fixes. The quick check is whether the discharge pipe outside is wet. We test the system before assuming, because replacing pipework that was never leaking helps nobody.

There is a stain on my ceiling. Where is the leak?

Rarely directly above the stain. Water leaves a fitting, runs along the nearest joist and drops wherever it can, so the mark on the plaster is the exit point rather than the source. We trace back along the run instead of opening up at the stain, which is what stops you paying for two holes.

Will my insurance cover the cost?

Many policies include trace and access cover for finding the leak and making good the damage caused reaching it, though the repair to the pipe itself is often excluded. Check your policy wording or ask your insurer before work starts. We provide a written report of what we found and how, which is what claims tend to hinge on.

What do I do if I can smell gas?

Call the National Gas Emergency Service on 0800 111 999 straight away — free, 24 hours. Turn the gas off at the meter if you can reach it safely, open windows and doors, and do not touch light switches or anything else electrical. Do not call us first. Once the property has been made safe, we can trace and repair the fault so the supply can be restored.

Do you cover the villages around Mansfield?

Yes — Rainworth, Ravenshead, Farnsfield, Clipstone, Mansfield Woodhouse, Sutton-in-Ashfield and the surrounding area, from our base at Ransom Wood. There is no travel charge within our normal working area.

How much does leak detection cost?

A fixed fee for the trace, confirmed on the phone before we set off, and a separate fixed price for the repair once we know what it is — you are never committed to the second before you have seen the first. If the trace is for an insurance claim we write the report as part of the job.

How quickly can you get out to a leak?

Same day across Mansfield and Ashfield where the diary allows, and prioritised anywhere if water is coming through a ceiling. Worksop, Retford, Tuxford and the Nottingham suburbs are usually within a day or two.

Are you insured and Gas Safe registered?

Yes. Every engineer is Gas Safe registered, we are Worcester Bosch accredited and Baxi approved, and the business carries £5 million public liability insurance. We have traded from Mansfield since 1989 and are rated 10/10 from more than 50 verified reviews on Checkatrade.

Page reviewed and updated by RPH Home Services, Mansfield.

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  • Emergency Callout

    Same-day response for no heat, no hot water and active leaks, with vulnerable customers prioritised.

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