Leak Detection in Sudbury: Hidden Leaks Traced and Fixed
Need leak detection in Sudbury? A damp patch that keeps spreading, a boiler that keeps losing pressure or a water bill that suddenly jumps usually means a hidden leak. Anglian PHE finds and fixes leaks in homes across Sudbury, Great Cornard, Ballingdon and Chilton, working from our base on Market Hill in Clare, about 7 miles away and usually 15 to 20 minutes by road.
No call-out fee – Gas Safe registered 572792 – NAPIT electricians – OFTEC trained for oil – trading since 1993 – a team of over 10 local engineers – Rated Excellent on Google, 60+ reviews.
Call 01787 278511 Call 07825 348536 WhatsApp 07825 348536
Water leaking right now? Do this first
- Turn off the water at your internal stopcock. In older Sudbury terraces it is often under the kitchen sink or under the floorboards just inside the front door; in newer homes it is usually under the kitchen sink or in a utility cupboard.
- If water is near light fittings, sockets or the consumer unit, keep away from that area and switch off the electrics at the main switch if it is safe to reach.
- If the leak is on the heating, turn the boiler off. Open the cold taps to empty the pipes.
- Move belongings away, put towels or a bowl under the drip, and take a few photos for your insurer.
- Call us on 01787 278511, day or night, or call or WhatsApp 07825 348536 (WhatsApp) with a photo of what you can see.
While you wait for us: useful checks
Once the water is off and the area is safe, a few simple checks help us find the leak faster when we arrive. None of them need tools.
- Do a quick meter test. With every tap, the washing machine and the dishwasher off, write down the reading on your water meter, wait 30 minutes without using any water, then read it again. If the numbers have moved, water is escaping on the mains side. Tell us the result when you call.
- Notice when it gets worse. A damp patch that only grows when the heating is on points to a heating pipe. One that appears after a shower or bath points to the shower tray, bath or the pipes feeding them. A patch that grows all the time points to the mains supply.
- Leak near the hot water cylinder? Switch off the immersion heater and the boiler, and leave the airing cupboard door open so we can see the valves and pipework.
- Ceiling sagging with water? Keep everyone out from under it, do not switch on the lights in that room, and put a bucket below the lowest point.
- Clear the way. Make sure we can get to the stopcock, the boiler, the airing cupboard and the cupboards under the kitchen sink. If you have photos of the leak when it was at its worst, keep them to show us.
Leak detection in Sudbury: how we find the leak
We do not start by pulling up floors. We work through the simple checks first and narrow the leak down so the disruption is kept to the smallest area we can:
- Meter test. With every tap and appliance off, we watch the water meter. If it keeps turning, water is escaping on the mains side.
- Heating pressure test. If the boiler keeps dropping below 1 bar, we isolate the heating circuit in sections to find which run of pipe is losing water.
- Acoustic tracing. A pressurised leak makes a noise that can be followed along a pipe run, through floors and walls.
- Thermal checks. Where hot pipes run in a floor or wall, a temperature difference can show where the water is coming out.
- Targeted opening up. Only once we know where the leak is do we lift the boards or open the wall, and only there.
Once we have found it, we explain what we found, agree the repair with you and fix it, then retest. If you need a report for an insurance claim, tell us when you book. Many home insurance policies include “trace and access” cover, so it is worth checking yours.
Typical leaks we find in Sudbury homes
Sudbury has a real mix of housing, and the type of house says a lot about where a leak is likely to be:
- Victorian and Edwardian terraces near the town centre and in Ballingdon often have suspended timber ground floors. A pipe can drip into the void for weeks before anyone notices, and some still have old lead or iron supply pipes.
- 1960s to 1980s estates in Great Cornard and on the edges of town often have copper heating pipes laid in the concrete floor. A pinhole leak there shows up as a boiler that needs topping up every few days, or a warm patch on the floor.
- Newer homes around Chilton and on the newer estates use plastic push-fit pipework and sometimes underfloor heating. Leaks tend to be at fittings behind kitchen units, under baths and around shower trays.
- Listed and timber-framed houses in the older streets need extra care, so we keep any opening up to an absolute minimum.
Sudbury also has hard water. Limescale does not usually cause a hidden leak by itself, but it does wear tap washers, toilet fill valves and cylinder valves, which is why we often find a running overflow or a constantly refilling cistern behind a high water bill.
Leak signs in Sudbury homes and what we check first
The first sign of a hidden leak is rarely the water itself. This is how the common symptoms usually line up with the cause, and where we start looking:
| What you notice | Most likely cause | What we check first |
|---|---|---|
| Boiler pressure drops every few days | A heating pipe in a solid floor, a weeping radiator valve or the pressure relief valve | The relief pipe outside, every radiator valve, then each heating circuit in turn |
| Water meter moves with everything off | The mains supply pipe, a toilet fill valve or an outside tap | A meter test at the stopcock, then each section of pipe |
| Stain on the ceiling below a bathroom | A shower tray seal, a bath or basin waste joint, or a pipe under the floor | Each tap, shower and bath run on its own, then the joints from below |
| Warm or damp patch on a ground floor | A heating or hot water pipe in the concrete floor | Pressure tests on that pipe run, then thermal checks along it |
| Musty smell or soft boards in an older terrace | A slow drip into the space under a suspended timber floor | Acoustic checks along the pipe run, then lifting one board at the suspect point |
| Water bill jumps, nothing visible | A toilet cistern quietly running into the pan, or a leak on the outside supply pipe | The cisterns and overflows first, then the supply pipe from the boundary |
Boiler losing pressure? It may be a hidden heating leak
If your combi or system boiler keeps dropping below 1 bar, water is leaving the heating system somewhere. Before booking, have a quick look at your radiator valves for drips or green or white crusting, and check the small copper pipe that runs from the boiler to the outside wall: if it is dripping, the pressure relief valve is letting by, which is a boiler repair rather than a hidden leak. If neither shows anything, the leak is probably under a floor or in a wall. Because our engineers are Gas Safe registered (572792), we can check the boiler and the pipework on the same visit. See also our boiler repair in Sudbury page.
Call 01787 278511 Call 07825 348536 WhatsApp 07825 348536
Who is responsible for the leaking pipe?
Inside your home, and on the private supply pipe from the boundary stop tap to the house, repairs are usually the homeowner’s responsibility. A leak on the public side of the boundary is normally the water company’s. Anglian PHE is an independent plumbing and heating firm, not the water company, but we can help you work out which side of the boundary a leak is on before you spend money on it.
Underground leak detection in Sudbury: leaks on the supply pipe outside
Not every leak is inside the house. The private supply pipe runs underground from the water company’s stop tap at your boundary to the stopcock indoors, and a leak there may never show as a damp patch. Common signs are a patch of lawn or driveway that stays wet in dry weather, a water meter that keeps moving even with the indoor stopcock turned off, falling water pressure, or a water bill that jumps for no obvious reason.
For underground leak detection we start with the meter. With the indoor stopcock closed, a moving meter tells us the water is escaping between the boundary and the house. We then check the outside stop tap and boundary box, trace the route of the pipe and listen along it to narrow the leak down, so that only a small area of garden, path or drive has to be dug. Our water meter leak test guide explains the first check you can do yourself.
Around Sudbury the pipe itself is often the clue. Older town houses can still have lead or galvanised iron supply pipes, which corrode and split with age, while farmhouses and cottages in the villages can have long supply runs across gardens and fields. Newer homes usually have blue plastic pipe, where leaks tend to be at joints or where the pipe has been disturbed by building work. Depending on what we find, we either repair the damaged section or recommend replacing the run, and our pipe repair page explains the options. Once a supply pipe leak is fixed, it is worth asking your water company whether it offers any allowance on the water you lost.
Why Sudbury homeowners choose Anglian PHE
We are a local firm with a team of over 10 local engineers, so you deal with people who know the area rather than a national call centre. We have been trading since 1993, we are Gas Safe registered (572792) for gas and LPG work, our engineers are OFTEC trained for oil heating and our electricians are NAPIT registered. There is no call-out fee, and we always explain the work and agree it with you before we start. We are Rated Excellent on Google, with 60+ reviews.
Areas we cover around Sudbury
We cover all of Sudbury and the surrounding villages, including Ballingdon, Chilton, Great Cornard, Little Cornard, Long Melford, Acton, Great Waldingfield, Bures, Glemsford and Lavenham. For burst pipes and other urgent jobs see emergency plumbing in Sudbury, and for everything else we do locally see our page for a plumber in Sudbury, Suffolk or plumbing and heating around Sudbury. Our main leak detection service page covers the rest of Suffolk and Essex, and our areas we cover page lists every town and village we serve.
Other services in Sudbury: boiler repair, boiler servicing, bathroom installation.
Leak detection in Sudbury: common questions
How do I know if I have a hidden leak?
The usual signs are a boiler that keeps losing pressure, a water meter that moves when nothing is running, a damp patch or stain that keeps growing, a musty smell, warm patches on a solid floor, or a water bill that jumps for no obvious reason.
My boiler keeps losing pressure. Is that a leak?
Often, yes. If you have to top the boiler back up to about 1 bar every few days, water is escaping from the heating system somewhere. It can be a weeping radiator valve, the pressure relief valve letting water out through the small copper pipe outside, or a pipe hidden in a floor. Our Gas Safe engineers check the boiler side and the pipework, so you are not passed between trades.
Will you need to take up floors?
Only where it is needed. We narrow the leak down first with meter and pressure tests, isolating sections and acoustic and thermal checks where they help, so any opening up is kept to the smallest area we can.
Do you repair the leak once you have found it?
Yes. In most cases we find the leak and repair it on the same job, then retest the pipework and the boiler pressure before we leave. If the floor or wall needs making good afterwards, we explain what is involved.
Is the leak my responsibility or the water company’s?
Inside your home and on the private supply pipe from your boundary stop tap to the house, it is usually the homeowner’s responsibility. A leak on the public side of the boundary is normally the water company’s. We are an independent firm, not the water company, but we can help you work out which side of the boundary the leak is on.
Can you come out at night or at the weekend?
Yes. For water escaping now, call 01787 278511 any time, day or night. We attend as soon as possible, even at midnight.
Is there a call-out fee?
No. There is no call-out fee. We explain what we have found and agree the work and cost with you before we start.
Can I check for a leak myself before you come?
Yes. Turn off every tap and water-using appliance, note the reading on your water meter, wait 30 minutes without using any water and read it again. If it has moved, water is escaping somewhere on the mains side. If the problem is a boiler that keeps losing pressure, write down how often you have to top it up. Both results help us narrow the leak down quickly.
Will my home insurance pay for leak detection?
Many home insurance policies include “trace and access” cover, which pays towards finding a hidden leak and opening up to reach it. Policies differ, so check yours or ask your insurer before we start. If you need a written note of what we found for a claim, tell us when you book.
Can you find an underground water leak in my garden or driveway?
Yes. With the indoor stopcock closed we use the water meter to confirm the leak is on the underground supply pipe, then trace and listen along the route of the pipe to narrow it down before any digging, so only a small area needs opening up.
How do you investigate a water leak when there is no damp patch?
We start with the evidence you have: the water meter, the boiler pressure gauge and your water bills. A meter test shows whether water is escaping on the mains side, isolating sections of the heating shows whether it is the heating system, and acoustic and thermal checks then help us find the exact spot.
Book leak detection in Sudbury
Call us on 01787 278511, or call or WhatsApp 07825 348536 (WhatsApp) with a short description and, if you can, a photo. You can also email info@anglianphe.co.uk.
Call 01787 278511 Call 07825 348536 WhatsApp 07825 348536
Anglian PHE Ltd – Top Floor, 4 Market Hill, Clare, Sudbury CO10 8NN. Call 01787 278511 (24/7 emergencies) or call / WhatsApp 07825 348536. Email info@anglianphe.co.uk. Gas Safe registered 572792, OFTEC trained for oil, NAPIT electrics, trading since 1993, no call-out fee.