East Anglian Leak Detection
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East Anglian Leak Detection
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Hertfordshire homes, flats and businesses

Leak detection in Hertfordshire

Most leaks show up as a stain, a falling boiler gauge or a meter that never stops. Across Hertfordshire, our engineer Charlie traces the cause from the surface, and a second test confirms it before anything is opened.

Bathroom fittings tested one by one

Heating circuits isolated before scanning

Every mark photographed for your report

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Lines open 8am to 8pm, every day.

Hertfordshire has two kinds of town side by side. Letchworth and Welwyn Garden City were planned as garden cities, and Stevenage, Hatfield and Hemel Hempstead grew as new towns after the war. Hertford, Ware, Hitchin and Berkhamsted kept their old centres. Which kind you live in changes where a leak hides.

In the new towns, many post-war homes have heating pipes set in concrete ground floors, and flats and maisonettes sit one above another. A boiler that keeps needing water, or a stain on a neighbour's ceiling, is often the first clue. In the old towns, refits rerouted pipes under timber floors and through thick walls.

In the interwar suburbs around Watford, Rickmansworth and Potters Bar, the bathroom often sits over the kitchen, so leaks show on the kitchen ceiling. In the northern and eastern villages, the pipe from the meter to the front door can be long. Our engineer Charlie has worked across the area for over 15 years.

White rendered Arts and Crafts cottages behind hedges and wide grass verges, typical of a Hertfordshire garden city Timber-framed and brick cottages beside a village pond with a willow tree, typical of a Hertfordshire village

Typical jobs across Hertfordshire

Kitchen ceiling stain under a pumped shower

The property

A 1970s semi in Hemel Hempstead with a hot water cylinder and loft tank. A pump in the airing cupboard boosts the shower, which sits over the kitchen.

The problem

Each shower left a fresh brown ring on the kitchen ceiling, which faded between uses. The tray had been resealed twice without any change.

How we found it

Readings below peaked between the shower and the airing cupboard. A gentle shower with the pump off left them steady; with the pump on they climbed, and the thermal camera picked out warm water spreading from a joint under the floor.

The outcome

That joint, on the pipe from the pump, only leaked under the pump's extra pressure. Lifting one floorboard at the mark let us remake it, priced separately.

Drips in a garage under a coach house flat

The property

A coach house flat over a row of garages on a newer St Albans estate, let by its owner. Its supply pipe rises inside boxing in a neighbour's garage.

The problem

Drips landed on the neighbour's car below, and the water company had written about high use. The tenant upstairs had noticed nothing wrong.

How we found it

Readings peaked where the supply rises through the garage. Closing the flat's stop tap did not stop the meter, which put the leak below it. The thermal camera showed a cold streak down the boxing; tracer gas escaped near its top.

The outcome

The landlord paid at the end of the visit and passed our report to the neighbour. Only the boxing came off for the repair, which was quoted separately.

A leak hidden by the hosing at boarding kennels

The property

Boarding kennels down a lane in east Hertfordshire. A buried plastic branch runs from the house meter, under the concrete yard, to the kennel block.

The problem

The water bill kept climbing, but in a yard hosed every day a wet patch meant nothing. With every tap off at night, the meter still turned.

How we found it

Shutting the kennel block valve stilled the meter, putting the leak on the branch. Barking made listening hard, so tracer gas went in and rose through a joint in the concrete. A quiet spell with the ground microphone agreed.

The outcome

As a business, the owner paid before the booking was confirmed. One square of concrete between the runs was broken out at the mark, and we quoted the branch repair separately.

People we help across Hertfordshire

Living under a bathroom or a neighbour

A brown mark creeps across the ceiling under a bathroom, or water comes through from upstairs. We map the damp, then run the bath, shower, toilet and taps separately, leaving the tiles alone.

Boiler passed, but the gauge keeps falling

The boiler has passed its check, yet you keep refilling it. Tell us how often, whether the pipes run in concrete or under boards, and whether leak sealer was added, as it can stop tests working.

Owners with a letter about high use

Your water company reports constant flow through the meter, but the house is dry. Before we come, find your inside stop tap: if closing it stops the meter, the leak is indoors.

Water company letters, and whose pipe it is

Affinity Water supplies most of Hertfordshire, but check the company on your bill. A letter about high use usually means water is passing the meter all day and night. The company's pipe ends at your boundary or meter; the length under your garden or drive is normally yours. In new town blocks, one supply can serve several flats, so tell us if yours is shared.

How we close in on a leak

1

Start with the numbers

First come readings: the meter with everything off, the speed the boiler gauge falls, and moisture levels around any stain. Together they tell us which system is losing water.

2

Rule out what is sound

Then we test that system piece by piece: each bathroom fitting, the upstairs and downstairs heating, or the supply either side of the stop tap. Whatever holds pressure is ruled out.

3

A spot both tests agree on

Thermal imaging or moisture readings find the area. A second, different test has to agree on the exact point before anything is marked. We photograph the mark for your report.

Signs of hidden water leaks in Hertfordshire homes

A stain that grows when nobody washes

A mark that spreads while the bathroom sits unused points to a pipe under pressure. One that darkens only after use suggests a waste, seal or shower tray.

The boiler gauge sinking between top-ups

Pressure that slips away over days, with nothing wet in sight, usually means a heating pipe leaking into a floor or wall. Tell us how fast it drops.

Damp at the foot of an old wall

In older town houses, a pipe buried in a wall or floor can keep plaster damp. A moisture meter shows whether the damp spreads from one spot.

A higher meter reading by morning

Note the meter at bedtime and again before anyone runs a tap. If nobody used water overnight, a higher number means a leak.

The tests behind each marked spot

Moisture meters

A moisture meter moved across a stained ceiling finds where the damp is heaviest, which usually sits below the fitting or pipe we test first upstairs.

Thermal imaging

Warm pipes show through plaster, tile and concrete when the system is hot. Water escaping from one carries heat sideways, so the leak appears as a spreading patch.

Pressure testing

We close off one part, such as the upstairs radiators or one bathroom feed, and watch a gauge. If the needle holds, that part is not the one leaking.

Towns across Hertfordshire

We cover the garden cities and new towns, market towns such as Hertford, Ware, Hitchin and Berkhamsted, the Lea Valley down to Waltham Cross, and the south around Watford, St Albans and Potters Bar.

Leak detection in Abbots Langley Leak detection in Baldock Leak detection in Berkhamsted Leak detection in Bishop's Stortford Leak detection in Borehamwood Leak detection in Bovingdon Leak detection in Broxbourne Leak detection in Buntingford Leak detection in Bushey Leak detection in Carpenders Park Leak detection in Cheshunt Leak detection in Chorleywood Leak detection in Croxley Green Leak detection in Harpenden Leak detection in Hatfield Leak detection in Hemel Hempstead Leak detection in Hertford Leak detection in Hitchin Leak detection in Hoddesdon Leak detection in Letchworth Garden City Leak detection in London Colney Leak detection in Oaklands Leak detection in Potters Bar Leak detection in Radlett Leak detection in Redbourn Leak detection in Rickmansworth Leak detection in Royston Leak detection in Sawbridgeworth Leak detection in South Oxhey Leak detection in St Albans Leak detection in Stevenage Leak detection in Tring Leak detection in Waltham Cross Leak detection in Ware Leak detection in Watford Leak detection in Welwyn Leak detection in Welwyn Garden City
1930s mock Tudor semi-detached houses with hedged front gardens on a frosty morning, typical of a Hertfordshire commuter town

Before a trace and access claim

Ask your insurer first: some want to approve the work beforehand, and any claim is their decision. Our written report gives the location, methods, readings and photographs, and it follows once payment for the visit is complete. Open up at the marked spot first, as a leak is only certain once the pipe is exposed.

Leaks we trace

Water leak detection Leaking water main Central heating leak detection Leaking underfloor heating Shower leak detection Underground water leak detection Gas pipe leak detection Thermal imaging leak detection Acoustic water leak detection Tracer gas leak detection Commercial leak detection Trace and access leak detection Leak detection for landlords Water leak repair

Useful guides

Central heating leak sealer: what it can and cannot do How to choose a leak detection company: questions worth asking Microbore pipe leaks: finding a leak in thin heating pipes No find, no fee on home water leaks: what our terms cover and what they do not

Common questions in Hertfordshire

We do. The pipe is isolated and filled with a hydrogen and nitrogen mix. The gas seeps out at the fault, and we pick it up with a detector above the pipe. It suits plastic supply pipes and leaks too quiet to hear.

Either household can book; tell us who is paying. Readings in your home come first, then we need access upstairs, because a leak is traced where it starts, and each fitting there is tested in turn. Mention any pipework the two homes share.

Each leaves its own clue. If the boiler gauge falls while the meter stays still, suspect the heating; if the meter creeps with every tap closed, suspect the supply or the hot water. Closing off each system in turn confirms which before tracing starts.

Usually, once the supply pipe leak is found and confirmed. You get a separate repair quote, which holds for work done during the visit. Our repairs are guaranteed for 3 months on the pipe and fittings we fit; testing weak old pipe can expose further leaks, priced separately.

Only if it meets the conditions. No find, no fee on home water leaks covers one leak on a water main up to 30 m or the hot and cold supply pipes, at least half a litre a minute, where we also carry out the access and repair. It does not cover central heating, shared mains, businesses or leaks that come and go. Full conditions are on our terms page.

Stain, gauge or letter in Hertfordshire?

Call 07700 102 008 and tell us which one you have noticed. Lines are open 8am to 8pm, every day, and visits are usually booked within 24 to 48 hours.

Call 07700 102 008 Get a quote
East Anglian Leak Detection