Finding Hidden Water Leaks in Derby Without Ripping Up Floors

Checks you can do yourself before calling anyone

A few simple checks will tell you whether you have a leak and roughly which system it is in. That also helps whoever you call to bring the right equipment.

If your meter shows water being used when everything is off, the leak is on the mains side. If the boiler keeps losing pressure but the meter is still, the leak is almost certainly in the heating system, often in pipework buried under a floor.

• Turn off every tap and appliance, note the reading on your water meter, then check it again after 30 to 60 minutes without using any water.
• Watch your combi boiler gauge. Having to top it back up to about 1 to 1.5 bar more than once every few weeks usually points to a heating leak.
• Walk around barefoot. A warm strip across a solid floor often follows a leaking heating pipe.
• Look for damp patches, lifting laminate, swollen skirting boards or a musty smell that does not go away with ventilation.

Why leaks in Derby homes are so hard to find

Derby has a real mix of housing, and each type hides leaks in its own way. In the Victorian terraces around Normanton, Pear Tree and Rose Hill, old lead or galvanised supply pipes can run under suspended timber floors or under the back yard, so the water can travel a long way before it shows. On the 1960s and 70s estates in places like Chaddesden, Allestree and Mickleover, heating is often run in thin microbore copper set into a concrete screed. A pinhole leak there can go unnoticed for months.

Newer builds around Oakwood and the city's edges usually have plastic pipework that is more forgiving but harder to trace with some methods. Derby's fairly hard water also leaves scale inside older copper, which can speed up corrosion at joints and bends.

The equipment specialists actually use

No single tool finds every leak, so a good survey combines several methods and cross-checks the results before anyone marks the floor.

On a typical house this takes between two and four hours. At the end you should get a marked-up location and a written report.

• Thermal imaging cameras show the temperature pattern of hot water pipes through floors and walls, which is ideal for heating leaks under screed.
• Acoustic listening equipment picks up the sound of pressurised water escaping, even through concrete or tarmac.
• Tracer gas, a harmless mix of hydrogen and nitrogen, is put into a drained pipe. It rises through the ground or floor and is picked up with a sensitive detector. It works well on long supply pipes and on plastic pipe.
• Moisture meters and hygrometers map how far the damp has spread, so the source can be told apart from where the water has ended up.
• Pressure testing isolates individual circuits to show which section is losing water.

What it costs and who pays

The price depends on the size of the property, how many systems need testing and how easy it is to get at them. As a rough guide, a standard non-invasive survey on a Derby house often costs a few hundred pounds. Large properties, commercial sites or long external supply runs can cost more.

Before you book, check your home insurance for 'trace and access' cover. Many policies pay for finding the leak and for making good afterwards, even if they do not cover the repair itself. Your insurer may want a written report showing where the leak is and what caused it.

Who is responsible for the pipe matters too. As a rule, Severn Trent is responsible for the pipe up to your property boundary, and you are responsible for the supply pipe from there into the house. If the survey shows the leak is on their side, report it to them.