How To Detect A Water Leak Under Concrete

Exposed water leak - Covered By Buildings Insurance If a pipe leaks in your home, the signs are pretty clear: you will see puddles of water, notice a drop in pressure, or hear a mysterious dripping even when the taps appear to be off. Concealed water leaks can be far more difficult to locate.

In many cases, the first time you will notice that something is wrong is when you note an increase in water bills – and depending on how long the leak has gone unchecked, this can be a very unwanted surprise.

Leaks under concrete come with their own set of issues and sources of damage, including damage to foundations, sinkholes, and the risk of subsidence. Getting to the source of them as quickly as possible should be your primary aim, and we are here to help you achieve this as quickly and effectively as possible.

What Are The Risks Of A Leak Under Concrete?

If you suspect a leak beneath your concrete, you need to act fast to ensure that this is rectified as quickly as possible. Left untreated, there are a number of risks, including

  • Raised water bills – if water is flowing freely, you are almost literally giving away money in the form of raised water bills.
  • Mold  – if water leaks are allowed to run wild and untreated, there are severe health implications, including risks of rashes, itchy eyes, fevers and serious respiratory illnesses including pneumonia and asthma
  • Structural damage – leaks can result in damage to the structure, foundation and walls of your home, including creating weak spots that can cause subsidence and the risk of collapse
  • Discount Other Sources

If you suspect a leak due to a rise in water bills, you should methodically work to discount all other sources and/or hire a professional Leak Detection Company. Check radiators, pipes, boilers, sinks, showers, baths, and toilets for signs of a leak – in some cases, these may be the culprit, and can be a fairly easy fix.

Underground leak detection is generally much more straightforward than finding a leak under concrete.

Look For Signs Of A Water Leak

If there is no sign of a leak in the obvious spots, then detecting a water can be difficult and the leak may be under concrete. There could be visual indications of this, such as pools of damp on carpets or flooring – this may be a sign that the leak beneath the concrete has spread though closer to the surface, and needs to be addressed immediately.

There may also be other signs that there is an issue buried beneath the concrete; you may notice a sinkhole or abnormally damp patch close to the wall. The grass may grow in abundance over a path or passage, or you may notice water seeping up through the concrete – the porous nature of the material means that drips can make their way through. In some cases, you may also discover a cracked concrete slab – this can be the perfect chance for water to escape.

Check Your Water Meter

Reading The Water Meter The next step is to carry out a water meter leak test – this will tell you quickly if there is an issue. Some meters may come with a specific device to help determine a leak quickly; this may be a leak indicator (usually displayed as a small triangle or sailing wheel), a sweep hand – identified as a clock-like hand that covers the meter – or an odometer – a row of numbers.

You can also check the valve itself to identify any changes. In most cases, the water meter will be located close to your home, usually on the street or kerbside, and will feature a covered lid at ground level.

Start by removing the lid and clearing away any debris or dirt, allowing you to see the water meter and valve clearly. Make a note of the position of the valve needle – you can also make a small mark to help you be super certain.

Once this is done, shut off the water to your home for a minimum of 30 minutes. After this period, head back to the water meter, and take a note of the position of the valve – if it has moved, even with the water shut off and none being used inside the house – this is a pretty good indication of a leak somewhere in your external water supply between the water meter and your internal stopcock.

Depending on your system, you may also have another means of detecting an issue – the leak detector may not stop turning, or the odometer has its numbers increase continually, even when the water is turned off. In some cases, the sweep hand may also move around dramatically over the course of a number of minutes.

Call A Leak Detection Company

Here at ADI Leak Detection we trace thousands of hidden water leaks each year, including many under concrete surfaces and even in large open spaces such as Quarries! Our acoustic listening devices are capable of hearing water escaping from a pipe up to 3 meters below the surface of concrete – pretty incredible. In conjunction with our harmless tracer gases we are able to pinpoint the location of a leak, internally or externally.

So what are you waiting for? You have a leak under concrete then call us now on 0800 731 3843 and discover how we can help you.

Adrian Morgan

Adrain Morgan CIPHE RP RHP is the founder & Managing Director of ADI Pro Leak Ltd. Adrian is also the Head Plumbing, Heating & Leak Detection engineer at ADI Leak Detection.

Adrian CIPHE RP RHP is proud to be registered with the Chartered Institute of Plumbing & Heating Engineering, a Registered Plumber and a Registered Heating Professional.