Central Heating Leak Detection

The experts we send to investigate hidden, or hard-to-find leaks in a central heating system are all Gas Safe registered. This means that as soon as a leak is found the repair work can begin straight away. They’re qualified to work on any part of a central heating system; boilers, radiators, heating pipes and underfloor water-fed systems.

Our tradespeople can be scheduled quickly for any type of water leak, or ingress, investigation throughout London and the Home Counties. We have experts on call 7 days a week.

In addition to leak investigation, we provide a full repair and refurbishment service. Once a leak has been pinpointed and exposed, the damage can be assessed and the repair process can begin immediately. We’ll provide all the information needed for an insurance claim too.

A pool of water beneath a radiator, or a boiler that’s losing pressure, are usually the first signs of a central heating system leak.

A water fed central heating system is sealed. It should maintain pressure if there are no issues. However, pressure within the system will increase and decrease slightly as it heats up and cools down again. If the pressure drops regularly and needs to be topped up with water, this is a clear sign of a problem.

If a boiler is losing pressure, a leak in the central heating system shouldn’t be assumed automatically. A Gas Safe registered engineer can first check for faults, such as a damaged expansion vessel, or pressure release valve. Both of these issues can result in the loss of pressure.

Simple checks for leaks in exposed parts of a central heating system are the first part of the investigation process. Tiny amounts of water may be escaping from pinhole leaks in radiator panels, corroded pipes or damaged valves and seals.

The “trace and access” investigation can begin as soon as the boiler and exposed parts of the central heating system have been checked.

The majority of tests we carry out are completely non-invasive. The location of a leak can usually be pinpointed to within a few centimetres without needing to expose central heating pipes.

Commonly, there are no visible signs of water damage when we investigate central heating leaks. This means two specific tests are vital to an investigation.
 

Thermal Imaging

Cameras are used to highlight where hot water pipes are located behind/under floors and walls. Temperature gradients between hot water pipes and the space around them are clearly visible.

Sometimes, if a leak is large enough, the hot water pooling beneath a leak will be revealed on the camera. Cool areas detected on the camera can also be an indication of a water leak.
 

Tracer Gas

The central heating system will need to be drained and filled with a harmless, odourless gas. A sensitive probe is used to detect the gas as it escapes from a leak in the system.The gas is lighter than air and is able to penetrate most floor coverings, including wood, tiles, laminate and carpet. It can even penetrate concrete floors. The detector alerts to where the gas is escaping.

Other tests can be used to provide evidence of where a leak is located. These include moisture content surveys and water analysis (testing for salts).

Exposing the leak to provide visual confirmation of where it’s located is a standard process. This also allows our expert to assess the extent of problem and see related water damage. Work to stop the leak and prevent further damage can almost always start immediately.

A detailed report of the investigation will be shared within 24 hours of attending. This can be submitted as part of an insurance claim.

A scope of work and fixed price quote can be produced for full reinstatement. We’ll return the damaged area to its original condition.

We’re always happy to help answer any questions your insurance provider might have. This could relate to any part of the investigation, repair or refurbishment work.