What the method does
Correlation uses leak-related sound detected at different points to help estimate a possible source along a pipe. It depends on useful signals and a reasonable understanding of the route, length and materials between the points.
Network information matters
A result can be affected by branches, changing pipe materials or an inaccurate route. The engineer assesses whether the network is suitable and compares the estimate with other findings. It is one potential way to reduce the search area before excavation, rather than a universal answer for every buried supply.
Where it may be useful
- Suitable private mains networks
- Longer supply runs with useful access points
- Supporting an underground leak investigation
What it cannot establish on its own
Weak sound, unknown pipe details and complex branches can make results less useful. Another method may be more appropriate.
Before the visit
Provide any pipe plans, known replacement sections and accessible valve locations. Information about extensions to the supply can change how a signal is interpreted.
An investigation, not an equipment checklist
The most useful method is the one that answers the next question about your plumbing. A visit may combine observations and tests, or find that another specialist is needed. We explain the findings and proposed access before the agreed repair. Our package is defined by its scope, not by using every instrument.
Read how the investigation works and the £1,345 residential package, including exclusions.