Leak Detection Merton

Same-day appointments are usually available in Merton, and next-day almost always. If water is actively escaping, tell us when you book. Live leaks are prioritised and we can talk you through isolating the supply while an engineer travels.

Not on a leak arising within your own property that we cannot find: in Merton that detection fee is waived. Trace it instead to a neighbour's pipework, a shared riser or the water main beyond your boundary and the fee stands, because that is a located leak, and it is the finding that moves the repair bill off you.

Yes. Trace and access reports documenting the cause, precise origin and affected areas are available for every Merton detection visit, typically within 48 hours. They are structured the way UK loss adjusters expect.

All of it, including Wimbledon, Mitcham, Morden, Raynes Park, Colliers Wood. We cover every London borough, so coverage never depends on which side of a postcode line you live.

The setup can be repeated, the conclusion cannot be assumed. Knowing the house type shortens the pipe location stage because the likely route is already a strong hypothesis, and it means correlation can be configured correctly at the first attempt rather than the third. But the route is still confirmed electromagnetically on each property, the pipe material at each sensor position is still verified against an accessible length rather than assumed from the specification, and the span between sensors is still measured rather than paced. Where a house has been re plumbed, and after ninety years many have, the original specification is actively misleading. The report records what was verified so that the next visit starts from fact.

It should reach a positive conclusion about the cause, not merely record moisture. Damp and mould is assessed as a hazard under the housing health and safety rating system and the expectation is that the cause was identified and addressed. So the report should state whether the supply and heating were isolated and tested and what they read, whether a sample of the affected fabric was tested to separate an escape of water from condensation or ground moisture, and what the surface and ambient readings were, including relative humidity and surface temperature, since condensation is diagnosed from the relationship between those rather than from a damp meter alone.

Up to a point, and the transferable findings are worth recording deliberately. Where several properties share a house type, a generation of pipework and a similar history of repair, the mode of failure on one is a reasonable indicator for the others: microbore coils failing at compression tails, galvanised sections failing where they meet copper through dissimilar metal corrosion, or a particular joint type used throughout by whoever did the estate wide upgrade. What a report can do is name the mode rather than only the location, note the material and the joint type found, and record the condition of the adjacent lengths that were exposed during the repair. That turns a reactive visit into information you can use at the next void, which is when acting on it is cheap.

It affects it significantly and it is a common source of misreading. External wall insulation with a render finish puts an insulating layer between the camera and the structure, so heat differentials from inside the wall are damped and a wet area behind it may produce no external signature at all. Render also has a different emissivity from the brickwork it covers, and if the camera is left on a default setting the calculated temperatures will be wrong across the whole image rather than just in one spot. Cracked or debonded render adds a further complication, because the air gap behind a debonded area reads as a thermal anomaly that looks convincingly like moisture. Where a property is rendered, the thermal survey is weighted towards internal work and the external pass is treated as indicative only.