Case Study
Plumbing Leak Investigation in Iver Rules Out Internal Water Systems
Internal Plumbing Circuits Tested
Water ingress had been reported in the flat below, mainly during rainfall. Testing found no evidence of leakage from the investigated heating, hot-water or cold-water circuits, so a roof-space assessment was recommended as the next diagnostic step.
Google Reviews ★★★★★ 5.0 Rating 70+ Reviews Read Reviews- ✓ No Plumbing Leak Evidence
- ✓ Three Circuits Tested
- ✓ No Plumbing Repair Undertaken
- ✓ Further Assessment Advised
The Challenge
Water Ingress Needed To Be Separated From Internal Plumbing
The flat below the customer's property was experiencing water ingress, reported mainly when it rained. Pro Leak Detection was instructed to test the customer's heating, hot-water and cold-water circuits because an internal plumbing service was one possible source. The rainfall pattern was relevant context, but it did not prove where the water was entering.
- ✓ Water ingress was affecting the flat below
- ✓ The issue was reported mainly during rainfall
- ✓ Heating, hot-water and cold-water circuits required testing
- ✓ No source had been confirmed before the investigation
Investigation
Investigation Evidence
Selected photos and videos from the investigation sequence showing the evidence-led approach used on site.
Investigation
Testing Three Plumbing Circuits Without Assuming The Cause
Tracer gas, moisture mapping and endoscopic camera inspection were recorded during the investigation of the heating, hot-water and cold-water circuits. Each method contributed a different form of evidence, while the final conclusion came from the tests considered together. The submission does not attribute the negative finding to one technology or record individual readings.
Tracer Gas Testing
The internal plumbing circuits needed to be assessed as possible concealed sources of water reaching the flat below.
Tracer gas testing formed part of the investigation across the heating, hot-water and cold-water services.
No separate tracer-gas result was recorded, so the method is treated as part of the combined evidence rather than standalone proof.
MethodMoisture Mapping
Moisture checks could add context around the reported water ingress without assuming the visible or reported area identified the source.
Moisture mapping was completed, and the supplied photograph records the meter used during the visit.
No individual moisture readings were supplied, so the recorded conclusion remains based on the investigation as a whole.
MethodEndoscopic Camera Inspection
A compact camera could support visual checks around accessible plumbing and confined areas during the circuit investigation.
Endoscopic camera inspection was completed around accessible plumbing areas.
No separate endoscopic finding was recorded, so the camera is not presented as independently ruling out a leak.
Findings
No Leak Evidence Found In The Investigated Plumbing Circuits
The completed tests found no evidence of leakage from the heating, hot-water or cold-water circuits during the investigation. This was a useful diagnostic exclusion: the internal services that had been tested did not provide evidence explaining the reported water ingress. The finding applies to the tested circuits and conditions at the time, rather than guaranteeing that no leak could ever develop.
- No leak evidence was found in the heating circuit
- No leak evidence was found in the hot-water circuit
- No leak evidence was found in the cold-water circuit
- No roof defect or external water pathway was tested or confirmed
Outcome
Roof-Space Assessment Recommended As The Next Step
- ✓ No Plumbing Leak Evidence
- ✓ Three Circuits Tested
- ✓ No Plumbing Repair Undertaken
- ✓ Further Assessment Advised
The customer was advised to contact the building management company and ask for roofers to assess the roof space. This recommendation reflected the reported rainfall pattern and the absence of leak evidence in the tested plumbing circuits. It was a next diagnostic step, not a finding that the roof was responsible.
Investigation Insights
What This Investigation Shows
- ✓Testing can be valuable when it excludes suspected plumbing circuits as the evidenced source at the time of an investigation.
- ✓A pattern linked to rainfall can guide the next assessment without proving that a roof defect exists.
- ✓Negative findings should be limited to the systems and conditions actually investigated.
- ✓Clear next-step advice helps move an unresolved water-ingress investigation towards the appropriate specialist.
Local Coverage
Leak Detection In Iver
This investigation was completed in Iver, Buckinghamshire.
We regularly carry out leak detection investigations across Iver and surrounding areas.
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