Internal Cold Mains Leak Detection in Wakefield

Symptoms

The occupant of a property in WF3 noticed water dripping from the ceiling near the entrance of the property. Visible water damage had developed in that area, and the customer directed the engineer to the affected zone on arrival.

Notably, the boiler was showing no loss of pressure, which helped narrow the source away from the heating circuit and pointed toward a cold water supply issue.

With water actively dripping from the ceiling and no obvious external cause, internal leak detection was required to trace the origin of the moisture through what was evidently a concealed section of pipework above the entrance area.

Methods Used

The investigation began with a thermal imaging survey of the water-damaged area to identify cold anomalies within the structure. Moisture readings were then taken across the ceiling and walls at the entrance, returning high levels of moisture in both surfaces.

A pressure test was carried out on the internal pipework, which failed, prompting a tracer gas test across the internal system. Tracer gas was detected in the bathroom directly above the area of water damage, concentrating the search in that zone.

An endoscope camera was then used to inspect the ceiling cavity from below. Water escape was identified and recorded on video at a push fit tap connector in that void.

This sequence — standard practice in internal leak detection — allowed the leak to be confirmed visually before any access was made, ensuring that both ceiling and subfloor openings were targeted precisely.

Investigation Process

1. 1
   Initial Assessment

   On arrival, the customer showed the engineer the water-damaged area and the water dripping from the ceiling near the entrance. The customer confirmed there had been no pressure loss on the boiler.

2. 2
   Thermal Imaging Survey

   A thermal CCTV survey was carried out across the area of water damage. Cold anomalies were identified within the structure.

3. 3
   Moisture Readings

   Damp meter readings were taken across the ceiling and walls at the entrance. High levels of moisture were recorded in both surfaces.

4. 4
   Internal Pressure Test

   A pressure test was conducted on the internal pipework. The test failed, confirming a breach on the internal system.

5. 5
   Tracer Gas Test

   Following the failed pressure test, tracer gas was introduced to the internal pipework. Gas was detected in the bathroom directly above the area of water damage.

6. 6
   Endoscope Camera Inspection

   The endoscope camera was used to inspect the ceiling cavity. Water escape was found and recorded on video at a push fit tap connector.

7. 7
   Access and Repair

   Access was made to the ceiling at the entrance and to the subfloor in the bathroom above. A new 3/4 to 22mm push fit tap connector, 50cm in length, was installed to complete the repair.

Result & Outcome

The leak was traced to a push fit tap connector located in the ceiling void beneath the bathroom floor, directly above the entrance area where water damage had been presenting. The connector was recorded on video via the endoscope camera before any physical access was taken, confirming the precise location and avoiding unnecessary disruption elsewhere in the property.

Access was made to the ceiling at the entrance and to the subfloor in the bathroom above. The faulty connector was replaced with a new 3/4 to 22mm push fit tap connector, 50cm in length, completing the repair at source.

As an outcome of this internal leak detection job, the engineer noted that wood rot had been identified as part of the water damage present. A full investigation and remediation of all affected materials is recommended to prevent structural deterioration — the repair to the pipework alone does not address the damage already sustained by the surrounding structure.