Thermal LeakDetect™

Problem Area:

Our client observed brownish water stains and mould growth on the reinforced concrete (R.C.) ceiling of their bedroom toilet. This area is directly below the kitchen toilet of the neighbouring unit. The client engaged our Thermal LeakDetect™ detection service to identify the main concentrations of dampness across the ceiling to pinpoint potential sources of water seepage.

Methodology and findings:

The Thermal LeakDetect™ detection service was conducted on the ceiling surfaces before and after a 24-hour water ponding test in the upper neighbouring unit’s kitchen toilet. Following the test, an increased concentration of dampness was detected around the discharge pipe area. Further physical inspection of the upper neighbouring unit revealed gaps around the internal discharge pipe and floor joints, as well as weak tile grout lines, all of which are potential sources of water ingress. We concluded that the waterproofing system in the upper neighbouring unit’s kitchen toilet has failed.

Recommended next-steps:

Carry out PU injection grouting on the reinforced concrete ceiling slab and leaking pipe joints in our client’s bedroom toilet to seal gaps and prevent water ingress. Additionally, the loose tile grouts and existing gaps around the internal discharge pipe and floor joints in the upper neighbouring unit’s kitchen toilet should be repaired to minimize water ingress. Further monitoring of the kitchen toilet during normal use is advised.