Of course, the sight of that mini rainstorm in my bathroom left me sleepless for the rest of the night.
The contractor came a few days later but could not find the cause of the problem as the pipe area was totally dry. He hypothesised 2 possibilities:
1. Condensation from aircon
2. Leaky pipes
He advised me to wait and observe. The next time the incident happens (he assured me that it would happen again), I should poke my head into the pipe area and take some photos if I can.
Last night, again, I was awakened by the sound of water dripping! I was in a quandary as to whether to get out of bed to investigate, or pretend that the noise was non-existent. Finally, the sleuth in me dragged my sorry arse out of bed and into the bathroom and there it was again - a mini storm in my bathroom! I didn't have a ladder so, armed with my trusty G9, I climbed onto the toilet bowl and tip-toed on the narrow cistern to try to catch a glimpse of what was happening inside. On hindsight, that was such a dangerous stunt - wet feet on tip-toes, one hand holding onto some support and the other maneuvering the camera in that hole trying to snap a clear picture of the leaky pipes.
At that point, I still had no idea what was causing the leak. First thought was the rain, as it was raining rather heavily outside last night.
XXX
I got home today and stopped to chat with the guard on duty. The moment I started complaining about my pipes, he told me that the tenant who moved in above me had also been complaining about hers. I asked the guard what she could have been doing at 4am in the morning last night, to which he replied that she is a trader who comes home at 3+am everyday, so naturally, she takes her bath at about 4am when the rest of the sane world is sound asleep.
Lesson learnt? Why bother speculating or conjuring up reasons when you have a guard downstairs who knows everything? Name a unit and he knows exactly who resides in it, his/her nationality, origin, occupation, marital status, gender, car being driven or none, etc etc. Time to "bribe" him into spilling dirt about my neighbours! LOL