I have the situation where my shower piping is leaking underneath a tiled floor. This only occurs when the shower is running, suggesting a drainage issue.
The pipe passes from the shower faucet vertically through a wooden panel, and then under the tiles.
The room is on the first floor centrally at the front of the house above the stairway, therefore the water is dripping onto the bottom step.
I do intend on getting a professional in to fix this if the job requires removing the flooring, however, I would like to asses the issue first and find the cause and location of the leak.
What could be causing this leak?
What is the best way to diagnose it?
Our house is a 6 year old brick built house.
I think it is the piping but it could be the tray (although there are no visible signs it is the tray).
How could I locate the problem without removing the flooring or ceiling underneath.
Also as a final question, how do these systems normally work, what am I likely to see if the flooring is removed, and how does the shower piping link to the house's main drainage?