Unfortunately the first sign of a leaking shower comes long after the start of the leak.
Every time you take a shower small amounts of water penetrate through grout, or areas where there is missing silicone and via cracked/broken tiles.
Correctly installed waterproofing should contain water and water should then fall towards the drain. Unfortunately waterproofing a tiled shower is still(even after the leaky home saga) can be completed by a low skilled person.
Tiled showers are excellent when installed correctly but when they’re installed poorly, it is almost always a full rip out.
For advice before your tiled shower installation or to discuss rectifying your leaking shower hit the button below