Hi all. My 8-9 years old house already have leak at the toilet. It's affecting the opposite side of the wall.

The contractor gave us 2 suggestion.

1. Just do external piping. Easy. - wife don't want

2. Hack the tiles to try to find the leak. Problem is i contacted the tiles supplier they don't produce those tiles anymore. So it will be weird if I use a different tiles on some spot.

You guys face this situation before? 

Are there any smarter way to do it? Or maybe different tiles design solution?

Thanks.

Likely on the wall. Damn sien. Stupid contractor never change all the old pipe for me last time when I did the MAJOR renovation.

So now scratching my head how to do it creatively.