Please people, I have a pretty bad leak in my shower, I think it's coming from the bottom row of tiles that need regrouting, I will be having a go at this, but a couple of them, have a small movement on them when I press them, which I'm assuming is where the water has got behind them and they have come away from the wall, it's only a tiny movement, do you think I can get away with just a re grouting without taking any tiles off the wall.
