Water Leak

We have a persistent leak from an upstairs tenant bathroom into the ceiling below. We have tried regrouting and sealing ourselves but it continues to have a small drip. I am a bit at a loss since everytime I think I have it solved it comes back again. I am having Junior and Aida in to fix plaster problems but want to have this cleared up beforehand. Should I be calling a plumber or a tiler to someone to put in one of those bath/shower liners? It’s a tenant apt and we aren’t going for big style – just no leaks!

Thanks!

By anne_nyc |