by www.tileexperience.co.uk »
Sat Aug 22, 2009 5:40 pm
wow, interesting thread. sorry to hear about your mishap, especially as a morning shower is one of the few times men get to themselves in peace and quiet.
my guess is that redoing the tiles that are blown is only the start of the problem.
could it be that there is leaking pipework behind the tiles in question? this would cause them to blow. are the tiles alone blowing, or coming off with the plaster and adhesive?
it really should be a case of taking them off, letting the substrate dry out thoroughly, and ideally tank it out before tiling, and then it would be with a powdered adhesive as mentioned above.
the cause undoubtedly is water, but until you take the tiles off you won't know if it is adhesive failure, plaster/substrate failure etc