Hi all
I think a few of the tiles around our bath/shower have had the
plaster underneath 'blown'. The tiles look slightly discoloured, and
sound a little hollow when tapped, compared to other tiles elsewhere.
They are the bottom row of tiles (ie. the ones just above the bath)
and are the ones where the flow from the shower will hit most.

I am guessing that some water from the shower has got behind these
tiles (either at the grouting, or at the tile/bath seal) and caused
the plaster behind to expand.

Would it be possible/easy just to remove just the tiles in this row or
part row, clean up the grouting on the adjacent tiles, clean up the
plasterboard, and refit with new tiles? I have spare tiles, luckily.
I'm unsure whether removing the grouting from the edges of the
adjacent remaining towels will be a hassle, and if so the best way to
do this.

Any other suggestions and pointers gratefully received. Oh, fairly
obviously I am reconciled to replacing the bath/tile seal as well.

Thanks
J^n