Despite all my efforts I'm getting water seeping down behind my bath
taps and damaging the kitchen ceiling below. There's only about 1 cm
to work in between the taps and the tiles, so getting that sticky
white caulking stuff in place is difficult. Twice now, I thought I'd
successfully done it, only to get leaking again after a couple of
weeks of showers.

Close examination shows what seem to be tiny gaps, between the
caulking and the horizontal surface of the bath. As if it's not
sticking, but 'lifting' off. A few similar gaps where the caulking
meets the vertical tiles.

I'm not going to attempt caulking again. Can anyone recommend some
other product I can use please? I'm wondering whether simple 'plaster
filler' or whatever it's called would work? Or some sort of glue?

Any suggestions would be much appreciated please.

--
Terry, East Grinstead, UK