I have a shower floor with pebble stones with the grout coming off and the rocks themselves chipping off. It's about 7 years old and I have remove/re-grouted the area before but with the rocks chipping off it's time to think of another solution. The pebbles are on a Wedi boards and I don't want to ripe out everything just to remove these pebbles stones. See attached pictures, it'll a pain and costly to rip out.
Any ideas to either seal it better or replace these pebbles tiles?