The tile around the coping (I think that's the right term) needs to be re-grouted. Haven't noticed any loose tile; all seem to be firmly in place, but the grout shows a great deal of wear. The pool is 25 years old and while it has recently been resurfaced (diamond brite), the coping is original & seems to have held up pretty well. I just want to head off any potential issues at the pass, but haven't the slightest notion about type & kind of grout, or method. Anyone knowledgeable about how to manage this sort of thing? Thanks very much.