Waterline Tile Replacement

[duraleigh]

Dave,

You're idea to saw cut around the entire pool is gonna' be your best option. Neither grout nor plaster will "feather edge" very well.

Color mismatch you'll have to live with. Try a small area 'til you get a mix you can tolerate. I would suggest you fill it with grout so you can grout the tile and fill the void with one step.

All masonry products will absorb water but whether you use grout or plaster won't make too much difference.

[huskyrider]

My suggestion is to hit the home run and replaster the pool now.
Your aged pool finish will really drag down the look of your new tile, coping , and decks.
If you opt not to I suggest just working the problem areas where the plaster broke off beneath the waterline tile.

See ya,
Kelly