Hi all. I'm doing a makeover on my pool and hope the experts here can lend an opinion. Among other things, I'm doing new deck pavers, coping, tile, pool resurfacing, etc. Today the protruding edge of the 4' concrete slab that served as the pool deck was cut back flush with the edge of the pool, allowing us to use regular coping instead of remodel coping. Some type of bonding material was then applied over the old tiles, which I assume will be smoothed down once it properly hardens to prepare a mounting surface for the new tile. I have absolutely no construction background, but it seems to me the old tiles should have been removed before this was done. So experts, what say ye: Yea or Nay? thanks.