Gunite is complete and we have a transparent/iridescent MasterTile going on infinity edge, spa overflow, and water line. The tile looks splotchy (has dark areas) for some reason. The builder says it is moisture behind the tile that hasn't dried. The problem is it rained today and it got worse so doesn't that mean when there is water in the pool it's always going to look bad? Surely if moisture can get behind there that can't be good? It is over the entire perimeter of the pool.
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