Can tiles be replaced without replastering the pool? Should they? We have a 5 year old pool - the tiles on the spa dam wall have been falling off from almost day one (I will restrain myself from ranting about the builder). I've been replacing them as the fall off but it seems to be getting worse and I'm tired of this piecemeal fix. We are also getting rust which the builder is coming out to inspect. Since they are likely going to have to drain down the water level to repair it I'd like to get the tiles replaced at the same time if I can without replastering the whole pool.