About five years ago, our pool and deck were refinished. A few months later, the deck coating cracked at the joints and was repaired. Now, about five years later, the deck coating is breaking off in chunks. The pool surface has cracked in a location with a previous crack (which we paid extra to repair), and the ends of rebar are beginning to stain the pool coating. This seem like very poor performance in the materials that were used in refinishing the pool.