FIBERGLASS: The entire pool is a one-piece fiberglass shell. An advantage is that fiberglass pools are typically installed in less time than any other type of pool. A disadvantage is that while all other types of swimming pools offer unlimited sizes and shapes, the fiberglass pool is installed "as-is," with fewer choices for size, shape, and depth.

If there is any blistering, delamination, or cracking of the fiberglass, call your local pool professionals that specialize in fiberglass repairs.