NJ Concrete pools are just one option. Vinyl and fiberglass pools are also available. Vinyl pools are built by attaching the vinyl liner to a reinforced frame made of steel, aluminum, or non-corrosive polymer. They can be easily constructed, usually within one to three weeks, but are easily damaged by pets, sharp object, and even pool toys.
Fiberglass pools are tougher. Built by simply inserting a factory-molded fiberglass shell into a hole, installation can easily be done within a day. However, because of its pre-molded nature, it only comes in a few shapes and sizes. It also has a higher price tag than the other options.