Freeform or rectangles are the most common fiberglass pools. Fiberglass is more limited on size than other pool options, as they come pre-made and ready to install. The maximum size is 15′ wide by 40′ long.
Because gunite pools use a rebar framework that is sprayed over with a cement and sand mixture, you can have whatever size or shape you want. You can also choose your pool finishes from top to bottom with different color coordination, textured looks or tile application.