If you are installing a pool in your backyard, there are many types to choose from. A popular choice is a gunite swimming pool because it is highly durable and it can be created in just about any shape. Gunite pools use a rebar framework that is sprayed over with a concrete and sand mixture. The method is preferable over a traditional poured concrete pool that requires a wooden framework to hold the shape of the basin. Gunite is exceedingly durable, so swimming pools made of this substance are built to last. The versatility of gunite swimming pools means more than the ability to create an unlimited array of shapes.
Fiberglass pools come in most any size and shape imaginable. They are molded pools that are installed in your yard in one piece. Pools can be heated to extend the swimming season and can be installed with fiber optic lights for night swimming. Fiberglass is a strong, lightweight material that is constructed by weaving small glass threads into fabric and hardening the fabric with a special polyester resin. A smooth finish is made by adding weather-resistant gel.
A vinyl liner pool has a custom made sheet of vinyl between the water and the pool structure. Vinyl liners typically lock their top edge, called a bead, into a track located on the bottom of the coping, which is at deck level. Underneath the liner is a sand or cement-like floor, specified in dimension to the "cut" of the liner that is to be used. The floors come up to meet the walls, which are commonly 3 ft by 8 ft panels made of galvanized steel or thermoplastic. These walls are supported from behind so that they won't bow out against the weight of the water. All of the wall panels are secured together to make up the perimeter shape of the swimming pool.