Material
Concrete and gunite (a type of reinforced concrete) are the strongest, most stable pool construction materials. They range in price depending on geographic location, type of landscaping, and design complexity.

Construction
Concrete and gunite are sprayed over a framework of steel rods and wire mesh then coated with plaster to give the pool a smooth, paintable surface.

Material
Vinyl lined pools are generally less expensive than gunite and offer a smooth, non-porous surface that does not stain easily. They are popular in colder regions of the country because they can be quickly drained and covered in the winter.

Construction
Polymer or steel walls are bolted and fastened together on concrete flooring. The vinyl liner is spread over the floor and paneled walls and connected to the top of the walls by a vinyl rib at the outside edge of the liner. Construction time is usually one to three weeks. Generally, vinyl liners must be replaced - their lifespan depends on pool usage and geographic location.

Material
Fiberglass pools are preformed and, like vinyl pools, have a non-porous surface which does not stain easily. Fiberglass requires fewer chemicals than concrete pools and does not have a liner.

Construction
Fiberglass pools are manufactured in a factory to your specifications. Once your yard has been excavated, the pool is delivered in one piece and installed. Construction time is generally 3 days to about two weeks.