Homeowners will want to choose the material that works for their needs. Concrete pools last the longest, but they need refinishing, and mold and algae can grow if the pool is not maintained correctly. Fiberglass pools are easy to maintain, but the prefabricated shells restrict the size and depth of the pool. Vinyl-lined pools are easy to clean, and they come in various shapes and sizes, but the lining will eventually need to be replaced. It’s a good idea to choose the material that works best for the area where the pool will be installed.