I am interested in some low cost alternatives to a sum room enclosure for my pool in the back yard. The pool is just outside the basement back door. I think a three sided enclosure would do fine like an addition to the house. I was thinking that a prefab garage type enclosure would be a low cost alternative. At present the pool and pool deck is usable only one third of the year. I like to swim. It cost too much to clean and heat and uncovered pool.