I'm a longtime lurker but this is my first post on TFP so go easy on me .
I'm planning to put in a DIY vinyl liner inground pool next spring. I'm still in the planning stages and am very concerned about heating costs(I'm in NH). I was wondering if anyone has insulated the outside walls of their pool with spray closed cell polyurethane insulation. If you install a pool with polymer walls would this have an adverse effect on them? Would the insulation hold-up to the elements and during the backfill?
I understand that most of the heat loss comes from evaporation. I'm just wondering whether it would be worth the effort to try and insulate the walls. I do plan on applying 1/8" foam to the inside of the walls.
Thanks in advance for all the responses,