Posted By pcastleberg on 11 Mar 2013 10:32 PM Alton I was kind of wondering the same thing about the chemicals. We would more than likely use a salt based system which essentially makes its own chlorine but if not we would probably use chlorine. If we do this we would have a pool cover (automated) that would keep the pool covered at all times it was not in use to keep evaporation to a minimum and lower pool heating costs. We would also have a very good ventilation system in place to control the humidity of the air. I would be curious if the rusting was more due to the humidity levels (and having condensation on the surfaces) or just to the chemical properties in the air? Chris it sounds like you may have used Metal SIPs to enclose some pools? If so are there types of metal SIPs that are more suited for an application like this? Would aluminum skins be less likely to rust? Or are there G90 coated SIPs? If so are they significantly more in cost? You build in FL right? I would assume you have built close to the ocean? Metal SIPs close to the ocean need special SIPs? Thanks!
Posted By Alton on 11 Mar 2013 10:16 PM Most pools that I am familiar with either use harsh chemicals or salt. Both types will wreak havoc with metal unless the metal has at least a G90 coating of zinc on it. Even then, I do not know what the life span of the zinc coated metal skins would be.Most indoor heated pools that I have used had concrete walls which did well. After a few years, the metal skin doors started rusting from the bottom up.Since you will need good insulation in a wall not subject to rusting, consider using shotcrete panels with at least 1.5" of concrete on both sides with 4" or more of expanded polystyrene insulation inside.
