Hi! I appreciate all the forum advice I get from your organization. I am seeking to take over my Dad’s residential construction business and I am designing my own house which we will build in a few years. I am in college to do so and am learning an awful lot. For basement insulation, I narrowed down some ideas that I would like to go with. To let you know some of our practices, we dampproof our basements and run drains around the perimeter just in case. As for the insulation, upon much research, I have found that it is best to use sub-slab insulation. We live on the southern edge of Zone 5. As for the walls, I’m considering using a thin layer of EPS for moisture control on the interior (to avoid having to mess with termites), then finish the rest with Polyisocyanurate. I don’t want to finish the walls right away, but just insulate them, so I heard polyiso is acceptable in case of fire. EPS and Polyiso are much better for the environment from what I’ve read, so that’s what I want to stick with. Any thoughts? I would appreciate your advice.