Do I need to insulate our slab?
Building a house with a full basement which will have a walk out on one end. Its being built in Johnson City, TN (east TN) — North Central Region. I have been told that because we are not in an area considered ‘cold’ or ‘extreme’ that it is not necessary to insulate the slab with rigid foam. We will be putting a poly vapor barrier under the slab but wanted your opinion on whether we need to also put down a layer of foam.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part