I was very clear to the builder that I wanted a minimum of 8’ finished height after ceiling and subfloor.

As far as carpet goes, you make some valid arguments, and I am thinking about it. I installed r-foil under the slab, which the manufacturer claims an r10 equivalent insulation factor and should take care of any moisture problems. I also ran an extra perforated weeping tile circuit throughout the interior perimeter, in addition to the standard exterior perimeter.


Here’s the r-foil before the floor was poured.