Originally Posted by nrpalm
I get that part, I guess what I was asking is if you would seal the foam to the concrete with liquid nails/caulking or leave it just set against the wall with the studs holding it up.
If installing the wall and framing directly against the concrete:
I suggest that you use PT lumber. Attach the rigid foam with liquid nail (construction adhesive) to the concrete.
Install no vapor barrier.
Install paperless Drywall.
If framing the walls with a space between the concrete foundation walls, then you can install the rigid foam to the concrete, the same way, using const. adh.
For the walls, you can use PT sill plates and KD studs.
I still suggest that you use paperless drywall on at least the lower 4' of the walls (In case of a plumbing leak, Hot water tank failure, etc...).