Hi everyone,

Great resources here – thanks!

I’m looking for advice on reframing the walls in a small basement bathroom following work from a waterproofing company that installed an interior French drain system with half-wall vapor barrier (see pics).  I would like to use the approaches described on this site (2 in of rigid foam followed by furring strips or a stud  wall) but there is insufficient space because of the location of various fixtures (I’d have to relocate the toilet flange using a jackhammer and even then the space would become very tight).

Q: What is the best approach here?

Option 1: Remove the half-wall vapor barrier and simply seal and paint the wall.
Option 2: Use a thin piece of rigid foam (say 1/2 inch), followed by furring strips and moisture-resistant gypsum board.  The shower portion of the bathroom would have cement board over the furring strips assuming this would be structurally-sound enough for such a plan (compressibility of the rigid foam ok behind a future tile wall?).
Option 3: Use no insulation and leave half-wall vapor barrier as-is and just apply pressure-treated furring strips to wall followed by moisture-resistant gypsum board.

Background info: the rest of the basement is not heated or insulated so it is effectively a three-season space.  The property is located in Baltimore, MD.  I would reroute the copper plumbing on the walls if I built-out that wall.

Thanks!  Options I haven’t considered are of course welcome!