Pam's Basement Kerdi Shower

[pmcall]

Thank you, CX, for merging the threads, and for your answer. I'll be sure to keep my posts consolidated -- there will be more, I'm just getting started on this little project. My goal is not to let the thread get very old, because that will mean the project is dragging on ...

I'll look into this drywall. It's only a few bucks a sheet extra. I was actually thinking of it as much for the walls of the basement in general as for the shower itself. I'll investigate further.

Thanks again.

Pam

[cx]

The cost isn't my real concern, Pam, the compatibility of the surface with thinset is. I ain't got no eye-dee what they pewt on there.

Have you applied anything to the basement walls, either inside or out, to keep them dry?

[pmcall]

Thanks, yes, I'll confirm compatibility or else use regular drywall in the shower.

I have yet to put anything on the walls to keep them dry. Still investigating the right way to do this. Outside is under dirt, and I'm not digging, so anything I do will be inside. It's a walk-out basement (the bathroom is against the side with a full-height concrete wall), well-drained on a slope, and there's no visible moisture -- and I know there can be invisible moisture coming through the concrete.

I'd sure welcome recommendations about how to proceed with the walls. So far I have: some kind of waterproof coating on the concrete wall, stud wall spaced away from the concrete, insulation (rigid foam?) between the studs, vapor barrier (not in the shower), drywall. I hope this is not too off-topic for this forum. I've noticed this is a wide-ranging group.

Pam

[pmcall]

After a break to handle other things, I'm finally proceeding with my basement shower project.

Two of the walls are poured concrete.

Researching insulation options, I came across foam insulation that you fasten to the wall with furring strips. Owens Corning Insulpink, for example. The bathroom is very small and I like the idea of saving the inches that would be taken up by the airspace plus stud wall described in previous posts.

Would this material, covered with drywall, provide a suitable foundation for a Kerdi shower?

Would Wedi board (if I can obtain it) thinset to the concrete be better? Other options? Or is a stud wall really the best way to go?

Thanks. I've already read the PDF file John has so generously provided -- it's great. And I'm sure I'll have more questions very soon!

Pam