I've been reading lots of conflicting information. I am starting a bathroom remodel that will include a tiled shower along an exterior wall.
It's become clear that I need to use cement board in the shower, but I am unclear about waterproofing it. I was planning on putting a vapor barrier over the new insulation before putting up the cement board, but I've read that if you do that, you should NOT put a waterproofing membrane over the cement board. If that's the case, do you treat the cement boar at all or just tile directly onto it?
I live in Interior Alaska, so insulation and efficiency are very important. The shower will be along one exterior wall which also has a window. The window is being replace with a vinyl window and I will tile the frame as well.