As usual, I agree with Jaz's comments.Angus, I have seen some guys put a waterproof membrane over the durock in a custom shower.Is that an over kill in your opinion?I usualy install roofing papper over the studs-durock- then-tape and mud the seams and install the tile.Been doing it that way forever never had a problem.Thanx
As for being overkill? Perhaps. I personally don't do it but quite a few others will. To me, as long as the surface is being waterproofed, it's a lot less important what's under it. If you're comfortable with using Durock, go ahead. Is it needed? No.