Hello,

Remodeling a bathroom and using a contractor. He's a general and he's
going to do the tile install since he's cheaper than the tile guy. The
tub is installed with 3 walls surrounding. They've put up green board
around the tub and then his plan is to install wonderboard 6' above the
tub and then tile on top of that. Bullnose to cover the wonderboard.

I was at Home Depot today looking to see what kind of tile they had and
explaining the job to a guy there. He said that install method was not
to code and problematic. Condensation can happen behind the greenboard
and rot it out. He said the proper way to do it was no green board and
just use backerboard against the studs (same as wonderboard?) and tile
on that.

Been looking around the net and have seen sites showing both of these
install methods? Any advice. Been seeing info on using a membrane or
waterproof felt. Should that be used in either of these methods?

Thanks.