We are renovating our master bathroom and are also considering a modular steam shower, so I hope those with experience will chime in. We did learn that you can mix and match enclosure mfrs. and steam generator mfrs, e.g., put our preferred Thermasol generator in with an enclosure from a mfr. which typically includes a different mfr's steam generator.

Kerdi is fairly easy. The Kerdi Shower thread that I posted years ago was my first Kerdi install. You have to start somewhere. And if he's a decent and conscientious worker, he might actually be more meticulous than most with this being his first Kerdi installation. Though I haven't touched it in years, RedGard is a topical membrane that's a vapor barrier too. The thing is, with topical membranes on a shower floor I prefer to use a flanged drain instead of using a divot method with a clamping drain. With RedGard, you'd have to use the divot method in order to maintain the weep holes. So Kerdi would work. Or he could use Aquadefense, but only in conjunction with a vapor barrier behind it. Me? I'd use Kerdi.

Yup, 2" per foot for the ceiling... ...porcelain over natural stone... ...and for the generator, different generators can be placed in diffeent areas. Some need to be co-located near the shower, others can be 10, 20, or 50 feet away. The generator also needs to be sized for both the physical size of the steam shower and the thermal characteristics of the six sides of the cube that make up the shower. You;ll find info on most manufacturer's websites. You want a VAPORPROOF membrane...not just waterproof, but vaporproof...behind the tile on all six sides of the shower cube. And all plumbing penetrations should be sealed to the membrane. You want your lights to be vaporproof too. You usually won't have a vent fan within a steam shower, it'll be located just outside the shower. Were you to have a fan within the steam shower, steam vapor drive can do nasty things.

Creative Tile, I also have heard good things.....my plan has totally changed, you can search my name and find my design thread. I'm now doing a 48" neo angle. I want to go USG because they make the custom pan with the drain where I want it, and trimming these pans will obviously create some strange aesthetics at change of plane w/ wall. Problem is, no one wants to sell me one! Here in NJ, only distributor within 90 minutes are HD stores. I call them, and they don't know the custom pan exists. Local tile guy has Wedi, but very pricey, and it doesn't seem ideal for a neoangle curb, also no custom pan. I'm assuming you may have a connection with someone who will sell me one? Online USG email support for neo angle sent me back to uninformed home depot, and a general instruction which doesn't address how to wrap the 135 deg. angle. I'm going to call them one last time, if not I'll take my chances with kerdi membrane with a mud deck. 1 question on the USG product...if i go with the new ultralight foam, does it require full membrane, or just the seams? If it requires full membrane, should I just use fiberrock as it will probably be much cheaper? Any ideas how to do the 135 neoangle curb, I'm probably just going to borrow kerdi methods over at johnbridge, and use the sealant for any questionable corners . Thanks so much for your help!