Lovely bathroom, Annkathryn. I wanted my GC to give me a rough idea of extra costs before I bought the generator, but I may push back on a couple of items when it is time to actually build it. Our entire bathroom is long and narrow. It is 13.5' long, and 6' wide, except for the last 42" where it is 5' wide in the shower area. You enter from the bedroom at one short end, the first 6' is a double vanity, then there is a wall with a pocket door, then the toilet (going to be wall hung with tank in wall to save space), then the shower. So the toilet and shower are in the same space that can be closed off from the rest of the bathroom. I planned to put a Panasonic Whisper Warm fan just outside the shower in the toilet area. I hope that will be sufficient to clear any steam, as I do not really want a vent fan in the shower itself. We also have a small window in the shower that we leave open about 10 months of the year to get fresh air in the bathroom, so I can just open it back up after a steam. Except in December and January, we usually shower with the window open, so I am not sure we need a tilting glass vent to avoid showering in an air tight space. I'll have to find out how much extra that vent will cost.

Plenty - but it's had to just give you a # off the cuff. You can figure the tile cost easily with your current estimate. Considerations and some prices: You'll need to have a vapor proof enclosure behind the tile so that will mean Kerdi or another membrane. It's @ $3-$4 a SF installed. You can go with other designs but this is fastest and arguably the best way for the least $$$ when total system cost is looked at. That window will need to be double paned at least an triple is better. It should also be vinyl/aluminum ect. for the exposed frame in the shower. Your glass door will need an operable transom with a fan outside of it OR a suitable vapor proof fan inside the shower. $$$$ A cheapo fan or even a nice nice Panasonic for $150 is not going to cut it inside a steam shower. Labor costs to tile the ceiling will be more per ft. than the walls and floor. A Steam unit for 140 CU. Ft. +/- will start at $1000 and go to almost $4000. Another $400-$800 for controls. Lighting has to be vapor proof too. more $$$ You need to be certain to keep on top of the tile mechanic so that penetration of the Kerdi are tight and neat + around shower head and spray outlets,shower valve ect... they also need to be sealed with the proper sealant before the tile goes on. The holes in the tile around these also needs to be sealed. At a min. , steamers are an additional $2k and the price goes up from there.

I don't understand the last post to this thread? Thermasol offers a 5-year replacement warranty on all their controllers. Why would you pay to replace it? Maybe you had it more than 5 years? If so, then it's too bad it failed but how long do you expect it to last? I doubt you could expect a car to last reliably with no problems longer than 5 years, so why expect that of your steam shower. I have a PRO-395 that I installed 14 months ago. It just failed tonight. Not sure if it is the controller board or the heating element, but it stopped producing steam. Called tech support and they are shipping me a new replacement unit tomorrow and paying for the install, all at no cost. I am going to call them tomorrow to talk to them about the fact that it failed so soon. They are supposedly the best and charge a premium for their product. I am curious how they will explain that it failed so soon. Will update this post if they say anything interesting. Update: Spoke to them this morning and they are sending me a new unit, and pay for installation charge. One other thing. Someone in the tread above talked about making their shower with a 10 ft ceiling. Don't do that! That is just dumb, and will affect the experience of a good steam. If you ever want to make your steam shower bigger, do it in the length or width but never in the height. My house has 10 ft. ceilings, but my shower has a 7.5 ft up to an 8 ft. ceiling and that is plenty high enough. The 7.5 ft part is over the bench so the fact that it is lower there makes no difference because you are sitting down.

Beautiful steam shower you've got there AnnKathryn. What sort of stone is that? Wisconsin, KERDI is supposed to be approved now for steam rooms, though I don't believe that Schluter allows it to be installed over cement board. You'll want to check with their Technical Services department on that. I prefer to build my steam showers along traditional lines with mortar and metal lath. I've talked about my prejudice with my local Schluter rep and he's got me convinced that KERDI is an alternative with longevity but I'm still timid about hanging a couple hundred pounds of stone from a bonded membrane. He's promised to share with me enough case studies of existing installations to bring me around and I trust him on that. Best of luck, Shaughnn