To answer you question, I don't know BUT, I guess I would ask, is that what you want? Personally, I don't like doorless showers because they get too cold. If you are worried about the door being too small, I can tell you we did a 24" glass door on our shower and love it. The installer said something about, "This door might be the smallest one I've installed, but I like it. It makes sense" Also something to consider, where will you can your towel to grab so you can dry off in the shower? We had a hole put into our glass when it was fabricated and bought a hook from the same glass company that was made for that purpose. I ask b/c based on your design above, it doesn't look like there is any obvious, good location to hang a towel.

I think you will be ok with this as a doorless setup, especially if you use a rainhead. That is what we did. Our shower is 4 x 5 with the rainhead mounted in the middle. We get very little spray out. And the doorless setup is fabulous! If you don't do a rainhead from the ceiling, I would recommend mounting the shower head on the wall on the left.

I have a large, walk-in, doorless shower.
Make SURE you supervise the floor tiling. Ours has an almost imperceptable slant towards the drain, but it also has a dip that collects water.

I would recommend a rain head, too, with a shower as small as yours. If not, the spray is going to go all over the place. It's almost unavoidable.

I like ours. I'd redo the floor if I had the $$.

Christine

what is considered "Large"? I thought the standard was something like 3x3 for a shower or 3' depth and 4 'width ... so I figured a 4ft depth and 4ft offset by 6ft would be fairly spacious (doorless or not...) when you start getting larger -- is that considered "2 person" or what is the thought...just wondering.

and when rainhead is mentioned...is that "only" a rainhead? not a wall mount as well? our initial thought was to place one on the tub wall side?

thanks for the replies

I recommend a rainhead as a secondary head, but I'd never advocate a rainhead as the only head in a shower.

I figure showers are getting "large" when they get to 42" and larger.

For the shower depicted, with a door I'd advocate putting the supply valves on the sink wall. If you reversed the swing of the door then I'd say put them on the tub wall. That way you can open the door and turn on the shower valve without having to step in the shower. With doorless, the supply valves could go on either the sink or the tub wall.

If just using a wall mounted standard head, for minimal overspray I'd recommend the head on the exterior wall. I'm not sure where you live (freezing climate or not) but I'm in the northeast where I don't like to bury water supply pipes in exterior walls, even with foam behind the wall and using 2x6 construction. You could surface mount them as an option. If the exterior wall is not an option, then the "bottom" wall would be my next choice, offset slightly towards the exterior wall...essentially in line with the floor drain as depicted.

If this is a one-person shower then I'd do a through-the-ceiling rainhead, with the head centered over the floor drain.

With no door it's likely you'll get a little overspray out the doorway, but nothing significant unless you're overly enthusiastic in the shower. And no, I'm not going to define "overly enthusiastic". lol

You could give it a shot as a doorless setup and add a door later if things don't work out.

Has anyone used granite for walls and ceiling in shower? Don't want any more grout lines - any other ideas

I don't know what is considered a "large" shower but speaking as someone who probably does have a large shower (3'x6' or 7'), we made it as big as we could. In part b/c if both my husband and I were showering together (merely a time saver, not necessarily sexual) we each wanted enough space to do our regular shower routine without bumping into each other. Each having our own showerhead means we can keep it set at our preferred temperature (and it stays that way b/c he always uses his side and I always use mine). And lastly, we have two small kids, both of which shower with me on occassion and they can play with toys near the bench seat while I bathe (we even installed a lower hold for the handshower so we can pull it down so the shower is closer to their level). I realize perhaps this information might not be helpful to you, or your exact design, but perhaps someone else reading will have an "a-ha" from some of these thoughts.

thanks for all the replies -- we're in the south-- but i'm not real certain how fond builders are of running the pipes throught the exterior walls either...I guess a lot of it just depends on how the angles end up once everything falls into place.

Regarding plumbing in exterior walls:

You can place the supply valve on an interior wall, then run the outlet pipe that goes from the valve to the shower head up the interior wall and into the ceiling, across the ceiling (pitched down slightly), then down into the exterior wall, and out the shower arm to the head.

The pipe will self drain when the water supply valve is turned off.

I've done that a few times. Not a worry.

we have a doorless shower and it's about 4x5. I absolutely love it! I don't get cold in there as long as I'm in the water (and we don't even have a door to the bathroom!). There's a little overspray onto the shower threshold but it's no big deal. I have a bathmat at the shower entrance and that catches any stray drips. We just have a handheld mounted shower head and it is enough. I would put your shower head on the sink wall. You should be fine and you will love not having to clean that glass!!

We just put in an open shower, and I love it. I would recommend a handheld showerhead on a slide bar that swivels. And, I'd put it on your left wall. That way you could have some control over the direction of the water spray. I'd also do the rainshower, as I've found that both showerheads running at same time keep the shower warmer. You can check out the link below to see photos of our shower. Good luck!

Here is a link that might be useful: Sweet Chaos blog