I am remodeling my bath and in the process am updating the shower/Tub fixtures with a Delta trim kit. The original colors were gold and the new trimkit is brushed nickel. I discovered that the kit does not have a diverter valve that goes through the face plate. But, the faceplate does have a knockout for one. Instead, it has a diverter valve on the tub spout. No big deal, I thought, I will just remove the gold diverter valve and screw a plug into it. that's when the problem started. I got a 1/2 inch plug from HD, wrapped it in teflon tape and screwed it in. Leaks like crazy. More tape, then some epoxy but to no avail. Back to HD. this time the REAL plumber guy who works there told me that the threads are not the same. So, I want to use a diverter but DELTA does not sell a brushed nickel diverter for some reason. I replaced the gold diverter but it now leaks too. I must have messed up the threads when I put in the plug. How is best way to plug up this hole?

Lovely! This is just the problem I have. Before I ordered my expensive cast iron jetted tub, I contacted Kohler. Kohler reps stated my cast iron tub could be used in a 3 sided alcove. They even have a pic of it installed in a 3 wall alcove as a shower tub combo, on their website. The tile lip/flange they sent is rubber with a ridge that fits between the backer board edge and top of the tub, held down with a putty. Had I known this was going to be so messy and undesirable I would have never bought the tub. I have been dissappointed with Kohler's lack of into on their products and recommendations that are unrealistic. I already had this tub installed long with my installation of expensive glass tiles as the surround. I will now have to worry about leaks at the rubber inserted flange. I picked the tub based on its use as a 3 wall alcove. Had I ordered quartz or some kind of deck over the tub, perhaps this problem would not be so apparent. I do realize that I will now not use this as a shower and use the hand held sprayer as a tub rinse spray rather than a shower.

You will need venting. can the trim kit be installed so that most of the venting works? Building it in solid, without any way for air/ steam to escape will be a mistake, imo, if your guy is talking about using mouldings.

There's 2 of us, and we do like to shower at the same time. So we think the length will be good. I'm glad to know 36" depth could be fine. I'd like to put a tiny wooden teak bench at the far end as well, which might help the space look "filled" when it's not in use, and be useful for shaving with.