EDIT: Some background: We are installing a floor-to-ceiling wall subway tile shower with 1/2" drywall and Kerdi membrane. I'm hanging the drywall and installing the fixtures and a pro will tile for us. I am wrapping up hanging the drywall and am stumped at the shower faucet rough-in.Ok I bought a two-handle mixing valve on the cheap, just because the wife and I didn't really want the single handle. Wasn't necessarily going for cheap but just wanted 2 handle and this is what Menards carried.Now after adjusting the offset of the rough-in frame quite a few times and racking my brain for a couple of hours here I cannot decide how the dang thing is installed with my half-inch substrate (gypsum board), then Kerdi membrane and probably 3/16" tile, as well as the mortar layers. I cannot figure out if this product is just untested and won't actually work for anybody or if I'm not doing something right. Any thoughts??Here's the product:Notice the flair of the brass body from the valves and you will start to realize that you can't install 1/2\" substrate with this with just 2 holes for the valve flanges because, the fact is, the shower head pipe to the flanges is like 9/16\" - 5/8\". So you have to cut out an oval to make it fit. That or excavate some sheetrock from the backside? Who has time for that?Here's the drywall over it. The faucet is as proud as possible due to the fact it's now jammed up against the shower head pipe.It's jammed against the shower head pipe, can't go back any further.One of the 2 Escutcheons:The threads start in pretty deep so (I imagine) you can't really get many rotations before you hit the wall tile.Builder-grade 3/16" wall tile flat against the substrate and the escutcheon is just started on its threads.Just barely threaded. Kerdi membrane is about 1 mm, but then you have some mortar sticking it to the drywall plus tile mortar plus tile. via /r/DIY https://ift.tt/2NlUIzN
