before we move on to tile, tell me how you're waterproofing that niche
It's huge. what do you plan on putting in here? the niche should be half this height.
You don't have any mesh tape or mortar anywhere inside this niche or the seams.
I see one inch above it before it hits drywall. How are you waterproofing this? Sorry, but I see a lot of red flags here. This isn't done correctly.
also tell me how youre going to tape and mortar all those seams everywhere else
and if you don't have a vapor barrier behind those walls, tell me how youre going to waterproof the shower.
tell me what kind of screws you used on this substrate (and what is it that you used on the walls?)
lets see how the entire thing is done.
chair rail molding is big and bulky. do the niche like these (after you rectify the other issues)
Q
2 bars instead of a double bar?
Q