smallest functional shower niche size?
In our new master bath, the tub is in front of the walk-in shower, and you can walk in either side. The shower is on the exterior concrete block walls, so a niche can't go on the walls. The only place we can do a shower niche is on the back of the built-up tub deck. Currently for various reasons, bracing, ect., we were told we can either do a 7" tall niche (18" long), or if we build up the tub deck a few more inches, we could get to 10" tall. I'm pretty sure 7" is ridiculously short. It's a couple hundred to do the niche: is it worth it to do a 10" tall one?