Shower help needed: proper slope for ledge on top of half wall?
Of course these things happen on a Friday when nobody's reading, but if any of you have advice, I need it asap! I have a half-wall on one side of the shower, and glass will go on top. My contractor today installed a quartz cap piece on top of the wall; it matches the counter. He put it at quite a slope - one side is 1/4" higher than the other, over a span of 6". I know he did that so water drains toward the inside of the shower, instead of toward the glass. But to my eye, without the glass there, it looks like a pretty exagerated slope. Will this kind of slope interfere with the glass-holding U-channel, which I assume has to sit on top of a flat surface? Do I need to yank that thing off there, before the thinset dries, or does this sound okay?
And by the way, the contractor doesn't normally do this counter-type stuff, so he wasn't completely sure how to attach the cap to the top of the wall. We decided thinset mortar would be a good plan. Were we wrong? What do people normally use?
Thank you for any help you can offer while I panic!