Seeking some remodel expertise. I am having new travertine coping and glass tiles installed in my 17 year old pool. My concern is that the company we hired to do the remodel is leaving a 3/4 inch mortar joint just below the coping. I also noticed he did not tighten up the corners where the glass tiles meet but is using mortar once again to bridge the gap around the turns. I would have to believe that this is going to cause issues down the road with water getting behind the glass tiles. The mortar line in my opinion is an eye sore and does not depict clean competent work. Can someone please elaborate as to why this is or is not OK to leave a mortar joint of this size below the coping. Every pic I have ever seen of pool tile... it is installed directly below the coping with maybe just enough room for an epoxy grout. Prior to this remodel our old tiles were directly below the coping. I have attached some pics. Thanks in advance for any input.