Hello TFP members, I am an architect designing a new single-family residence with a pool in Los Angeles and would like to know what grout people are using for the water line tile. We have had mosaic tile come loose in the past on some projects and are looking for the best water line tile grout on the market. Our office has specified C-Cure "MP Non-Sanded 923" in the past which seemed to work. Is there a product any experts would recommend? Maybe a Laticrete grout? Anyone used C-Cure in the past? Lastly, is it better to used mosaic tile with a mesh backer or does it not matter? Any thoughts are appreciated. Thanks in advance for your help.