Thanks for the comments Scott. I used hydro barrier and anti-fracture cloth on the whole floor, all the seems and hydro barrier behind all the tile, floor and walls. A little over kill, but like you said, better to have too much water protection than not enough. I also spent a lot of time getting the whole floor slightly pitched to the shower 1/4" drop where the mosaic tile stripe is, to contain the water and then 1/4" slope per foot in the shower. It was a good feeling when I turned the shower off and all the water went to the drain, leaving no puddles behind.