Listen to Roarah, she has been thru it and came out on the winning end. after some real hardship.
Here is A free tip to anyone having a bathroom built or any tile work done. have this sentence written in the detailed scope of your contract or find someone else..
"All tile work to be performed must meet TCNA, ANSI, IRC ,UPC, IAMPO, specifications and standards as well as all MFG installation instructions throughout..."
If you are north of the border add "TTMAC"
This will force your GC to hire a competent tile crew, and your tiler to do it right. If they fail you have some/more recourse.
Dont ask me how I know all this.
Q
shower floor runs up wall
Q