For the tile floor membrane we used Schluter Ditra Heat, a waterproof, uncoupling membrane that we purchased from a tile supplies distributor. The membrane comes with the wires and thermostat for the floor heating. I found it very easy to install.
It can be installed directly over subfloor. The membrane comes in rolls and can be cut with a utility knife.
. For the floor tile we went with 10" hex from Design and Direct Source. We had an overall pleasant experience with them. We ordered about 275 square feet.
The transition between the sloped shower and the floor was a little tricky; especially near the drain. There was a lot of precise cutting we had to do. It was below freezing outside so I had to run a heater in the garage near the tile saw in order to keep the water from freezing! not fun!!
We started with the tile near the drain first because we wanted to make sure we had a full tile covering the linear drain. I.E. we wanted to make sure there wasn't a joint between two tiles here as it would be more prone to failure and separating from the mortar bed.
Maggie is mixing the grout! We used Tec InColor grout for this project.
Here is the tile with the drain cover removed.
Brandon E. Young