Revisiting the idea of uncoupling membrane...
Current Substrate
5 X 8 foot bathroom, concrete slab, ground floor. 32" of that length is a downward slope that I cut into the slab. A linear drain sits adjacent to the long wall of the shower (short wall of the bathroom). It spans the entire length of the shower.
I've installed a sheet membrane on the shower floor which extends almost to the toilet flange and have waterproofed it, and the rest of the shower, with Hydroban liquid membrane.
It's Arizona. The slab is 50 years old, and it hasn't moved, or cracked. I don't anticipate that it will. But, as I discussed in an earlier post, I'm installing 9MM tile and 3/4" hard-wood and I want to achieve a flush transition, so Ditra would not only aid in raising the tile to match the hard wood, but would provide the benefit of protecting the tile from concrete issues.
Questions
If I install the membrane, would I want to install it all the way down to, and around the linear drain?
If so, would I need to also install Ditra ON the tileable grate?
And... would still want to install my DECO-SG glass channel trim for the splash panel under the Ditra and cut out a groove in the Ditra, or on top of the Ditra, under the tile?
The reason for my line of thinking is that I'm not sure, if I were only to run the Ditra to the curbless entry, how to account for the difference in height between the shower floor, and the bathroom floor, which are supposed to simply flow together as a single floor.
Thanks!