I'm building a garage workshop with a small bathroom.
The floor is a concrete slab.
The corner of the bathroom has a role in, curbless shower.
My wife is interested in either tiling the whole bathroom or none of it at all, and therefore not interested in doing just the shower.
The slab will have a recess for the shower into which will be added the usual pre-sloped mortar bed, shower liner, and then second layer of mortar.
My question is whether I can skip putting tile on top, so the appearance of the concrete of the shower blends into the concrete floor of the bathroom.
I have found very little information on this idea.
I did find this thread, which caused me some concern that the upper layer of mortar would fail to shed the water and just absorb it, causing problems later:
www.diychatroom.com
I'm trying to figure all this out before the mason pours the slab so, if tile is needed I can recess the entire bathroom area to compensate for the thickness of the tile, avoiding a lip between the bathroom and the rest of the garage.
Thanks for the input.
The floor is a concrete slab.
The corner of the bathroom has a role in, curbless shower.
My wife is interested in either tiling the whole bathroom or none of it at all, and therefore not interested in doing just the shower.
The slab will have a recess for the shower into which will be added the usual pre-sloped mortar bed, shower liner, and then second layer of mortar.
My question is whether I can skip putting tile on top, so the appearance of the concrete of the shower blends into the concrete floor of the bathroom.
I have found very little information on this idea.
I did find this thread, which caused me some concern that the upper layer of mortar would fail to shed the water and just absorb it, causing problems later:

Poured Concrete Shower Floor
I have a shower with a poured concrete floor. When it was new, I finished it with concrete stain and applied water seal over it. That lasted about two years before it began to stain and became very hard to clean. (Also, a small crack developed that needed to be patched.) So I sanded it down...
I'm trying to figure all this out before the mason pours the slab so, if tile is needed I can recess the entire bathroom area to compensate for the thickness of the tile, avoiding a lip between the bathroom and the rest of the garage.
Thanks for the input.