I'm re-modeling a bathroom. I have discovered that the bathroom floor is made up of what looks like concrete with a ceramic layer on top, the ceramic layer being approximately 0.05 to 0.1" thick. The ceramic layer is textured to look like 1" square tiles. I think that the concrete is about 0.375" thick and is laid on a sub-floor of plywood. I have attached three photographs as .JPEG files Has anyone ever come across this kind of surfacing before? If so:- How do you get it up? Can you get it up without damaging the plywood sub-floor? Thanks.