Installing vinyl plank flooring on concrete? This step-by-step guide walks you through the entire process, from prep to finish, in a real basement bathroom project. Perfect for DIYers looking for ...

Much to my surprise, I found a concrete mortar bed under the tile. I’m assuming I must remove the mortar and add more wood sub-flooring on top of the existing plywood subfloor.

Concrete is poured back in the trench to level the slab, and the new floor is covered with ceramic tile. Another option is to install a Saniflo plumbing system above the existing concrete slab.