I've begun renovating my kitchen and have removed everything. Just drywall, wires and dust remain. We are on the 4th floor of a condo, wood frame, built in '91.I've pulled up all the tiles and I'm in the process of scraping away all the old mortar. Underneath is a layer of what looks like gray concrete and under that I assume is the plywood.What, most likely is this layer? It is smooth and grey and looks/feels like concrete. It is quite pitted where the tiles were, but smooth where the cabinets were. Could it be backerboard? I don't see any screws or obvious seams.Whatever this layer is, can I just patch and smooth over the pits and lay new tile over it? The old tiles I pulled up were installed in '91 when the building was built, and none were cracked, so I assume the floor was fairly well done and level.Thanks! via /r/DIY https://ift.tt/3061cpe
