chainXzero
Active Member
I installed a check valve in my basement main sewage pipe. I am tiling over the concrete floor and I want to leave an access panel at the check valve. Any advice on how to attach a 12x12 inch porcelain tile to something so I can cover over that hole? I tried plywood first but it morphed and the thinset detached. I was thinking of mortaring the tile to a piece of cement board but I fear it will lack the structural integrity to support any weight.