I am finishing a bathroom counter. It's approx 75"x25" and will have two sink bowls
Right now I have the top made from 3/4" plywood. It is not marine grade plywood BTW. The tiles are cut and ready to lay. My original plan was to use structural adhesive to attach the tiles to the plywood and then grout. But I bet I need a waterproof substrate - backer board, cement board, Hardiboard? Problem is I don't want to make the top any thicker than it already is, though 1/8" or so would be fine. Any suggestions welcome on materials and method. I only want to do this once.
Thanks
Rex B DFW