If the formica is relatively slick, use a palm sander to roughen the surface to ensure a good bond between the mastic, tile and formica.
However if your formica is not the shiny slick type, but is (a dull surface), you can lay the tile directly over the formica with no problem whatsoever.
I had a new countertop made for one of my bathrooms. It was covered with a dull surface formica. A week later, I tiled over it with out doing any prep work.
Home Depot carries a very good premixed mastic made especially for walls and countertops, called, (Acrylpro). I've used it in both bathrooms and the kitchen on walls and countertops.
If you plan on tiling your floors, you will need to use a thinset mortar mix.
However if your formica is not the shiny slick type, but is (a dull surface), you can lay the tile directly over the formica with no problem whatsoever.
I had a new countertop made for one of my bathrooms. It was covered with a dull surface formica. A week later, I tiled over it with out doing any prep work.
Home Depot carries a very good premixed mastic made especially for walls and countertops, called, (Acrylpro). I've used it in both bathrooms and the kitchen on walls and countertops.
If you plan on tiling your floors, you will need to use a thinset mortar mix.
