Can You Put Ceramic Tile on Top of Formica?

Identification

• Ceramic tiles have a clay or clay mix composition and are available in sizes from 1 inch square to 24 inches square. The tiles undergo kiln-drying to harden and are available with or without a glazed surface. A common size used for tiling a countertop is a 12-inch-square ceramic tile, but you can use any size that fits your needs.

Requirements

• Formica is a plastic-type surface adhered to the countertop base with a cement. It is possible to attach ceramic tile over Formica as long as the edges and corners are square and not rounded. Ceramic tile is heavier than Formica, requiring that you install a brace underneath the countertop every 36 inches for extra support if the counter width is more than 24 inches.

Process

• Ceramic tile does not adhere to a dirty or damp surface, so clean it well with a mild soap and water, and let it dry fully before proceeding with the process. Use a notched trowel when applying the tile adhesive, to create a ridged surface. Begin laying the ceramic tiles along the outer edge of the counter. Leave an overhang that matches the depth of the tiles if you plan to adhere small tiles to finish the countertop depth edge. Look for tiles with a glazed finish on the edges so there are no raw edges on the counter. Another option for the countertop edge is adding a sealed wood trim or painting the Formica surface to match the tile color. Work your way toward the back of the counter, cutting the tiles as needed to make them fit along the rear of the counter.

Considerations

• Consider removing the Formica surface if there are any loose or peeling areas, and attach the ceramic tile directly to the wood surface. This takes extra labor but gives a sturdier application when there are problems with the Formica surface. Select a ceramic tile with a glazed surface to prevents stains or scratches on the surface. There is no need to apply a sealer to the tile, but you might want to seal the grout to limit staining.