Step 1: Prep the walls
Leave a 1/4-in. gap between the wall and the tape for the tile. Cover the countertops with newspaper or a drop cloth. Then Mark the center point of the wall and, with a level, draw a horizontal line across the wall from end to end. Also measure up from the finished countertop to the bottom lip of the upper cabinets to determine the number of tile rows needed.
Step 4: Grout and clean the tile
Wait 24 hours after installing the tile to add the grout. We used a premium grout that has a consistent color and resists stains better than standard grout. Mix the grout with water until it reaches mashed potato consistency, then put some on the wall with a grout float. Work the grout into the joints by moving the float diagonally over the tiles. Hold the grout float at a 45-degree angle to the tile. Scrape off excess grout with the float after the joints are filled.