- 1). Mix a small amount of grout in a bucket with water following the grout manufacturer's directions. Stir the grout mix with a grout mixing paddle attached to a power drill. Mix until the grout is the consistency of smooth peanut butter.
- 2). Hold a rubber grout float at a 45-degree angle and spread the grout over the tiles in a sweeping motion. Work in small areas at a time and fill the joints fully.
- 3). Hold the rubber grout float on its end once the joints are filled in the area you are working and wipe the excess grout off the tiles.
- 4). Let the grout set a few minutes until you start to see a haze. Wipe off all of the excess grout by running a damp sponge over the tiles.
- 5). Polish the tiles with a rag. Let the grout set for the time recommended by the grout manufacturer.
- 6). Run a bead of silicone caulk on any corners, on the top of the row of tiles that meets with a wall or bottom edge of tile that meets with the countertop. Smooth the caulk with a wet finger for a finished look.
- 7). Cure the grout for three days after application by misting the grout with water. Seal the grout with a grout sealer after three days.
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