- 1). Place a drop cloth directly under the counter top edge along the floor to catch any dripping grout. Remove any tile spacers between the tiles.
- 2). Mix the grout, following the manufacturer's instructions, in a bucket with a mixing stick until smooth. Use the edge of a grout float to apply the silicone grout in a line along the top edge of the counter top. Make the line about 2 inches wide and about 1/4-inch high so that it smooths on easily.
- 3). Slide the grout over the top of the counter top edge tiles in a diagonal motion with the grout float edge, covering both the top joint of the edge tiles and the joints along the grout edge of the counter top. Moving at a diagonal will ensure that you don't pop off the tiles by coming at them directly parallel to a tile joint.
- 4). Push the grout into the open joints, working down the line of grout and tiles until you've filled in all of the joints. If there's not enough grout in the 2-inch line of grout, widen the line by an inch and continue.
- 5). Wipe the grout from the faces of the tiles with a rounded sponge dampened in water. Using a sponge with edges could drag the grout from the joints as well.
- 6). Wait an hour for the grout to cure then wipe the tiles with a lint-free cloth to remove any powdered residue.
- 7). Brush the grout lines with tile and grout sealer to protect the counter top from moisture stains then wait 72 hours before using the surface.
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