- 1). Draw a horizontal line across the bottom of the wall, making it come up from the floor by the height of your porcelain tile plus ¼ inch. For example, if the tiles are 6 inches high, the line should be 6 1/4 inches above the floor.
- 2). Draw a vertical line at the middle of the wall, from floor to ceiling. It should intersect the horizontal line along the bottom.
- 3). Apply tile mortar with your notched trowel along the base of the wall from the bottom to just above the horizontal line. You will still see the line through the mortar.
- 4). Set the lowest course of tiles to the wall, starting at the center vertical line with the tops of the tiles lined up under the horizontal line. Put spacers between the tiles as you hang them. Leave a ¼ inch space below the tiles at the floor.
- 5). Build out sideways along the bottom of the wall, in both directions from the middle. Put spacers between all the tiles. Cut the tiles at the ends as needed on your scoring tile cutter.
- 6). Spread additional mortar onto the wall, above the bottom row of tiles, and set the next course of tiles in place. Start the course at the middle of the wall, putting spacers all around the tiles and working your way out to the edges. Repeat and continue, building all the way up the wall.
- 7). Let the tiles set for a day. Remove the tile spacers. Spread grout over the wall from the top, working your way down, with your grout float. Force the grout into the joints between the tiles while scraping it off the surface.
- 8). Wipe off the residual grout with a damp sponge. Let the grout set for 48 hours.
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