How to Tile Over Brick & Tile
- 1). Mix TSP powder in a bucket with warm water, using about 1 cup of powder per gallon. Put on your rubber gloves. Thoroughly scrub the surface of the existing brick or tile floor. Rinse well. Let it dry for 24 hours.
- 2). Lay two wall-to-wall chalk lines over the floor, perpendicular to each other, so they intersect in the middle and cut the room into four even squares.
- 3). Spread thinset mortar over a few square feet at the intersection of the two lines, in the middle of the floor. Press your first tiles into place at the intersection, in the four corners created by the lines.
- 4). Lay additional tiles from the center, working toward the walls, spreading additional mortar as needed and evenly spacing the tiles. Cut the tiles at the ends as needed on your tile cutter. Let the tiles set overnight.
- 5). Spread grout over the tiles with your grout float, pressing it into the spaces between the tiles. Let it sit in the lines for 10 minutes. Use a damp sponge to wipe the excess grout off the tile face. Let the grout cure for two days before using the floor.