How to Install 4-Inch Bathroom Tiles

Tile comes in all shapes and sizes. In a bathroom, using 4-inch tile works well due to the smaller area. The tile can be added to the floor or walls to match any decor. Putting tile in a bathroom helps improve your home’s value, makes removing dirt and grime easier and adds a long-lasting, durable finish. Since 4-inch tiles are smaller, it may a longer to complete tiling in the bathroom tiles, but the finished product is worth the additional effort.


1. Prepare the floor or wall where you plan to install the 4-inch bath tile. Remove all staples, screws and nails from the location. Use a crack filler or caulk to fill in the holes that may be left over. Also, make sure the surface is level.

2. Apply thin backer board to the floor or walls where you are going to lay the tile. Screw the backer board in place by using the pre-marked areas, which are about six inches apart. On the walls, make sure the board is screwed into a stud.

3. Prepare your glue or mortar, which is used to hold the tile in place. Gather your tile and use a trowel to place the glue on the backside of the tile. This helps prevent the glue from dripping if you are tiling a wall. Immediately press the tile against the backer board and hold it for a few seconds. Place a small spacer in between each tile.

4. Keep the tiles aligned and square by using the grid on the backer board as a guide. Continue until the area is covered with the tile in the pattern you choose, saving the cutting for last.

5. Measure for the edge tiles you need to cut. Measure from the outside wall to the next tile in place. Add the distance for the spacer then make the cut. Use a wet saw or a tile-cutting tool to cut the tile. Glue the cut tiles in place.

6. Mix your grout after the surface is covered and the tiles have set. Mix it to a peanut butter consistency. Apply the grout with a large sponge dipped in water. A tile float may be used on the floor, but you may find a sponge easier to maneuver on the wall. Continue spreading the grout until all of the spaces are filled in and smoothed.

7. Allow the grout to set and then apply a sealant to the grout. Since the tile is in the bathroom, a moisture sealant will allow the grout to be more water-resistant and prevent moisture from seeping onto the backer board.