Choosing to install tiles in your home, whether indoors or out, adds value and beauty to your home. Tiles are a versatile and durable building medium that have been favored by the home improvement community for years. Tiling a stone wall is only a challenge because the wall may need to be flattened before installation. With a bit of patience and a few basic tools, you'll have your new wall installed before you know it.

1
Ensure the wall is flat using the level. In any places where it is not flat, use thin set mortar and the notched trowel to even it out. You may have to use a liberal amount to make sure the wall is perfectly flat. Allow the thin set mortar to dry completely before beginning to tile.

2
Measure the length and width of the wall you will be tiling. Multiply these two numbers to get the total area you must cover. Purchase as many tiles as you will need to cover the stone wall, as well as 10 percent more. These extra tiles will account for any broken or damaged tiles.

3
Make a horizontal mark on the wall with a chalk line. Use the level to ensure that it is level with the ground. Make an intersecting vertical mark on the wall using the chalk line. Use the T square to make sure this line is perpendicular to the ground and the first line. These intersecting lines will serve as a guide for where to lay your first tile.

4
Mix only as much thin set mortar as you can spread in 1/2 hour, so it does not become brittle and dry. Use the smooth side of the notched trowel to spread a layer of thin set on the wall, using the intersecting chalk lines as a guide. Go over the smoothed thin set mortar with the notched side of the trowel. This will create grooves in the mortar which will help the tiles adhere to the wall using suction.

5
Place the first tile at the intersecting chalk lines. Apply even pressure on the tile as well as a slight wiggle to release any trapped air in the grooves you've made in the mortar. Place plastic tile spacers on all sides of the tile.

6
Continue spreading thin set mortar and placing tiles with spacers until you reach the end of the row. At this point, you may need to cut the tile to fit it into the space that remains.

7
Mark the tile where you want to cut it using a wax crayon and a straight edge. Line up the mark you've made with the mark on the carriage of the wet tile saw. Turn on the wet tile saw and carefully feed the tile into the rotating blade. Do not push it or the tile may break. Follow the line you've made until the tile comes apart.

8
Spread mortar in the remaining spaces and place the last cut tiles.

9
Allow the mortar to set according to the instructions. A typical drying time is between 12 and 36 hours. Remove all of the plastic tile spacers from between the tiles.

10
Mix the grout according to the instructions. Using the rubber float, spread the grout into the spaces between the tiles. Wipe away grout on the tile surface using a damp cloth.