How To Install A Flagstone Retaining Wall

How to Install a Flagstone Retaining Wall

Retaining walls are an excellent way to create raised garden beds, level out sloping yards, or add visual interest to your outdoor space. While there are many different materials you can use to build a retaining wall, flagstone is a beautiful and durable option.

Flagstone is a type of natural stone that is quarried in thin, flat slabs. It is available in a variety of colors and textures, so you can find the perfect flagstone to match your home's exterior.

Materials You'll Need:

Flagstone
Gravel
Sand
Mortar
Landscape fabric
Shovel
Trowel
Level
Tamper

Steps:

1. Prepare the site. The first step is to prepare the site for your retaining wall. This involves clearing the area of any vegetation or debris. You will also need to dig a trench along the line of your wall. The trench should be about 12 inches wide and 12 inches deep.

2. Lay the base. Once you have dug the trench, you need to lay a base of gravel. The gravel will help to drain water away from the wall and prevent it from shifting. Spread the gravel evenly in the trench and tamp it down until it is firm.

3. Set the first course of flagstone. The first course of flagstone is the most important, as it will determine the level of the rest of the wall. Start by setting the first flagstone in the center of the trench. Use a level to make sure that the flagstone is level. Once the first flagstone is set, you can begin to add the remaining flagstones in the first course.

4. Set the second course of flagstone. Once the first course of flagstone is set, you can begin to set the second course. The second course should be staggered in relation to the first course. This will help to strengthen the wall. Use a level to make sure that each flagstone is level.

5. Continue setting courses of flagstone. Continue to set courses of flagstone until you have reached the desired height of the wall. The last course of flagstone should be set with mortar. This will help to secure the wall and prevent it from shifting.

6. Fill the joints. Once the wall is complete, you need to fill the joints between the flagstones with mortar. Use a trowel to apply the mortar to the joints. Make sure that the joints are completely filled.

7. Cap the wall. The final step is to cap the wall with a layer of coping stones. Coping stones are flat stones that are placed on top of the wall to protect it from the elements. Set the coping stones in place with mortar.