Materials needed for your project.
CornerStone blocks & caps
Base Rock Needed
Use 5/8 minus or 3/4 minus crushed rock for the base material. You will need enough base rock for a foundation 4"-6" deep the length of your wall.
Drain Rock Needed
Use 3/4 minus crushed rock for the drain rock material. You will need enough drain rock to extend 12" from the back of your wall.