From our trusted manufacturing partners at facilities around the world. Visit the Where to Buy section of this website to find the Keystone Licensee and retail locations nearest to you.
Color options vary by producer, and therefore, vary by region. Keystone’s licensed producers manufacture Keystone products in the most popular colors within their region.
Call the Keystone home office at 952-897-1040 or 800-747-8971 or email us at firstname.lastname@example.org. We will put you in contact with your local Keystone Region Manager who can help offer a solution.
Unlike other retaining wall products, Keystone’s pinned system offers the option of a near vertical or one inch setback installation. Keystone’s pinned system also allows you to achieve tight corners and radii automatically; maintaining the running bond pattern without having to cut units. The Keystone fiberglass pins also provide additional shear strength at the wall face and positive connection with geogrid which allows proper pre-tensioning and resistance to bulging during construction.
When using a 4” landscape retaining wall product, such as Keystone Garden Wall or Insignia Wall, we recommend building a gravity wall no higher than 2’h. A 6” landscape unit, like Legacy Stone or Country Manor, can typically build a 3’h gravity wall without the use of geogrid. Keystone’s structural retaining wall products, including Keystone Compac and Keystone Standard, can be engineered to construct walls from 6’h to 50’h+. Wall heights are dependent on the unit type, soil conditions, amount of batter, and surcharge on top of the wall. For our structural units, the best way to determine if your wall will require the use of geogrid is to consult the Keystone Gravity Wall and Soil Reinforced Wall charts.
We recommend the following formula:
Wall Height (in feet) x 1.5 = Depth of Unit (in inches) below grade.
Wall Height (in meters) x .125 = depth of units (in meters) below grade.
For example, a wall height of eight feet would need 12 inches below grade (8 x 1.5 = 12).
Please note: the number of buried courses should not exceed three unless otherwise specified by Keystone engineering.
Construction of the wall should begin at the lowest point of the wall, whenever possible. If the wall is going to tie into a building or structure, measure the distance from the corner of the Keystone unit to the edge of the building and make sure the distance is in an increment of 18-inches (457mm), or the full unit width to avoid having to cut a unit.
Yes. After the road base material has been leveled and compacted, 1/2" (13mm) to 1" (25mm) of sand may be used to help speed up the leveling process.
Most Keystone walls can be built directly on four to six inches of well compacted granular base. However, there may be occasions where a concrete leveling pad should be considered. For example, applications in or near water, taller walls built on soft sub-soils, or walls that are very long and a concrete leveling pad may help speed the installation process.
Granular materials, such as rock and sand, are best as these materials compact easily and won’t hold moisture that can increase the weight of the soil behind the wall.
Compacting backfill material in 8 to 12-inch lifts allows for effective compaction of the entire area behind the wall, without putting unnecessary pressure on the retaining wall units. Consult with a geotechnical engineer for further compaction criteria based on specific site soil.
Wall alignment should be checked at least every third course by visually looking down the wall or using a string line along the pin holes or tail positions. The wall should also be checked every 15-20' (4.6m-6.1m) to make sure the units are level from front to back. If the bubble on the level is high to the back, this means the wall is building to negative batter (leaning forward) and needs corrective measures.
Calculate the total area of your project in square feet. This measurement determines the number of pavers or patio stones and the amount of base and sand you will need. Visit our individual patio stone & paver product pages to determine square feet per unit. Hint: Add 10% to your total order to account for cutting.
(length of area in feet) x (width of area in feet) = area in square feet
For example: 20ft x 10ft = 200 sq.ft.