A common issue with pavers after installation is edge failure. This can happen for several reasons, including improper installation, too much sand in the base layer, and using the wrong edge material. Knowing how to prevent edge failure will ensure long-lasting paver layouts.
The causes of edge failure
Edge failure is more common with large-scale layouts. Lateral movement can occur when there is a lot of traffic passing over the pavers. In areas where temperatures fluctuate, thermal expansion and contraction can lead to changes. Water runoff and erosion are common, especially with pavers that are on unlevel ground. Uneven ground conditions can also lead to soil shifting beneath the base, causing edge failure.
Upgrading your edge restraints
For large-scale paver layouts, consider upgrading to high-quality edge restraints. In most cases, the basic plastic edging won’t be sufficient. Instead, work with a professional to select something like concrete curbing or aluminum edging. If plastic is still a consideration, there are commercial products that are much thicker. A knowledgeable professional can ensure restraints are deep into the base layer, providing security.
Reinforcing the perimeter
More stress will naturally occur at the edges of a paver system. Focusing on perimeter strength is ideal. Reinforcement techniques include extending the base approximately 1 foot beyond the edge of the pavers in high-risk areas. Increasing the depth of the base is also an option. Minimization of settling is achievable with proper compaction of the soil underneath the pavers and specifically the edges. This prevents settling. You can also upgrade your base materials.
Using joint stabilizers
Typical paver installation involves the use of sand in the joints. This can wash away over time, especially on uneven surfaces. Using joint stabilizer or polymeric sand can help harden the joints and reduce the risk of erosion. Minimizing weed growth can maintain secure interlocking, which prevents failure of edges.
Preventing water runoff
Edge failure is commonly the result of water runoff. Poor drainage is common with sloped installations when soil moves and bases erode. You can address this problem during planning and installation by sloping the paver surfaces away from the edges of the area. You may want to consider investing in French drains to direct the movement of water. There are also permeable pavers that can be part of a layout in areas that are prone to runoff. A knowledgeable professional can assess the location of your paver installation project and help you come up with a prevention strategy.
There are many different options for preventing edge failure in a large-scale paver installation. Find paver installation inspiration by following us on Facebook and Instagram. Reach out to a professional in your area for assistance with the planning and installation process.
