Water erosion is one of the most common reasons for a patio to sink or dip over time. ... This soil can be affected by water erosion causing a dip in your patio. Along the same lines, the joint sand used between your pavers can erode as well, increasing the amount of water which flows below the pavers.

How do I stop my patio from sinking?

You have three main options for fixing a sinking patio: mud jacking, polyurethane foam, and replacement. Mud jacking uses a mixture of limestone aggregates and water to create a special grout. This grout goes under the sunken portions of the patio to replace the missing or compacted dirt.

How do I fix my sinking pavers?

Brush any old sand off the sides of the pavers, then set them back into place and drive them down until they're flush with the other pavers (Photo 4). Spread dry sand over the pavers, tamping and sweeping until the joints are completely full. That's it, your sunken patio is fixed!