How to Fix Sunken Patio Pavers

Sunken pavers are one of those problems that starts small and nags at you every time you walk across the patio. A single paver drops a quarter-inch, you trip slightly, and within a season three more have settled. The real culprit isn't the pavers themselves—it's the base. Sand shifts. Water percolates through. Foot traffic compounds settling over time. The good news is that fixing this doesn't require ripping out the whole patio. You can address problem pavers one at a time, and the fix is straightforward enough that you won't need special tools or contractor help. The key is understanding that patio pavers rest on a foundation of compacted base material and leveling sand. When that sand settles or washes away, the paver sinks with it. The fix involves lifting the sunken paver, inspecting and replenishing the sand base, and resetting it flush with its neighbors. Depending on how many pavers have dropped and how badly, this is a weekend project or an evening job.

1. Inspect the patio and identify all sunken pavers. Walk the entire patio surface and use a long straight edge or 2×4 laid across multiple pavers to spot dips. Mark sunken pavers with chalk. Check both individual low spots and broader settling patterns. This tells you whether you're fixing isolated pavers or addressing a systemic base problem across a section.
2. Remove pavers surrounding the sunken unit. Start with pavers adjacent to the sunken one. Use a flat pry bar or screwdriver to lift and remove the surrounding pavers first—this gives you room to access and lift the settled paver without fighting against compression. Stack removed pavers neatly to one side. You typically need to remove 3–4 pavers around the problem area to work safely.
3. Lift the sunken paver and remove old sand. Once surrounding pavers are clear, position your pry bar under the sunken paver's edge and lift it out. Inspect the sand base underneath—it's often compacted, washed away, or mixed with dirt and debris. Scoop out the old sand base completely using a hand shovel or dustpan. Remove at least 1–2 inches of the old material to ensure you're working with fresh, dry sand.
4. Add and level fresh polymeric or coarse sand. Pour fresh leveling sand (polymeric sand or sharp sand) into the excavated area. Spread it evenly with a trowel and build it up slightly higher than the surrounding pavers—the weight of the reset paver will compact it slightly. Use a level to check as you work. The goal is a perfectly flat base that will support the paver flush with its neighbors.
5. Reset the paver and check for level. Lower the paver carefully back into place, pressing down firmly to seat it in the sand. Check the height against adjacent pavers using a straight edge. The top surface should be flush or just barely proud of the surrounding pavers. If it's still slightly low, lift it again and add a thin layer more sand underneath. Reset and check again.
6. Replace the surrounding pavers and adjust for fit. Reposition the surrounding pavers around the reset unit. They should fit back in place without gaps if your base leveling was precise. If there are small height differences between neighboring pavers, you can make minor adjustments by adding or removing sand under those pavers as well. Check the entire patched area with a straight edge.
7. Fill joints and compact the base. Once all pavers in the affected area are level, sweep polymeric sand or fine sand into the joints between pavers. Dampen the joints lightly with a spray bottle if using polymeric sand—it will harden and stabilize the entire section. For regular sand, pack joints firmly with a broom and dampen lightly. The joints help lock pavers in place and prevent future settling.
8. Monitor the repair for the next few weeks. Check the reset pavers after a week and after a month. Occasionally a newly reset paver will settle another 1/8 inch as the sand beneath continues to compact—this is normal. If it's still level and flush with neighbors, you're done. If it's dropped noticeably, repeat the lift-and-reset process with a touch more sand. Most repairs remain stable after the initial settling.