Fix Sunken Pavers

Pavers sink because the base beneath them has failed. Water infiltrates, material washes away, or the original installation skimped on compaction, and gravity takes over. What starts as a slight depression becomes a trip hazard and a visual blemish that announces neglect. Fixing sunken pavers means addressing what's underneath, not just resetting the surface. Done properly, the repair becomes invisible and the base becomes stronger than it was originally. The work is physical but methodical—remove, rebuild, replace. Most homeowners can handle a small section in an afternoon, and the satisfaction of walking across a level surface again is immediate.

1. Lift the Sunken Ring. Use a flat bar or mason's chisel to lift the sunken pavers and the ring of pavers immediately surrounding them. Work from the center outward to avoid damaging edges. Stack removed pavers in the order you'll relay them.
2. Expose the Problem. Dig out the base material beneath the removed pavers until you reach stable, undisturbed ground. This might be two inches or it might be six, depending on how much material has washed out or settled. Remove all loose sand, displaced gravel, or soft spots.
3. Rebuild a Solid Foundation. Pour three-quarter-inch crushed stone into the excavated area in two-inch lifts. Compact each lift thoroughly with a hand tamper or plate compactor until the base is firm and level with surrounding undisturbed base. The final height should leave room for one inch of bedding sand plus the paver thickness.
4. Block Soil Infiltration. If the base failure was caused by soil infiltration or washout, lay landscape fabric over the new crushed stone before adding bedding sand. This prevents fine particles from migrating upward and destabilizing the base again.
5. Level the Sand Bed. Add a one-inch layer of coarse concrete sand over the compacted base. Use a straight board or screed rail to level it precisely with the existing bedding sand of adjacent pavers. Do not compact this layer—it remains loose so pavers can settle naturally.
6. Return to Pattern. Set pavers back into position following the existing pattern. Press each firmly into the bedding sand with a rubber mallet, checking level against adjacent pavers with a straight edge. Maintain consistent joint spacing by eye or with spacers.
7. Lock It in Place. Run a plate compactor over the repaired area three times in different directions. Use a rubber pad on the compactor to avoid chipping paver edges. The pavers should seat firmly and match the level of surrounding work.
8. Seal and Activate. Spread polymeric sand across the repair and sweep it into all joints until full. Remove excess from paver faces, then mist lightly with water to activate the binding agent. Keep traffic off the area for 24 hours while the sand cures.