Repairing Sunken Pavers in a Driveway: Base Preparation and Joint Sand

Fixing Settled Driveway Pavers

Sunken pavers indicate base failure, often from non-uniform stone dust (crusher fines) that compacts unevenly under vehicle loads.

Correct Repair Process

1. Remove sunken pavers and surrounding ones for access.
2. Excavate failed base material to firm subgrade.
3. Add uniform masonry sand (not stone dust), screed level.
4. Compact with hand tamper or plate compactor (rental).
5. Reinstall pavers; maintain consistent joint width.
6. Apply polymeric joint sand last, per product instructions (some require wet/dry application).

Why Not Stone Dust or Hardening Sand First?

• Stone dust particles vary in size, leading to continued settlement.
• Hardening sand is a joint treatment, not a base material.

Pro Tips

• Work in sections to avoid lip at old/new transitions.
• Use a 48-inch level to ensure even courses.
• Compact base in 2-inch lifts for best density.

A proper sand base and polymeric joints restore stability and prevent future rutting.