Repairing Sunken Patio Pavers on Sand Base

A DIY 10x10 ft patio used regular sand (not polymeric) between pavers. Heavy rain washed out sand, causing uneven settling. The homeowner wants to know how to lift and relevel sunken pavers without damaging them.

Realistic Assessment

Unfortunately, there's no shortcut—you'll likely need to remove most pavers to properly repair the base. The original installation lacked adequate compaction.

Repair Process

1. Remove affected pavers (and likely adjacent ones for access)
2. Add sand in small increments
3. Rake smooth, check level frequently
4. Reset pavers, tapping to consistent height
5. Check against neighbors continuously

Preventing Recurrence

• Polymeric sand: Binds joints, resists washout (search "polymeric sand")
• Masonry sealant: Sprayed on joint sand for some protection
• PermaTill/expanded shale: 1/8-1/4" stone in joints—too large to wash out, won't stick to shoes

Pro Tip

Consider a 3-4" compacted granular sub-base (crusher run, granite dust) beneath the sand setting bed. This provides stable, well-draining foundation that won't settle unevenly like soil alone.