To repair the sinking of a granite tombstone in a cemetery, the following steps should be taken:

1. Assess the Situation

• Evaluate the extent of the sinking and determine if the issue is caused by soil erosion, inadequate foundation, or structural damage to the tombstone itself.

2. Obtain Necessary Permissions

• Contact the cemetery administration to secure any required permissions before beginning repairs, as most cemeteries have regulations regarding monument maintenance.

3. Disassemble the Monument

• If the sinking is severe, carefully dismantle the tombstone components to prevent further damage and gain access to the foundation.

4. Repair or Replace the Foundation

• Remove the old foundation if it is unstable or damaged.

• Install a new foundation, typically made of reinforced concrete, to provide a stable and level base.

5. Level the Ground

• If the sinking is due to soft or eroded soil, replace the affected area with compacted gravel or sand to stabilize the ground before placing the new foundation.

6. Reinstall the Tombstone

• Reassemble the tombstone securely, ensuring all components are aligned and properly attached.

• Use appropriate adhesives or fixings to maintain stability.

7. Seal and Protect

• Apply a weather-resistant sealant, if necessary, to protect the granite and prevent water penetration that could weaken the foundation over time.

8. Routine Maintenance

• Periodically inspect the tombstone and its foundation to catch and address any early signs of instability.

Recommendation: It is strongly advised to engage a professional monument repair service or stonemason. They have the expertise and tools to perform the repairs safely and in compliance with cemetery regulations.