5 Reasons Your Patio Is Sinking (And How to Fix It)
1. Not Enough Base Depth
Most common issue in Calgary.
Fix:
Lift pavers, excavate deeper, re-compact base.
2. Poor Compaction
Base wasn’t compacted in lifts.
Fix:
Reinstall properly with plate compactor.
3. Drainage Problems
Water pooling beneath patio.
Fix:
Regrade and install proper slope (2% minimum).
4. No Edge Restraint
Pavers spread over time.
Fix:
Install strong edge restraints.
5. Tree Roots
Roots lift or shift pavers.
Fix:
Remove roots and rebase affected area.
When to Repair vs Replace
Small section sinking?
Spot repair may work.
Widespread failure?
Full rebuild is smarter long term.
FAQs
How much does patio repair cost in Calgary?
Small repairs: $1,500–$5,000
Full rebuild: $10,000+