Should I hire a pro or DIY to fix a few sunken pavers on my patio?

For a small area of sunken pavers (10-20 pavers), this is one of the few interlock repairs that many homeowners can successfully DIY. However, the underlying cause of the sinking determines whether a DIY fix will be temporary or long-lasting.

What causes pavers to sink in Metro Vancouver is usually one of three issues: inadequate base compaction during original installation, water washing away bedding sand from underneath the pavers, or tree roots displacing the base material. If only a few pavers in a small area have sunk and the rest of your patio remains level, you're likely dealing with a localized bedding sand issue that can be corrected with basic tools.

The DIY repair process involves lifting the sunken pavers with flat pry bars or specialized paver pullers (available at tool rental shops), adding or redistributing bedding sand underneath to bring them back to the proper level, tamping the sand with a hand tamper, and relaying the pavers. You'll need to match the surrounding grade and ensure proper drainage slope away from your house. The key is achieving the right amount of bedding sand — typically 1 inch of coarse sand that's screeded level and lightly compacted before laying pavers.

Metro Vancouver's clay-heavy soils and persistent rainfall mean that sunken pavers often indicate deeper base problems, especially in Surrey, Richmond, Delta, and Langley. If the sunken area is larger than about 20 pavers, if multiple areas of your patio are sinking, or if the same pavers keep sinking after you've releveled them, the issue is likely inadequate base preparation or poor drainage — problems that require professional excavation and base reconstruction.

Signs you should hire a professional include: widespread settling across your patio, pavers that rock or shift when walked on, water pooling on the patio surface, or if the sunken area is near a retaining wall or building foundation. These indicate structural issues with the base that DIY releveling won't solve. Professional repair typically costs $15-25 per square foot and includes proper base correction, not just surface releveling.

If you proceed with DIY, work during dry weather (challenging in Metro Vancouver from October through March), take photos before lifting pavers to remember the pattern, and plan to replenish polymeric sand in all the joints after completing the repair. The repair is only as good as your ability to achieve proper compaction and drainage — if water continues to wash sand from underneath, the pavers will sink again within a season or two.

Need help finding an interlock professional for larger repairs? Vancouver Interlock can match you with experienced contractors who understand Metro Vancouver's unique drainage challenges.

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