Re-leveling settled pavers
Why pavers sink (it is almost always the base, not the stone), how a proper re-level is done, and what the Niagara freeze-thaw cycle does to an under-compacted base. See the re-leveling guide.
St. Catharines · Niagara interlock paver restoration guide
Interlock paver restoration in St. Catharines.
A practical guide to restoring the interlock you already have. Settled pavers re-leveled at the base, joints re-sanded so weeds stop, and the whole surface cleaned and sealed. Honest 2026 cost ranges, no fabricated numbers.
- Base repairthe real fix for settling
- Polymeric sandlocks joints and stops weeds
- Restore firstoften a fraction of replacement
Interlock guide 2026
What this guide covers
Everything you need to plan an interlock restoration
Polymeric sand and joints
Why regular sand washes out and weeds move in, how polymeric binder works, and the right sequence for re-sanding a full surface. See the joint sand guide.
Cleaning and sealing
The clean-first rule, how sealer type affects colour, UV protection, and salt resistance, and why the 3 to 5 year refresh cycle exists. See the cleaning and sealing guide.
Cost ranges
Illustrative 2026 per-square-foot ranges for re-leveling, re-sanding, and cleaning and sealing, plus the restore-versus-replace comparison that saves most homeowners thousands. See the cost guide.
Common questions
Why did my interlock sink, do weeds mean replacement, how long does sealing last, and whether your old interlock is worth saving. See the FAQ.
Why St. Catharines interlock settles
A large part of St. Catharines sits on clay-heavy soil. Clay holds water, expands when it freezes, and contracts when it thaws. A Niagara winter runs that cycle repeatedly, and each pass works on any weakness in the base beneath the pavers. A base that was rushed during the original install, or one where drainage was not set up to move water away from the house, tends to show its problems within ten to fifteen years as sunken spots, heaved sections, or a driveway that looks wavy across its whole length.
The pavers themselves are rarely the problem. Concrete interlock pavers are durable and often outlast the base by decades. The restoration case is almost always: fix the base, re-lay the original stone, and re-sand the joints. That is a fraction of what a full tear-out and replacement costs.
A note on how this guide works
This guide is published by Living Websites, a Niagara-based web-services company. The information here draws on publicly available knowledge about interlock installation, polymeric joint sand, sealer products, and typical Ontario contractor pricing. It is not affiliated with any specific interlock contractor, and cost ranges are illustrative typical-Niagara figures, not quotes.
Before hiring any contractor, confirm they carry liability insurance and WSIB coverage, and insist on a written itemized estimate before any work begins. See the contractor-vetting note in the footer of every page on this guide.
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