Application
Sidewalk and walkway leveling
Uneven walkway slabs create trip edges. When a slab has settled downward and is intact, polyurethane injection can raise it to meet its neighbours and reduce the edge.
Why it settles
- Soil washout along walkway edges
- Poor compaction beside the house
- Freeze-thaw movement
Often suitable
- Slabs that dropped relative to adjoining slabs
- Walkways that slope back toward the foundation
Usually not suitable
- Slabs pushed up by tree roots (lifting cannot lower them)
- Slabs broken into small pieces
- Municipal sidewalks — these are usually the city’s responsibility
Risks, drainage and other considerations
- Confirm ownership: public sidewalks are typically maintained by the municipality
- Grinding may be a better fix for small upward lips
- Joint sealing helps limit water entry after lifting
Lift or replace?
Lifting keeps the existing concrete, so it makes sense only when that concrete is worth keeping. If it is broken up, deteriorated or heaved, replacement is usually the better route. See lifting vs replacement and what affects cost.
Check before you ask
Use the free slab self-check, the area calculator or the photo checklist, then send the summary with your request. See also the visual guides.
Questions
Can I fix the city sidewalk in front of my house?
Usually the municipality owns and maintains it. Contact your city before arranging any work.
What about a slab lifted by tree roots?
Polyjacking only raises concrete. Heaved slabs typically need root management, grinding or replacement.
Request an assessment
Other applications
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