A Sidewalk Slab That Has Lifted

Freeze and thaw move sidewalk slabs. Water gets under a slab, freezes, and pushes one edge up, and sometimes it never settles back down. What is left is a lip at the joint, right where people walk without looking down.

Walk your sidewalks once the snow is gone. Look for joints where one slab sits higher than the next, and for slabs that rock when you step on them. Mark them before spring foot traffic picks up.

One lifted slab is usually a small fix: grind the lip down if it is minor, or cut out and replace the section if it is not. Left alone, the crack spreads and the edge breaks up.

We fix this: Concrete and Sidewalk Repair