Fixing the cracks

The freeze-thaw cycles lift sidewalks and driveways and ice forms in expansion joints, pulling the material apart. Rock salt can also break apart the top layer of concrete, causing even more damage.

Fixing the cracks or replacing the concrete can be done on a do-it-yourself basis, or you may need to hire professionals if it is a big project.

“Your first step is identifying what caused the crack,” Nawanna said. “It can be foundation causing it. It can be weather, accumulation from snow to warmer weather. After identifying the cause, then you can pinpoint the remedy.”

If it isn’t a major crack, the homeowner can go with MP1 caulk or an NR-201 caulk, “just a sealer,” he said. The sealant is pretty much for temporary use, but it could hold for several years.

“If it’s a major crack, you should seek professional help. Get it cut-lined, pull her out, replaced with extra concrete,” Nawanna said.

If it is a smaller crack, you still need to blow out the crack, making sure it’s clean so the sealant can actually grip onto the concrete, he said. “I would take an air compressor and blow it out, or a water hose. You could wash it out, let it dry out and then take your NR-201 or your MP1 and place it in there. Those two agents are self-leveling.”

If undertaking a major concrete replacement on your own, Nawanna advises you make sure your foundation underneath the concrete is packed well to keep water from getting underneath and possibly creating a sinkhole.

“If you’re going to tear out one section by yourself, what you would need is a hand tamper, masonry tools such as a float, a shovel, a mixing bucket and some concrete,” he said.

Probably the best way to deal with sidewalk cracks is to simply avoid them. Seal your driveway once a year, and if cracks are forming, fill them in immediately before the condition gets worse.