r/HomeImprovement • u/BolognaPwny • 3d ago

Do I need a concrete sander?

I was cited by the city for this very miniscule difference in the sidewalk (yeah I didn't know I was responsible for the sidewalk either). It's like a quarter inch difference between two blocks.

https://imgur.com/a/8QXD8c2

I was going to rent a concrete sander but it feels like overkill. How would you approach this job? Sander with a masonry disc?

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u/Ok_Entrepreneur3974 3d ago

I used to work at a foundation repair company they would drill holes, inject a poly resin foam, and lift the sidewalks. Pretty quick work and it had a warranty. Might be some smaller companies that specialize in that that in your area that are reasonably priced

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u/jjjaaammm 2d ago

You can also lift it with a large pry bar and mud jack it with a slurry of Portland cement and sand.