Clear them and refill with a flexible joint sealant. Joints exist to let the slab move; packed with grit they cannot, and the slab cracks somewhere else instead.

You can handle this one yourself. No call needed.

Related

• Cracks radiating from a corner
• Driveway settling near the garage
• Spalling surface flaking off
• Water pooling on the drive after rain
• Tree roots lifting a section
• Pour scheduled in extreme heat
• Rebar or mesh unclear in the quote

Back to Concrete.

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Written by Jaylan Jones. I Like To Exterior Services earns a referral fee when a call connects to a contractor. See our business-model disclosure.