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Concrete Repair: Cracks, Spalling, and Sinking Slabs

5 min read·Updated July 7, 2026

Materials for common concrete repairs — hairline cracks, surface spalling, and settled slabs.

Match the repair to the damage

Hairline cracks (<¼"): polyurethane or vinyl concrete patcher Structural cracks (¼"–1"): epoxy injection kit or hydraulic cement Surface spalling: concrete resurfacer (Sika, Quikrete) Sinking slabs: mudjacking or polyurethane lift — hire this out

Materials

  • Wire brush + shop vac for prep
  • Concrete bonder (SBR latex)
  • Polymer-modified patcher or resurfacer
  • Curing compound or wet burlap for cure
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