Concrete Jacking
Concrete jacking raises sunken concrete by pumping material beneath the slab through small drilled holes. The two main approaches are mudjacking (cement slurry) and foam jacking (polyurethane). It works on driveways, sidewalks, garage floors, and pool decks.
Two Main Approaches to Concrete Jacking
Concrete jacking breaks down into two primary methods, each using a different fill material:
Mudjacking (Cement Slurry)
Mudjacking pumps a mixture of water, soil, sand, and Portland cement through 1- to 2-inch holes drilled in the slab. The slurry fills voids and lifts the concrete back to grade. It costs $3 to $6 per square foot. Cure time is 24 to 48 hours.
Foam Jacking (Polyurethane)
Foam jacking (also called foam leveling or polyjacking) injects a two-part polyurethane resin through smaller 5/8-inch holes. The resin expands into closed-cell foam, filling voids and raising the slab. It costs $5 to $10 per square foot but cures in about 15 minutes and is waterproof.
Best Applications for Concrete Jacking
Concrete jacking works on most residential and commercial flat concrete surfaces:
- Driveways that have settled near the garage or street, creating a lip or uneven surface
- Sidewalks with trip hazards from one panel sinking below its neighbor
- Garage floors that have dropped, causing gaps at the threshold
- Pool decks where settling creates drainage problems or safety hazards
- Patios with uneven surfaces that collect standing water
Concrete jacking is not a good fit for slabs that are cracked into multiple pieces, severely spalled, or more than about 40 years old and deteriorating.
Concrete Jacking Contractors
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Concrete Jacking Cost
Concrete Jacking typically costs $3 to $10 per square foot, or $500 to $2,500 for a typical residential project. Your final price depends on the slab size, the amount of settlement, the method used, and your local market. For a detailed breakdown by method and project type, see our concrete leveling cost guide.
Concrete Jacking FAQ
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