Concrete Lifting
Concrete lifting is the umbrella term for raising settled concrete slabs back to grade. Methods include mudjacking, polyurethane foam injection, and slab jacking. Most residential jobs cost $3 to $10 per square foot and take a few hours.
How Concrete Lifting Works
All concrete lifting methods follow the same basic process: a contractor drills small holes through the sunken slab, pumps material into the void underneath, and the expanding material raises the concrete back to level. The holes are then patched and the surface is cleaned up.
The three main methods differ in what material goes under the slab:
- Mudjacking uses a cement-based slurry. It costs $3 to $6 per square foot and works well for large, flat slabs like driveways and garage floors. Cure time is 24 to 48 hours.
- Foam leveling (also called foam lifting or polyjacking) injects expanding polyurethane foam. It costs $5 to $10 per square foot but cures in 15 minutes, is waterproof, and adds very little weight to the soil.
- Slab jacking is a general term that covers both mudjacking and foam-based approaches. Your contractor will recommend the best method based on your slab type, soil conditions, and budget.
When Lifting Makes Sense vs. Replacement
Concrete lifting is the right call when the slab is structurally sound but has settled due to soil erosion, poor compaction, or water damage. If the concrete is cracked into multiple pieces, badly spalled, or more than 30 to 40 years old and deteriorating, replacement may be the better long-term investment.
A good rule of thumb: if the slab has settled less than 4 inches and the surface is intact, lifting will almost always save you money and time. Read our level vs. replace guide for a full decision framework.
Concrete Lifting Contractors
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Concrete Lifting Cost
Concrete Lifting typically costs $3 to $10 per square foot, or $500 to $3,000 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 Lifting FAQ
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