Concrete answers
Mudjacking vs. foam leveling: what is the difference?
The short answer
Both lift sunken concrete by pumping material underneath it through holes drilled in the slab. Mudjacking uses a cement-based slurry. Foam leveling uses an expanding polyurethane foam that is lighter and needs smaller holes. Which is better depends on the slab, the soil and the budget.
Mudjacking (slab jacking)
- A cement-and-soil slurry is pumped under the slab to fill voids and raise it.
- Uses larger holes than foam.
- The material is heavy, which adds weight on soft soil.
- A long-established method.
Polyurethane foam leveling
- An expanding foam is injected and lifts the slab as it expands.
- Smaller holes and lighter material.
- Cures quickly.
- Usually costs more than mudjacking.
When neither is right
Lifting only works on slabs that are still in one piece. Badly broken, crumbling or very thin concrete is usually better replaced. And whichever method is used, the water problem that caused the sinking still has to be fixed.
What we recommend
The best approach depends on your slab and your ground. We will look at it and explain the options for your concrete. See concrete leveling.
This page is general information. Every slab and every yard is different, so the right answer for your concrete comes from looking at it in person.
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