Concrete Lifting: Everything You Need to Know

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What Is Concrete Lifting?

Concrete lifting, also known as “concrete leveling”, is the process of raising a sunken or settled concrete slab by injecting a material beneath it. Once the material fills any voids and lifts the concrete, it solidifies or dries to create a strong, stable base.

• Polyurethane foam concrete lifting

How Does Concrete Lifting Work?

Although difficult to perform and perfect without the right tools and training, concrete lifting or leveling is a straightforward process that follows three basic steps no matter the method being used:

1. Holes are drilled in strategic locations throughout the affected concrete slabs.
2. A compound is pumped through the holes and underneath the slab where it fills any voids and creates enough backpressure to cause the concrete to rise.
3. Once the concrete is in the proper place, the drill holes are patched.

Polyurethane Foam Concrete Lifting

Lifting Compound

The foam concrete leveling/lifting method uses a two-part polyurethane foam that, when injected under the concrete slab, combines and undergoes a chemical reaction that causes the foam to expand. That expansion puts pressure on the settled slab and causes it to rise.

Drill Hole Size

The drill hole size needed for foam concrete leveling is around ⅝ inches in diameter