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How it works

How Relevel lifts and stabilizes concrete

Relevel uses polyurethane foam injection to correct uneven concrete without demolition. The process is fast, clean, and designed to restore sidewalks, driveways, patios, slabs, and other surfaces with minimal disruption.

Most projects are completed in a few hours, and many surfaces are ready for use the same day.

Worker patching a hole during the concrete lifting process

The process

A repair method built for speed and control

This process works by reaching the voids below the slab, stabilizing the base, and lifting the concrete with controlled foam expansion. It is a practical alternative to tearing out and replacing the slab. Relevel’s method is a good fit when concrete is uneven but still structurally sound. It helps reduce trip hazards, supports long-term stability, and avoids the noise, mess, and downtime that often come with replacement.

Benefit 01

Minimal disruption

Small access points make it possible to lift the slab without large equipment, demolition, or major disruption to the property.

Benefit 02

Precision lifting

The foam expands in a controlled way, allowing the team to make accurate adjustments as the concrete rises back into place.

Benefit 03

Same-day usability

Once the slab is leveled and sealed, the repaired area is typically ready for use within hours instead of days.

Step by step

What happens during a Relevel project

Each step is designed to restore support below the slab and bring the surface back to a safer, more even position.

Step 1

Drill

Precision access points

Small, dime-sized holes are drilled into the affected slab to create access points below the surface. This allows the team to reach the voids beneath the concrete with minimal impact to the surrounding area.

Step 2

Inject

High-density foam injection

Polyurethane foam is injected through the access points and into the space beneath the slab. As the foam expands, it fills voids, compacts loose soil, and creates a stronger base below the concrete.

Step 3

Lift

Controlled concrete leveling

The expanding foam gently raises the slab back toward its proper position. Each adjustment is carefully monitored to help achieve accurate elevation and long-term stability.

Step 4

Seal and finish

Clean finish, same-day use

After the lift is complete, the access holes are sealed and the area is cleaned. In many cases, the repaired concrete is ready for use the same day.

Common applications

Works well for the places where sinking concrete creates daily frustration.

Relevel is a strong fit for exterior slabs, interior concrete surfaces, and light commercial areas that need support without replacement.

✅ Driveways

✅ Sidewalks

✅ Patios

✅ Pool decks

✅ Garage floors

✅ Basement slabsInterior slabs

✅ Poured concrete walls
✅ CMU walls
✅ Stacked stone foundations

✅ Commercial walkways

Frequently asked questions

Common questions about the process

A few quick answers to help homeowners understand how concrete lifting works and when it makes sense to choose it.

What is concrete releveling?

Concrete releveling lifts and stabilizes sunken or uneven concrete by injecting polyurethane foam beneath the slab. It is commonly used for driveways, sidewalks, patios, and pool decks.

Is concrete leveling better than replacement?

When the slab is still structurally sound, leveling is often the faster and more affordable option. It avoids demolition and reduces downtime.

How long does the process take?

Many concrete leveling projects are completed in a few hours. The exact timeline depends on the size of the area and site conditions.

How soon can I use my concrete?

Polyurethane foam cures quickly, so many surfaces are ready for use the same day after the lift and sealing are complete.

Will the repair leave a mess?

The process is clean and minimally invasive. The access holes are small, and the finished surface is sealed after the repair.

What causes concrete to sink?

Concrete may sink because of soil erosion, poor compaction, water intrusion, or long-term settling below the slab.

Worker performing a concrete lifting process on a driveway.

Free estimate

Tell us what is sinking, shifting, cracking, or leaking.

Share the surface, the issue, and where you are located. Relevel serves Maryland, Virginia, and Delaware.

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