Does the concrete need to be removed before it is lifted?

No. For suitable slabs, the existing concrete stays in place. Relevel drills small access holes and injects polyurethane foam beneath the surface. As the foam expands, it fills gaps, helps restore support, and raises the settled concrete without the demolition and removal involved in replacing the slab.

How do you control how much the concrete rises?

Relevel monitors changes in the slab’s elevation as the polyurethane expands beneath it. The team controls the injection and adjusts the lift as work progresses. The goal is to improve the concrete’s position and support, with the condition of the slab and surrounding surfaces guiding the repair.

What happens to the access holes after the repair?

After the lift is complete, Relevel seals the small access holes and cleans the work area. The repair keeps your existing concrete in place rather than replacing the entire surface. The team reviews the finished work and explains when the repaired area can be used.

How it works

A clear process.
A controlled repair.

From the first photos to the final cleanup, Relevel explains what the property needs and how the proposed repair will work. The lifting process begins with the condition of your concrete.

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Injecting foam during the concrete lifting process.

First, understand the project

An estimate comes before the work.

01

Tell us what you see

Send optional photos and the property ZIP code, or call to describe the issue.

02

Review the condition

Relevel considers settlement, voids, access, and water issues. A site visit may be needed.

03

Agree on the repair

Review the recommended scope, estimate, and schedule before the work begins.

Concrete lifting, step by step

Reach the support.
Raise the surface.

Drill small access points

Small holes allow the team to reach the space below the existing slab.

Inject polyurethane beneath the slab

The dual-component foam expands into voids and helps restore support beneath the concrete.

Monitor the lift

The team controls the injection and monitors changes in elevation as the slab rises.

Seal the holes and review the result

Access holes are patched, the work area is cleaned, and the team explains when the surface can be used.

Polyurethane foam injection concrete lifting process.

Different problem, different method

Leaking walls use a separate system.

Relevel uses single-component polyurethane for water intrusion through poured concrete, block, and stacked stone walls. This water-reactive material targets cracks and voids along the entry path.

Explore wall waterproofing

What to expect on timing

Many lifting projects take a few hours, and some repaired surfaces can be used the same day.

The repair method, area, access, and site conditions determine the schedule. Relevel confirms what applies to your project.

Your questions, answered

A few answers before you decide.

Learn what repair can do, what affects the cost, and how to take the next step.

Browse all FAQs

Free estimate

Before you replace it, let’s take a look.

Send your project details and a few photos, if you have them. Relevel will help you understand whether repair is the right next step.