RESTORING A SUNKEN GARAGE FLOOR WITHOUT REPLACING THE CONCRETE
A garage floor supports the weight of vehicles, storage, tools, and everyday activity. When the concrete begins to sink, it can create uneven surfaces, gaps, and changes in how the garage floor drains.
That was the concern at this Glen Ellyn home.
Sections of the garage floor had settled and needed to be lifted and stabilized. The homeowner wanted to improve the floor’s elevation and restore support beneath the concrete without the expense and disruption of removing the existing slab.
Rather than tearing out the garage floor and pouring new concrete, Raise-Rite used polyurethane foam injection to lift and stabilize the affected areas.
The Challenge
The garage floor had experienced settlement, leaving portions of the concrete lower than their intended elevation.
Unlike outdoor sidewalks or patios, garage floors are enclosed spaces where uneven concrete can affect vehicle parking, storage, and daily movement.
The settlement created several concerns:
- Uneven areas across the garage floor
- Potential trip hazards
- Loss of support beneath the concrete
- Possible gaps along adjoining surfaces
- Concern about additional sinking or cracking
- The cost and disruption of replacing the garage floor
A sinking garage floor is not always a sign that the concrete itself has failed. In many cases, the supporting soil or fill material beneath the slab has consolidated or shifted.
The homeowner needed a solution that would address the unsupported areas while preserving the existing garage floor.
The Raise-Rite Solution
After evaluating the garage floor, our team determined that the affected concrete could be lifted and stabilized using polyurethane foam.
The goal was to improve the slab’s elevation while filling voids beneath the floor.
Our repair focused on:
- Lifting settled garage floor sections
- Improving uneven concrete elevations
- Filling voids beneath the slab
- Restoring support under affected areas
- Stabilizing the existing concrete
- Avoiding unnecessary garage floor replacement
Polyurethane foam injection allowed our crew to work through small access holes rather than remove large sections of concrete.
This approach helped minimize disruption while addressing the settlement beneath the garage floor.
The Fix (3-Step Process)
Step 1: Drill
Small injection holes were strategically drilled through the affected garage floor.
These holes provided access to the unsupported areas beneath the slab without requiring extensive demolition.
Step 2: Pump
High-density polyurethane foam was injected beneath the settled concrete.
As the foam expanded, it filled underlying voids and gradually lifted the garage floor. Our technicians monitored the movement to improve the slab’s elevation while accounting for the surrounding concrete and garage structure.
Step 3: Patch
Once the garage floor was lifted and stabilized, the injection holes were patched.
The existing concrete remained in place, avoiding the lengthy process of breaking out, removing, and replacing the garage floor.
The Results
The completed repair helped restore a more stable and functional garage floor.
The homeowner benefited from:
- Improved garage floor elevations
- A more even concrete surface
- Reduced trip hazard concerns
- Better support beneath the slab
- Filled voids under settled areas
- Preservation of the existing garage floor
The repair addressed both the visible settlement and the lack of support beneath the concrete.
Instead of replacing the garage floor, the homeowner was able to improve its condition while keeping the existing slab in place.
WHY GARAGE FLOORS SETTLE IN GLEN ELLYN, IL
Garage floors can settle for several reasons, even when the concrete itself remains structurally sound.
Many garage slabs are poured over compacted soil or fill material. Over time, this material can consolidate, shift, or develop voids that leave sections of the concrete unsupported.
Common factors contributing to garage floor settlement include:
- Soil consolidation beneath the slab
- Poorly compacted fill during construction
- Moisture changes in the supporting soil
- Water movement beneath the garage
- Voids developing below the concrete
- Long-term settlement of underlying material
In Glen Ellyn, seasonal moisture changes and Illinois freeze-thaw conditions can also contribute to movement in the surrounding soil.
When the material beneath the garage floor loses its ability to support the slab evenly, sections of concrete may begin to sink or crack.
Polyurethane concrete lifting can help restore support and improve slab elevations when the existing floor is suitable for repair.
RAISE-RITE CONCRETE LIFTING IN GLEN ELLYN, IL
Since 1974, Raise-Rite has helped Illinois homeowners repair sinking and uneven concrete, completing more than 100,000 projects.
Our concrete lifting services can help with:
- Garage floor lifting and leveling
- Driveways and garage approaches
- Sidewalks and walkways
- Front steps and entryways
- Patios and porches
- Concrete slabs and void filling
- Other settled concrete surfaces
If your garage floor is sinking, uneven, or developing gaps, replacing the entire slab may not be necessary.
When the concrete remains in suitable condition, polyurethane foam lifting can help restore its elevation and provide support underneath without removing the existing floor.
Learn more about our Glen Ellyn concrete lifting services.
