Uneven garage floors can create ongoing problems for homeowners. Low spots allow water to pool, cracks can spread across the surface, and uneven edges create trip hazards. As the slab settles, it can also affect how the garage door closes or seals, allowing moisture, debris, and critters inside.
Foamjection lifts sunken garage floor slabs back into position without removing or replacing the concrete. Our polyurethane concrete lifting process restores support beneath the slab, improves drainage, and creates a more stable, level garage floor that’s ready for normal use immediately—for a fraction of the cost of replacement.
Garage floors sink when the soil beneath the slab loses support. Common causes include:
Once the support is compromised, garage floors can continue to sink if left unaddressed.
You may need garage floor leveling if you notice:
Early repair helps prevent further settlement and foundation-related issues.
If settlement has spread beyond the garage, driveway leveling or concrete slab leveling may also be recommended to stabilize connected surfaces.
Foamjection levels garage floors by injecting high-density polyurethane foam beneath the slab. The foam expands to fill voids, lift the concrete, and restore firm support below the surface.
Small access holes are drilled
Foam is injected beneath the garage floor
The slab is lifted and stabilized
Holes are patched after lifting
Most garage floor leveling projects are completed in one visit, and many surfaces are ready for use the same day.
Homeowners choose garage floor leveling because it fixes uneven slabs without the cost and disruption of replacement. Lifting restores a level surface, improves drainage, and helps protect nearby walls and foundations.
For garage floors that are intact but uneven, leveling is often the most practical solution.
Garage floors sink due to soil erosion, poor drainage, settling backfill, and heavy vehicle loads.
Yes. Garage floor leveling is often a better option than replacement when the concrete is still structurally sound.
Leveling raises and stabilizes the existing slab instead of tearing it out. This means lower cost, less disruption, and a much faster repair. In most cases, garage floor leveling costs significantly less than replacement, is completed in a single visit, and allows the space to be used immediately the same day.
Replacement is usually only needed when the concrete is severely cracked, broken apart, or failing structurally. For sunken or uneven garage floors, leveling is typically the more practical and cost-effective solution.
Most garage floor leveling projects are completed in just a few hours. The exact time depends on the size of the slab and how much settling has occurred, but the process is much faster than full replacement.
In most cases, the garage floor is ready for use the same day once the work is complete and the area is cleaned.
In many cases, yes. Once the garage floor leveling is complete and the area is cleaned, the surface is often ready for normal use the same day.
The exact timing can depend on the size of the slab and the scope of the repair, but polyurethane foam cures quickly and does not require long waiting periods like concrete replacement.
No. Polyurethane foam is water-resistant and remains stable after curing.
The repair holes are small and discreet. After lifting, they are patched to blend with the surrounding concrete and are far less noticeable than seams or surface changes from full replacement.
While the patches may be visible up close, they do not affect the strength, safety, or use of the concrete and are typically minimal once the area is cleaned.
Yes. Garage floor leveling can help improve water drainage when settling has caused low spots or uneven slopes.
By lifting the concrete back to its proper height and angle, leveling helps water flow away from the garage instead of pooling near doors, walls, or drains. This can reduce moisture issues and help prevent future damage caused by standing water.
Foamjection helps homeowners with expert foam concrete leveling throughout.
Foamjection is the nationwide leader in polyurethane concrete lifting—powered by HMI. Backed by 50+ years of expertise, 20,000+ customers served, and a proven national system, we help homeowners across the U.S. fix sinking concrete using advanced foam injection for long-term stabilization. From uneven walkways and driveways to patios and garage floors, our process delivers reliable concrete repair while helping homeowners save up to 70% compared to replacement.
Looking for a fast, affordable alternative to tearing out concrete?
