Garage floors can settle over time due to shifting soil beneath the concrete slab. When this happens, the floor may become uneven, crack, or drop near the garage door or foundation.
A sunken garage slab can cause several problems, including water drainage issues, structural stress on the slab, and uneven surfaces that make parking or storing equipment difficult.
Northwest Concrete Leveling provides professional garage slab leveling using advanced polyurethane foam injection. This modern repair method lifts and stabilizes sunken concrete quickly without the need for costly replacement.
Most garage slab leveling projects can be completed in just a few hours, and the surface is typically ready for use the same day.




Garage slabs often experience settlement due to soil movement beneath the concrete. Because garages frequently support heavy vehicles, the soil underneath can compress or shift over time.
Common causes include:
When the soil beneath the garage floor loses support, sections of the concrete can sink or crack.
Northwest Concrete Leveling uses a high-density polyurethane foam injection process to lift and stabilize uneven garage floors.
We inspect the garage slab to determine the cause of settlement and identify voids beneath the concrete.
Small holes are drilled into the slab where the foam will be injected.
Structural polyurethane foam is injected beneath the slab where it expands to fill voids and lift the concrete.
The garage floor is carefully raised back to its proper position and stabilized.
Polyurethane foam leveling offers several advantages compared to traditional concrete repair methods:
• Faster installation
• Minimal drilling and disruption
• Lightweight but extremely strong material
• Long-lasting stabilization
• Most garage floors usable the same day
• Significantly cheaper than full slab replacement
For many homeowners, leveling the garage slab is the fastest and most cost-effective solution.
Northwest Concrete Leveling can repair many types of garage slab issues, including:
• Sunken garage floors
• Uneven concrete near garage doors
• Cracked garage slabs caused by settlement
• Garage floors sinking near foundations
• Water pooling on uneven garage floors
• Slabs separating from the driveway
If your garage floor is uneven or sinking, our team can evaluate the issue and recommend the best repair solution.
Polyurethane concrete leveling is designed to provide long-term stabilization. In most cases the repair lasts for many years.
Most garage slab leveling projects are completed within a few hours depending on the size of the area.
Concrete lifted with polyurethane foam is usually ready for vehicle traffic within 15–30 minutes.
Yes. In most cases, leveling costs significantly less than removing and replacing the slab.
Contact Northwest Concrete Leveling today to schedule your free inspection and estimate.
Concrete Leveling & Polyurethane Foam Injection Services in Kennewick, Pasco, Richland, West Richland, and surrounding Tri-Cities communities.
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