Uneven or sunken basement floors are more than just a cosmetic issue—they can signal serious problems beneath your home. In Central Illinois, shifting soils, moisture changes, and time can cause concrete basement floors to settle, crack, and become unstable. At Sealtite Insulation & Slabjacking, we specialize in lifting settled basement concrete using advanced polyurethane foam technology—a fast, clean, and long-lasting solution to restore level and stability.
What Causes Basement Floor Settlement?
Concrete basement floors are typically poured directly onto soil. When that soil shifts, compacts unevenly, or washes away, voids can form underneath the slab. Common causes include:
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Soil shrinkage during dry weather
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Erosion due to water leaks or poor drainage
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Improper soil compaction during original construction
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Natural decomposition of organic materials in the soil
These voids leave parts of the slab unsupported, leading to cracking, uneven surfaces, and in some cases, water pooling or structural stress.
The Polyurethane Foam Lifting Solution
Slabjacking with polyurethane foam involves injecting a high-density expanding foam beneath the sunken concrete. As the foam expands, it fills the voids and gently lifts the slab back into place—all with minimal disruption to your home.
Why Polyurethane Foam?
At Sealtite, polyurethane foam is our go-to method for interior slab repair because it offers unmatched performance:
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✅ Non-invasive: Requires only small holes (roughly the size of a nickel) drilled into the floor
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✅ Fast-curing: Foam sets in minutes, allowing for quick project completion
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✅ Moisture-resistant: The foam won’t break down or wash away when exposed to water
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✅ Lightweight but strong: Provides solid support without adding stress to the soil beneath
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✅ Clean finish: Ideal for indoor use, with minimal mess and a seamless patching process
Sealtite’s Indoor Concrete Lifting Process
Every basement project begins with a detailed inspection. Our experienced team uses precise tools to assess the extent of the settlement and map out a plan to lift and stabilize your floor. The foam is carefully injected to raise the slab evenly, and the access holes are patched when complete.
Because the foam expands and sets quickly, there’s minimal downtime and no need to tear out or replace the existing concrete. Most projects can be completed in one day or less.
Why Fix Basement Floor Settlement?
Ignoring a settling floor can lead to further problems, such as:
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Increased cracking or trip hazards
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Water pooling or intrusion
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Damage to nearby walls or doorframes
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Decreased property value
Addressing the issue early with polyurethane foam lifting is a smart, long-term investment in your home’s safety, appearance, and value.
Trust the Local Experts Since 2004
At Sealtite Insulation & Slabjacking, we’ve been helping Central Illinois homeowners protect their homes for over 20 years. Our family-owned team is known for high-quality work, advanced technology, and honest service. When it comes to concrete lifting, polyurethane foam is all we do—and we do it right.
📞 Call Sealtite today at 855-692-3626
🌐 www.sealtiteinsulation.com
Don’t live with a sinking basement floor. Let’s raise it right—with polyurethane foam.