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Case Study: Lifting and Stabilizing a Sunken Concrete Porch in Spanish Fort, AL

Two large planters flank a double door entrance with a black doormat on a concrete porch.

A homeowner in Spanish Fort, AL, was facing an increasingly uneven concrete porch due to soil settlement beneath the slab. Concerned about safety hazards and long-term damage, they turned to AFS Foundation & Waterproofing Specialists. In just one day, the AFS team used PolyRenewal™ to lift and stabilize the porch, restoring both function and curb appeal without the need for full replacement.


The Challenge

  • Sinking concrete porch creating an uneven surface
  • Tripping hazards and aesthetic concerns
  • Long-term structural risks from underlying soil settlement

The Solution

  • SettleStop PolyRenewal™ polyurethane foam injection
  • Void filling and slab lifting in a non-invasive process
  • Optional one-year annual service plan for continued protection

The Impact

  • Porch lifted and stabilized in a single day
  • Safe, level surface restored
  • Long-term performance without concrete demolition

Before Concrete Lifting:

Uneven concrete pavement with a raised edge near a brick wall, showing some debris and dirt on the surface.

Safety Concerns

The homeowner first noticed that their porch had become uneven, with one side clearly sinking. The slanted slab not only created an eyesore but also introduced safety risks and made daily use of the entryway difficult.

Green house with a wooden pergola and porch, brick foundation, and gutter downspout in sunlight.

Underlying Soil Settlement

Upon inspection, the AFS team found that the soil beneath the concrete had shifted and settled—leaving voids that caused the slab to sink. Without correction, the damage could have spread to nearby areas or worsened the slab’s condition.

After Concrete Lifting:

Close-up of hands using a rusty pipe wrench on a metal fixture with an orange marker on concrete.

Fast Foam Injection, Immediate Results

The crew drilled small holes into the sunken sections of the porch and injected lightweight, high-density polyurethane foam through the SettleStop PolyRenewal™ system. As the foam expanded, it filled the empty spaces beneath the slab and gently lifted the porch back into position.

Concrete sidewalk near brick trim shows several white circular stains close to a green and brown building entrance.

Clean, Controlled Concrete Lifting

This method allowed for a precise and minimally invasive repair. The surface was restored without excavation or demolition, and the foam cured quickly—allowing the porch to be used the same day.

Other Reviews for Our Concrete Lifting Near You

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Basement waterproof system installed in 2 days by Earle Gamble's team was done efficiently and professionally. I chose AFS because the bid…

Basement waterproof system installed in 2 days by Earle Gamble's team was done efficiently and professionally. I chose AFS because the bid was competitive with other contractors and they were able to schedule service within 2 days of signing the contract. Jason Camp was able to quickly answer questions on email and delivered on his promises. We are very happy with the results.

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Wade Siler came out Tuesday morning June 23, promptly at 9:00 am, as promised. He thoroughly inspected our front porch concrete lifting…

Wade Siler came out Tuesday morning June 23, promptly at 9:00 am, as promised. He thoroughly inspected our front porch concrete lifting project and presented us with a detailed quote. He was kind and friendly and we enjoyed having him at our home.

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Gregory is the best. Professional, clear communication, helpful in clarifying terms and questions, and transparent when dealing with client….

Gregory is the best. Professional, clear communication, helpful in clarifying terms and questions, and transparent when dealing with client. I recommend for recognition of his skills and abilities. It was truly a pleasure to deal with him. I give my highest recommendation.

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Brandon Owen was our service Tech … He did a very thorough pro job and we highly recommend him.

Brandon Owen was our service Tech … He did a very thorough pro job and we highly recommend him.

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William (Chris) Jamison was very thorough in his inspection today and took the time to answer questions when I had them. He’s a very…

William (Chris) Jamison was very thorough in his inspection today and took the time to answer questions when I had them. He’s a very knowledgeable professional.

Need Concrete Lifting for Your Home?

Groundworks CFI with Customers

If you’re dealing with sunken concrete around your home—whether it’s a porch, sidewalk, or driveway—AFS can help lift and stabilize it with long-lasting results. In Spanish Fort, our team restored this sinking porch in just one day using our proven SettleStop PolyRenewal™ system. If you’re looking for a clean, fast, and permanent alternative to full replacement, we’re here to help you reclaim your space with confidence. Contact AFS today!

Related Resources

Concrete Lifting FAQs

PolyRenewal™ concrete lifting is a lasting solution for uneven, sinking concrete. The eco-friendly polyurethane foam gently lifts slabs, fills gaps, and stabilizes the soil beneath, providing a reliable and lasting solution for your home. 

The costs of concrete lifting vary based on project-specific details like the size of the concrete area and the severity of the damage. PolyRenewal™ injections are cost-effective compared to complete slab replacement or DIY installations. Contact a local professional for a free concrete inspection and estimate.

It’s a no-excavation, fast-installation solution that levels floors efficiently and cost-effectively.