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Uneven Concrete2026-10-23T11:35:20-05:00

Uneven Concrete: Sidewalk, Driveway & Patio Repair in Tampa Bay, Orlando, Miami and Largo, FL

If a section of your sidewalk has dropped, your driveway has stopped sitting level, or your patio has developed a slope, the slab itself may not be the problem. Often, the soil below it has settled, shifted or eroded away, and the slab becomes uneven as a result. That can create trip hazards, drainage problems and continued settlement over time. If the slab is still in good condition, professional concrete lifting can often bring it back without the cost and disruption of replacement.

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Symptoms

Signs Your Concrete Needs Repair

Uneven concrete doesn't usually appear overnight. The first thing you notice might be a small lip between two sidewalk slabs, a section of driveway that has settled or water collecting where the surface once drained properly. When soil movement continues, those changes often become more noticeable. Recognizing the warning signs early often means repairing the existing concrete before the problem becomes more severe.

Misaligned sidewalk slabs
Raised or sunken driveway sections
Sloped or uneven patios
Pooling water after rain
Widening or cracked joints
Gaps between adjoining slabs
Trip hazards

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Causes

Why Does Concrete Become Uneven?

Concrete rarely becomes uneven simply because of age. It relies on stable, well-compacted soil beneath it. When that soil settles, erodes, expands, contracts or wasn't properly compacted during construction, the slab can lose its support and begin to move. Understanding why the concrete moved is the first step toward choosing the right repair solution.

  • Soil Settling

    Soil can compress over time, especially where fill soil was used beneath the concrete during construction. As the soil settles, the concrete sitting on it can drop.

    This usually happens unevenly. Part of a slab may have plenty of support while another section settles into softer or more compacted soil. That’s why you may see a sidewalk, driveway or patio sink in just one area.

  • Improper Soil Compaction

    Before concrete is poured, the soil beneath it needs to be properly prepared and compacted. If that step wasn’t done thoroughly, the soil can compress later beneath the weight of the concrete.

    The slab may look perfectly fine when it is first installed, then gradually settle as the ground beneath it changes.

  • Water Washing Out Soil

    Water can find its way beneath concrete and carry soil with it. Given enough time, that can leave empty spaces beneath the slab.

    When part of the concrete is no longer fully supported, it can settle into the space below. Drainage problems, runoff and water working through cracks or joints all contribute to this type of erosion.

  • Inadequate Drainage

    Water needs somewhere to go. If drainage around a driveway, sidewalk or patio isn’t working properly, water can pool around or beneath the concrete instead of flowing away.

    With time, excess moisture can soften the supporting soil, create unstable conditions beneath the slab and lead to settlement. It can also add to the risk of erosion and freeze-thaw damage.

Why Ignoring Uneven Concrete Costs You

  • Minor Settlement Turns into a Safety Hazard

    Uneven concrete usually starts with a small lip between slabs or a slight slope that’s easy to overlook. As that height difference grows, it can create trip hazards across sidewalks, walkways, patios and driveways.

  • Water and Soil Problems Get Worse

    When concrete continues to settle, drainage patterns change. Water can collect in low spots or seep beneath the slab, washing away more soil and adding to seasonal freeze-thaw movement. Without stable support beneath it, the concrete is likely to continue shifting.

  • Small Repairs Can Turn into Bigger Projects

    What starts as a section of uneven concrete can become a larger repair if settlement continues. Tackling the problem early often makes it possible to lift and level the existing slab, whereas waiting may lead to more movement, more extensive repairs or the need for replacement if the concrete becomes too damaged.

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LRE Foundation Repair's Repair Solution for Uneven Concrete

Uneven concrete is often repaired by rebuilding the support beneath the slab rather than replacing the concrete itself. Through proven concrete repair solutions, LRE Foundation Repair lifts settled slabs, stabilizes the supporting soil and helps protect the concrete from future water intrusion. The result is a safer, more level sidewalk, driveway, patio or other concrete surface with long-lasting performance and minimal disruption.

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  • PolyLevel® Concrete Lifting

    PolyLevel® injects expanding polyurethane foam to fill voids beneath uneven concrete, stabilize the supporting soil and lift settled slabs with precision. The repair is minimally invasive, cures fast and is often ready for normal use the same day.

  • NexusPro® Joint & Crack Sealant

    After concrete is lifted, sealing the joints and cracks helps protect the repair from water intrusion. NexusPro® is a flexible, UV-resistant sealant designed to stop water from washing away the supporting soil beneath sidewalks, driveways, patios and other concrete surfaces, helping lower the risk of future settlement.

How It Works

Our Concrete Leveling Process

Step 1

Free Inspection & Personalized Plan

Inspection & Tailored Plan|Free Inspection & Personalized Plan}

Every project begins with a thorough inspection of the concrete and the supporting soil. We’ll identify what’s driving the settlement, explain your repair options and recommend the best solution for your property.

Step 2

Targeted Foam Injection

Small, penny-sized holes are drilled into the affected concrete, so PolyLevel® polyurethane foam can be injected beneath the slab without removing the existing concrete.

Step 3

Fill Voids & Restore Soil Support

The expanding foam works into empty spaces beneath the slab and restores the support the concrete has lost, helping stabilize the underlying soil.

Step 4

Lift & Level the Slab

As the foam expands, it carefully raises the settled concrete back toward its original position, leaving a safer, more level surface.

Step 5

Quick Cure & Ready to Use

PolyLevel® cures quickly, letting most sidewalks, driveways, patios and other concrete surfaces be used again the same day.

Benefits

Why Homeowners Rely On LRE Foundation Repair

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What To Expect

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An expert will inspect the problem area and surrounding conditions, including soil movement, drainage, structural integrity, and any related concerns.

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We’ll walk you through what we’re seeing in easy-to-understand language so you know the root cause of the issue, not just the symptoms.

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Customer Information

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Don't just take our word for it

See what our customers have to say about our work.

When David from High Springs noticed the floors of his historic home starting to sag, he knew it was time to call LRE. 🏠 Our team at LRE Foundation Repair installed the SmartJack System — a durable, adjustable support solution designed to lift, level, and permanently stabilize crawl space floor joists.

Here’s why homeowners trust LRE’s SmartJack system: ✅ Galvanized steel supports that resist corrosion and won’t settle over time ✅ Restores uneven floors to their proper level ✅ Provides permanent stabilization for long-term protection Now, David’s home is stronger, safer, and ready to stand the test of time. Watch to see how LRE helped preserve the integrity of his historic home — and hear what David had to say about his experience!

David V. | High Springs, FL

Norbert’s driveway, walkway, and front porch in Gainesville, FL had settled over time, creating uneven surfaces and serious tripping hazards that had even caused previous injuries. After contacting LRE Foundation Repair, our team lifted and leveled the slabs with PolyLevel and sealed the cracks with NexusPro for long-lasting protection. Norbert was very pleased with the results and our team’s professionalism.

We’re grateful he shared his experience and helped other homeowners learn about reliable, long-term concrete repair solutions

Norbert M. | Gainesville, FL

When Toby bought his new home in Beverly Hills, Florida, he noticed water pooling along the side of his driveway and in front of his garage, caused by the slope directing water toward the house. Our team at LRE designed and installed a custom exterior drainage system to fix the problem for good. We added an enhanced channel drain in front of the garage, connected it to an underground drainage pipe, and tied in the home’s downspouts to safely redirect water away from the foundation.

Now, Toby’s property stays dry and protected — and he couldn’t be happier with the results!

Toby A. | Beverly Hills, FL

Scott and Carrie from Belleview were preparing to sell their home, but noticed that the cracks in their concrete pool deck were discouraging potential buyers. That’s when they reached out to us at LRE for help.

After our Customer Care team scheduled an appointment with one of our expert Design Specialists, we inspected the pool deck and developed a repair plan using our Two-Part Concrete Protection System — combining PolyLevel to lift and level the slabs, and NexusPro to seal the cracks and prevent future damage.

Scott and Carrie were thrilled with the transformation and the professionalism of our team — and they’re excited to share their wonderful experience! 🎥 Watch their story and see how LRE helped restore their pool deck and peace of mind!

Scott & Carrie D. | Belleview, FL

Christine and Scott in Leesburg, FL, noticed significant settlement inside and outside their home, with large cracks in their walls and tile flooring. Seeking a permanent solution, they turned to LRE Foundation Repair. Our team installed helical piers, interior slab piers, and PolyLevel to fully stabilize their home. Now, they have peace of mind knowing their home’s foundation is finally permanently secure.

Christine & Scott R. | Leesburg, FL

After noticing exterior wall cracks and doors that wouldn’t close properly, Mary knew her home needed help. Previous repairs had failed, leaving her without a lasting solution or a company to stand behind the work. In this testimonial, Mary shares how LRE Foundation Repair permanently stabilized her home and restored her peace of mind with proven solutions, lifetime transferable warranties, and double-backed warranty protection.

Mary Anne S. | Brooksville, FL

When Frank in Spring Hill, FL, noticed cracks in his walls, he turned to LRE Foundation Repair. Our Design Specialist confirmed foundation settlement and designed a plan using helical piers and a new exterior drainage system to stabilize the home and redirect water. With the repairs complete, Frank was thrilled with the results. Watch the video to see how LRE restored his home and peace of mind.

Frank N. | Spring Hill, FL

Patrick from New Port Richey noticed water entering through his home’s slab foundation during last year’s hurricanes and contacted LRE Foundation Repair for help. Our team installed a custom exterior drainage system, including a French drain to collect and redirect rainwater to a relief drain away from the home. We also connected his downspouts directly into the subsurface system to stop water from pooling near the foundation. The result? A dry, protected home — and one very happy homeowner.

🙌 Watch as Patrick shares his experience and see how LRE Foundation Repair helped protect his home from future flooding! 🌧️🏠

Patrick G. | New Port Richey, FL

When Terry purchased his new home in Tarpon Springs, his home inspector discovered a serious issue — the floor joists were being supported by makeshift car jacks! 😬 Looking for a long-term solution, Terry reached out to LRE Foundation Repair. Our team installed the SmartJack® System, providing strong, durable, and permanent support for the home’s floors.

Terry was so impressed with the results that he shared his incredible experience with us! 🙌 🎥 Watch his story to see how we helped restore lasting stability and peace of mind.

Terry C. | Tarpon Springs, FL

When Carin and Jon from Tampa, Florida, noticed buckling in the wood floors of their 1950s historic home, they suspected something was wrong beneath the surface. That’s when they called us at LRE Foundation Repair for a complimentary crawl space inspection. In this customer testimonial, hear directly from Carin and Jon as they share their experience—from the first inspection to the final results. Our expert Design Specialist identified major moisture issues in their crawl space, and our team got to work installing the CleanSpace™ Crawl Space Encapsulation System to create a dry, healthy environment under their home. Watch their story to see how we helped protect their home for years to come!

Carin & Jon B. | Tampa, FL

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Before & after photos

Check out before and after photos from some of our completed projects.

  • Concrete driveway repair in San Antonio, FL

    The LRE team utilized our PolyLevel Solution to not only bring the concrete slabs back to an even, safe level but also fill the void underneath and permanently stabilize the driveway.

  • Channel drain solution in Seminole, FL

    The LRE team installed a 4″ channel drain within the pool deck’s concrete to collect rainwater and divert it away from the home through a subsurface drainage system.

  • Crawl space repair in Dunedin, FL

    To repair sagging floor issues, LRE used SmartJacks, made from galvanized steel, and our Crawlspace Encapsulation System to control moisture, air flow, and stabilize the structure.

View All Before & Afters

Proudly Serving Florida

LRE Foundation Repair is the local expert for Foundation repair and concrete repair and more. We proudly service Orlando and all of Florida.

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Frequently Asked Questions

Can every uneven slab be lifted? 2026-10-02T11:33:44-05:00

Not every slab is a good candidate for lifting. Concrete that is severely cracked, crumbling or structurally damaged may need replacement. During an inspection, a specialist evaluates both the slab and the soil beneath it to determine whether lifting makes sense. 

Why does only part of a concrete slab sink? 2026-10-02T11:33:17-05:00

Concrete often settles unevenly because the soil conditions can differ beneath the same slab. One area may remain supported while another loses soil through settlement, erosion or poor compaction, so only part of the sidewalk, driveway or patio sinks. 

How long do concrete lifting repairs last? 2026-10-02T11:32:48-05:00

Polyurethane foam lifting is designed as a long-term repair because it fills voids and rebuilds support beneath the slab. How long it lasts also depends on drainage, future soil movement and the condition of the concrete. Correcting water issues around the repaired area can help protect the supporting soil from additional erosion. 

Will uneven concrete continue to get worse? 2026-10-02T11:32:22-05:00

Often, yes. If the soil beneath the concrete continues to settle, erode or change with moisture, the slab may continue to move. Water is particularly worth keeping an eye on. If it is working beneath the concrete, it can continue eroding the soil and open up larger voids beneath the slab. Drainage and soil conditions are worth considering when determining whether the problem is likely to progress. 

How much does uneven concrete repair cost? 2026-10-02T11:31:53-05:00

The cost depends on the size of the affected area, how much the concrete has settled, the condition of the slab and the repair method needed. That’s why there isn’t a single price for uneven concrete repair. A specialist can evaluate the concrete and the soil conditions and provide pricing based on the work your property actually needs. If the existing concrete can be lifted, the cost is often lower than removing the old concrete and installing a completely new slab. 

Is uneven concrete a safety risk? 2026-10-02T11:31:21-05:00

Uneven concrete can become a trip hazard, especially on sidewalks, walkways, patios and steps. A raised edge doesn’t need to be particularly large to catch someone’s foot. It can also create accessibility concerns and potential liability issues around high-traffic areas of the property. If the concrete has noticeably shifted, it’s worth having the area evaluated to understand whether the movement is likely to continue. 

Can uneven concrete be fixed without replacing it? 2026-10-02T11:30:42-05:00

Yes. Uneven concrete can often be leveled without replacement if the slab is still structurally sound. Polyurethane foam lifting fills the voids beneath the concrete, restores support and raises the settled section back toward level. That can be a more cost-effective and less disruptive option than replacing the whole section. Replacement can be necessary when the concrete is severely cracked, damaged or otherwise unsuitable for lifting. An inspection can help determine which approach makes sense. 

What causes concrete to become uneven? 2026-10-02T11:30:09-05:00

Uneven concrete is most often caused by changes in the soil beneath the slab. Soil can settle or compact, water can wash soil away, and moisture changes can cause some soils to expand and contract. Freeze-thaw cycles can also contribute to movement. Poor soil compaction, drainage issues, heavy vehicle traffic and, in some cases, tree roots can also play a role. The concrete itself is usually still in usable condition, the problem is that it has lost some of the support it originally had underneath it. 

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