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Sinking Concrete Slab

A home’s structural strength is paramount, with the concrete slabs playing a pivotal role in this stability. Though robust, concrete isn’t exempt from wear and tear. A descending concrete slab, be it on your driveway, sidewalk, porch, or inside your residence, isn’t just visually displeasing. It signals potential soil troubles that could jeopardize your home’s foundation. 

Mount Valley, serving homeowners across South Carolina and Western North Carolina, comprehends the challenges you face with sinking concrete slabs. We provide solutions that are both durable and fitting, enhancing your property’s safety and visual appeal. 

Discover the reasons behind sinking concrete slabs, their effects on your dwelling, and the advantages of Mount Valley’s specialized concrete lifting procedures. 

What Is a Sinking Concrete Slab? 

A sinking concrete slab manifests when a concrete surface starts to decline unevenly, often leading to visible depressions or fractures. Such unevenness not only taints your property’s visual charm but also introduces potential safety threats, notably tripping dangers. 

Sinking concrete slabs are common in many concrete structures, including: 

Additionally, you might observe: 

Recognizing and addressing these signs early on can fend off greater damage, minimize risks, and rejuvenate your property’s functionality and aesthetics. That’s why it’s imperative to reach out to local concrete repair specialists like Mount Valley at the first sign of trouble. 

What Causes a Sinking Concrete Slab? 

While there are multiple causes behind a sinking concrete slab, some of the most prevalent include: 

  • Settling Soil: As time progresses, the earth beneath the slab compacts and merges, leading the overlying concrete to descend. 
  • Eroding Soil: Inadequate water drainage, leaks, or soil movement can lead to erosion underneath, compromising the slab’s stability. 
  • Excessive Precipitation: Overabundance of moisture from rains, floods, or snowmelt can upset the slab’s balance. 
  • Poor Drainage: Faulty drainage setups can lead to water accumulation, escalating soil-related issues. 
  • Tree Roots: Growing tree roots can displace soil, causing slab upheaval. Decomposing roots create soil gaps, leading to further sinking. 
  • Freeze-thaw Cycles: The recurrent freeze-thaw cycle strains and jostles the soil beneath slabs. 
  • Installation Errors: Mistakes during the concrete installation process can result in future descent and fracturing. 

Timely addressing of these underlying issues is essential to avoid more serious structural damage. 

Can You Fix a Sinking Concrete Slab? 

Absolutely. Addressing a sinking concrete slab is not just feasible but also essential for the home’s safety. The ideal long-term remedy hinges on correctly identifying and tackling the root cause. 

Mount Valley employs the advanced SettleStop™ PolyRenewal™ system, a cutting-edge polyurethane injection mechanism that elevates sunken concrete slabs. For foundational concerns, we incorporate other techniques, including foundation piers, to offer permanent stabilization. 

For tailored repair solutions, reach out to our team. 

How to Fix a Sinking Concrete Slab 

In using the PolyRenewal™ system to elevate sunken slabs, Mount Valley follows a meticulous method: 

  • Inspect the problematic concrete areas. 
  • Determine the need for PolyRenewal™ or alternative treatments. 
  • Drill small holes into the distressed concrete. 
  • Insert installation ports. 
  • Formulate the specialized closed-cell polyurethane foam. 
  • Inject the foam beneath the slab. 
  • Allow foam to occupy the void and elevate the slab. 
  • Let the foam solidify (typically takes 15 minutes). 
  • Detach injection ports. 
  • Seal and refine the drilled spots. 
  • Seal any cracks to forestall future damage. 
  • Periodic inspections and maintenace to ensure continued protection. 

Mount Valley’s unique products are tailored to tackle specific problems, promising unmatched quality and longevity. 

Why Address a Sinking Concrete Slab Now 

Addressing a sinking concrete slab promptly is crucial for: 

  • Safety: Sunken slabs pose tripping risks, especially to children, elderly, and those with mobility constraints. 
  • Progressive Damage: Without proper intervention, slabs will continue their downward shift. 
  • Structural Threats: Unattended soil issues that cause slab sinking can also harm walls and foundations. 
  • Moisture Complications: Depressed slabs can lead to water accumulation, resulting in moisture damage, mold, and foundational cracks. 
  • Aesthetics & Home Value: Broken and uneven slabs degrade your property’s look and can deter potential buyers. 

For comprehensive solutions, Mount Valley stands out with its top-tier, long-lasting products. 

Contact Mount Valley for Dependable Concrete Lifting Solutions 

Don’t let minor issues evolve into costly repairs. If you spot signs of sinking or unlevel concrete slabs, reach out to Mount Valley. Our seasoned professionals use advanced diagnostics and superior products to ensure optimal results. 

With our PolyRenewal™ foam injection system, we can swiftly elevate settled slabs. We also offer extensive foundation repair services to address any related issues and ensure your home’s long-term protection. Whatever your home demands, Mount Valley provides the best solutions. 


The cost is influenced by the slab’s size, damage severity, and chosen repair method. Mount Valley provides complimentary inspections, transparent pricing, and diverse payment options. Contact us to schedule a free inspection and estimate.

Mount Valley’s PolyRenewal™ process can elevate slabs in roughly 15 minutes. The overall project duration depends on the slab’s dimensions and damage degree. We offer a timeline during our free evaluation.

Indeed, our treatments are crafted to resist a range of weather conditions, ensuring your slab remains sturdy and intact. The PolyRenewal™ foam is designed to provide lasting support, resisting erosion and washout. To discover more, reach out to Mount Valley.

Disclaimer: “Concrete leveling” means the process by which cracked, uneven concrete is stabilized, and in many cases lifted, by means of PolyRenewal™ polyurethane foam. Mount Valley Foundation Services does not guarantee that PolyRenewal™ can make your concrete perfectly level. 

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Asheville Location

53 N Market St, Suite 5
Asheville, NC 28801

Augusta Location

630 Ellis Street, Suite 2-B
Augusta, GA 30901

Charleston Location

1850 Ashley River Rd
Charleston, SC 29407

Columbia Location

2110 Commerce Drive
Cayce, SC 29033

Greenville Location

300 South Ave
Spartanburg, SC 29306

Myrtle Beach Location

1704 N. Oak Street, Suite 3
Myrtle Beach, SC 29577

Savannah Location

6606 Abercorn St., Suite 211
Savannah, GA 31405