What Causes Concrete to Lift? Identify & Fix Uneven Slabs

Uneven concrete plaguing your driveway, sidewalk, or patio? Before you resort to costly replacement, consider the innovative solution of polyjacking. This minimally invasive technique utilizes expanding polyurethane foam to lift and level sunken slabs, offering a multitude of advantages over traditional methods.

From its swift and efficient application to its long-lasting results and minimal disruption, polyjacking stands out as a practical and cost-effective solution for restoring your concrete to pristine condition.

So, let us explore the advantages and benefits of polyjacking.

Table of Contents:

Understanding Polyjacking

You might wonder, “Actually, what is polyjacking?” Polyjacking, also known as polyurethane foam injection, offers a cutting-edge solution for lifting and leveling sunken slabs. This minimally invasive technique revolutionizes foundation repair, particularly for residential and commercial buildings.

Imagine your driveway or sidewalk restored to its original level, without messy tear-ups or disruptions. Polyjacking achieves this by strategically injecting high-density foam beneath the slabs. This innovative technique deserves a closer look, so let’s explore its unique process and materials.

Polyjacking Process Explained

Before any lifting happens, licensed foundation contractors conduct a thorough inspection. This assessment identifies the extent of the issue and pinpoints the areas requiring attention.

  1. Initial Inspection: A comprehensive evaluation of the foundation and concrete slabs is key to determine the best course of action.
  2. Precise Injection: Once the assessment is complete, the specialized polyjacking process begins. High-density polyurethane foam, renowned for its expansive capabilities, is injected beneath the sunken slabs.
  3. Controlled Lift: As the foam fills voids and gaps, it gently expands, steadily lifting the concrete back to its original level.
  4. Precise Monitoring: Throughout the process, experienced professionals carefully monitor the pressure and volume of the injected foam to ensure a controlled and even lift.

Materials Used in Polyjacking

Polyurethane foam, the star of the Polyjacking process, is a polymer-based material known for its durability and stability. This foam is not only capable of lifting heavy concrete slabs but also provides a lasting solution by stabilizing the underlying soil. The chemical composition of polyurethane foam ensures resistance to water and other environmental factors, making it an ideal choice for foundation repair.

The selection of high-quality polyurethane foam is important in the success of Polyjacking. Reputable Polyjacking services prioritize the use of top-tier materials to ensure the longevity of the repair and the stability of the structure.

Advantages of Polyjacking Over Traditional Methods

Minimal Disruption

Unlike traditional methods that may require extensive excavation and replacement, Polyjacking involves small, strategically placed injection holes, reducing the impact on landscaping and structures.


Polyjacking is often significantly more affordable than traditional methods, potentially saving you up to 50% due to its efficient application and minimal material usage.

Faster Turnaround

The fast-curing polyurethane foam allows for completion in just hours or days, compared to weeks or even months with traditional methods. This enables homeowners and businesses to resume their normal activities sooner.

Benefits of Polyjacking

Beyond fixing uneven concrete, Polyjacking offers a wealth of benefits that make it the preferred choice for homeowners and contractors alike. Here’s why:

Long-Lasting Stability

Unlike temporary fixes, Polyjacking addresses the root cause of the problem. The expansive foam fills voids beneath slabs, stabilizing the soil and preventing future settlement. Think of it as a permanent underlay for your foundation, eliminating concerns about erosion or shifting soil.


Polyjacking isn’t limited to just driveways. Its adaptability extends to sidewalks, patios, pool decks, warehouse floors, and even commercial buildings. No matter the uneven surface, Polyjacking has the solution.

Eco-Friendly Approach

Polyurethane foam, the primary material used in Polyjacking, is environmentally friendly. Its chemical composition ensures resistance to water and other environmental factors, contributing to a sustainable approach in foundation repair. Choosing Polyjacking aligns with the global shift towards eco-friendly construction practices.

Precision and Accuracy

Forget uneven lifts and guesswork. Polyjacking’s controlled injection process uses pressure gauges and precise volume measurements, ensuring targeted lifting and leveling for a uniform, perfect finish. No more over-correction or unnecessary disruptions.

Prevention of Further Damage

Don’t wait for cracks and leaks to appear. Polyjacking proactively safeguards your structure by addressing foundation issues promptly. This preventative measure saves you from costly repairs down the line and protects your investment.

Increased Property Value

A stable and well-maintained foundation positively impacts the overall value of a property. Polyjacking not only restores functionality but also enhances curb appeal, making your property more attractive to potential buyers or tenants. Think of it as an investment that pays off.

Peace of Mind

Opting for Polyjacking provides homeowners and property managers with peace of mind. Knowing that foundation issues are addressed efficiently, cost-effectively, and with a focus on long-term stability allows individuals to confidently invest in the longevity of their property.


Polyjacking isn’t just a quick fix, it’s a commitment to long-lasting stability and enhanced beauty for your property. Imagine strolling across a perfectly level driveway, knowing your foundation is secured for years to come. Polyjacking offers that peace of mind, along with a host of benefits like minimal disruption, cost-effectiveness, and eco-friendliness.

If you’re ready to elevate your property and experience the transformative power of Polyjacking, reach out to Ener-Spray. Our dedicated professionals will guide you every step of the way, ensuring a smooth and successful project.

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