Slab Lifting

If your driveway, patio, walkway, or pool deck is sinking or cracking, The Crack Guys can lift and re-level it without the inconvenience and expense of a full tear-out and concrete repour. Cracked and uneven concrete is more than an eyesore. It creates tripping hazards for your family and allows water to seep in, which causes the damage to spread and worsen over time.

For many of these situations, the right solution is polyjacking with our Poly Rise™ Slab Lifting Technology. This modern approach to concrete lifting outperforms traditional mudjacking in every meaningful category, delivering a cleaner, faster, and longer-lasting result.

What Is Polyjacking?

Polyjacking is a concrete lifting method that uses high-density polyurethane foam to raise and stabilize sunken concrete slabs. When a concrete surface sinks, it is typically because the soil beneath it has shifted, eroded, or developed voids. Polyjacking addresses this directly by injecting expanding foam beneath the slab to fill those voids, lift the concrete back to its original position, and stabilize it against future movement.

The Crack Guys use the Poly Rise™ Slab Lifting Technology system for all polyjacking work. Poly Rise™ is suitable for a wide range of applications, including driveways, sidewalks, patios, porches, stairs, pool decks, garage floors, basement floors, concrete slab foundations, warehouse floors, and more.

The Poly Rise™ Process

The Poly Rise™ installation process is precise, efficient, and minimally disruptive. Our highly-skilled technicians drill small injection ports, approximately 5/8 of an inch in diameter, into the affected slab. High-density polyurethane foam is then injected through these ports beneath the concrete. The foam expands immediately upon injection, filling voids in the soil, lifting the slab back to its original level, and stabilizing it from below. Once the slab is level, the injection ports are filled and the surface is ready for use in as little as 15 to 30 minutes.

Poly Rise™ vs. Mudjacking: Why Modern Polyurethane Wins

When a concrete surface sinks, homeowners have traditionally had two options: mudjacking or polyjacking. While both methods involve injecting material beneath the slab to lift it, the technology and results are very different. Here is how they compare across four key categories.

Weight and Soil Load

Mudjacking uses a heavy slurry of sand, cement, and soil to fill voids and lift the slab. This adds thousands of pounds of additional weight to soil that is already unstable, which can cause the concrete to sink again shortly after the repair. Poly Rise™ uses a lightweight, high-density foam that provides the necessary lifting power without adding significant weight to the underlying soil, protecting the long-term stability of the repair.

Aesthetics and Drill Holes

Mudjacking requires large injection holes of approximately two inches in diameter. Even when patched, these large circles remain clearly visible in the finished surface. Poly Rise™ injection ports are approximately 5/8 of an inch in diameter, roughly the size of a penny. Once filled, these small ports are nearly invisible, preserving the appearance of your concrete.

Cure Time and Convenience

Mudjacking slurry takes 24 to 72 hours to fully cure, meaning driveways and walkways may be off-limits for days after the repair. Poly Rise™ polyurethane expands and hardens almost instantly. In most cases the surface is ready for full use, including vehicle traffic, within 15 to 30 minutes of application.

Durability and Resistance to Washout

Because mudjacking slurry is organic-based, it is susceptible to erosion. Water flowing beneath the slab can wash the material away over time, leading to renewed settling. Poly Rise™ polyurethane is waterproof and chemically inert. It will not wash away, rot, or degrade, providing a permanent solution that also seals the underside of the concrete against future moisture intrusion.

Why Choose Poly Rise™ for Your Concrete Repair?

While mudjacking was the industry standard for decades, it is a temporary fix for a permanent problem. Poly Rise™ offers a cleaner, faster, and more durable result at a cost that is still significantly lower than full concrete replacement. There is no excavation required, no extended cure time, and no added burden on already compromised soil. The Crack Guys use Poly Rise™ because we believe in providing the most effective and long-lasting solution available for sinking and uneven concrete.

If you would like a free estimate for concrete lifting services in Alabama or Tennessee, contact The Crack Guys today. Our experienced consultants serve homeowners and commercial property owners throughout the region, including Huntsville, Birmingham, Montgomery, Nashville, Clarksville, and the surrounding areas.

More Slab Lifting Resources:

• Why DIY Slab Lifting Is A Bad Idea
• Signs You Need Concrete Lifting
• Why Is My Concrete Slab Sinking In The Middle?

Slab Lifting With Poly Rise™: Frequently Asked Questions

What is polyjacking and how does it work?

Polyjacking is a concrete lifting method that uses high-density polyurethane foam to raise and stabilize sunken concrete slabs. When a concrete surface sinks, it is typically because the soil beneath it has shifted, eroded, or developed voids. The Crack Guys inject expanding polyurethane foam beneath the slab through small ports to fill those voids, lift the concrete back to its original position, and stabilize it against future movement. The surface is ready for full use in as little as 15 to 30 minutes after the application is complete.

What is the difference between polyjacking and mudjacking?

Both methods inject material beneath a sunken slab to lift it, but the technology and results are very different. Mudjacking uses a heavy slurry of sand, cement, and soil that adds thousands of pounds of weight to already unstable soil, takes 24 to 72 hours to cure, is susceptible to erosion over time, and requires large two-inch injection holes that remain visible after patching. Poly Rise™ uses lightweight, waterproof polyurethane foam that adds minimal weight, cures in 15 to 30 minutes, will not wash away or degrade, and requires only 5/8-inch injection ports that are nearly invisible once filled. The Crack Guys use Poly Rise™ because it delivers a cleaner, faster, and longer-lasting result.

What types of concrete surfaces can Poly Rise™ lift and level?

Poly Rise™ is suitable for a wide range of applications, including driveways, sidewalks, patios, porches, stairs, pool decks, garage floors, basement floors, concrete slab foundations, warehouse floors, and more. If your concrete surface is sinking, uneven, or cracked due to soil movement or voids beneath the slab, contact The Crack Guys for a free estimate. Our experienced consultants serve homeowners and commercial property owners throughout Alabama and Tennessee.

How long does polyjacking take and when can I use the surface afterward?

The Poly Rise™ process is fast and minimally disruptive. The injection process itself is typically completed in a matter of hours depending on the size of the area being treated. Once the ports are filled and the foam has cured, the surface is ready for full use, including vehicle traffic, in as little as 15 to 30 minutes. This is one of the most significant advantages Poly Rise™ has over mudjacking, which requires 24 to 72 hours of cure time before the surface can be used.

Will the injection holes be visible after polyjacking?

No. Poly Rise™ injection ports are approximately 5/8 of an inch in diameter, roughly the size of a penny. Once filled, these small ports are nearly invisible in the finished surface. This is a significant improvement over mudjacking, which requires holes of approximately two inches in diameter that remain clearly visible even after patching.

Is polyjacking a permanent solution?

Poly Rise™ polyurethane is waterproof and chemically inert. It will not wash away, rot, or degrade over time, making it a long-lasting solution for sinking and uneven concrete. Because the foam also seals the underside of the concrete against future moisture intrusion, it helps protect against the conditions that caused the original settling. While no concrete repair can guarantee against all future soil movement, Poly Rise™ is significantly more durable than mudjacking and far more cost-effective than full concrete replacement.

Why doesn’t The Crack Guys perform mudjacking?

The Crack Guys do not perform mudjacking because we believe in providing the most effective and long-lasting solution available. Mudjacking adds significant weight to already unstable soil, is susceptible to erosion and washout over time, and requires large injection holes that remain visible after repair. Poly Rise™ outperforms mudjacking in every meaningful category, and choosing it means you are investing in a repair that will last rather than a temporary fix that may need to be repeated.

Do you offer free estimates for concrete lifting in Alabama and Tennessee?

Yes. The Crack Guys offer free estimates for concrete lifting and leveling services for homeowners and commercial property owners throughout Alabama and Tennessee, including Huntsville, Birmingham, Montgomery, Nashville, Clarksville, and the surrounding areas. Our experienced consultants will assess your concrete, identify the cause of the problem, and walk you through the most effective solution for your property. There is no obligation to proceed and no cost to you for the estimate. Contact The Crack Guys today to schedule yours.