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The Benefits of Concrete Lifting with Polyurethane Foam 

Whether it’s a cracked pool deck or an uneven sidewalk, irregular concrete surfaces can become tripping hazards if not repaired. At Groundworks, our concrete lifting technique includes the use of polyurethane foam, a lightweight and effective solution to lifting your sunken and uneven concrete.  

Let’s look at what concrete lifting with polyurethane foam is, how it works, and its benefits over other concrete lifting methods. 

What is Concrete Lifting with Polyurethane Foam? 

Concrete lifting with polyurethane foam, also known as polyjacking or concrete leveling, is a process used to raise and stabilize sunken or uneven concrete surfaces. This technique is commonly employed for repairing sidewalks, driveways, patios, garage floors, and pool decks.  

How Concrete Lifting Works 

Concrete lifting with polyurethane foam is a modern and effective method used to raise and stabilize sunken or uneven concrete surfaces. At Groundworks, our process of lifting concrete looks like this: 


  • Preparation: The area around the sunken concrete slab is cleared, and any obstacles or debris are removed to provide access to the surface. 
  • Drilling holes: Small holes, about the size of a penny, are strategically drilled into the sunken concrete slab at predetermined locations. These holes allow for the injection of the polyurethane foam. 
  • Injection of polyurethane foam: A two-part polyurethane foam, consisting of a resin and a hardener, is mixed on-site and injected through the drilled holes beneath the concrete slab. The foam starts as a liquid but quickly expands into a lightweight, high-density foam upon contact with air and moisture. 
  • Expansion and lifting: As the polyurethane foam expands, it fills voids and lifts the sunken concrete slab back to its original position. The foam’s expansive force provides controlled and precise lifting, allowing for accurate adjustment of the slab. 
  • Stabilization: In addition to lifting the concrete, the injected polyurethane foam stabilizes the underlying soil. It compacts loose soil and creates a strong, supportive base for the repaired concrete surface, helping to prevent future settlement. 
  • Closure of holes: Once the concrete slab has been lifted and stabilized, the drilled holes are filled to restore the surface’s appearance. Excess foam is trimmed away, and the area is cleaned up. 
  • Immediate use: Polyurethane foam cures rapidly, typically within 20 minutes, allowing for almost immediate use of the repaired surface. This minimizes downtime and disruption to the property. 

Polyurethane foam is lightweight, waterproof, and durable, making it an ideal choice for concrete lifting applications.  

Why We Recommend Polyjacking Over MudJacking 

While mudjacking is another common method to lift concrete, it is heavier and requires more time to set than lightweight polyurethane foam. 

Polyjacking offers several advantages over mudjacking, including: 

  • Lightweight material reduces pressure on underlying soil. 
  • Smaller injection holes result in minimal disruption and a more aesthetically pleasing finish. 
  • Faster cure time allows for quicker turnaround and minimal downtime. 
  • Waterproofing properties provide long-term protection against water infiltration. 
  • Greater precision and control over the lifting process result in more uniform results. 
  • High load-bearing capacity makes it suitable for various applications. 
  • Environmentally friendly and non-toxic once cured. 
  • More durable and long-lasting repairs compared to mudjacking. 

In short, polyurethane foam’s rapid expansion and curing properties, along with its ability to provide long-lasting stabilization, make polyjacking a popular and effective solution for repairing sunken or uneven concrete surfaces in residential, commercial, and industrial settings. 

Contact Groundworks for Effective Concrete Lifting 

For effective concrete lifting solutions, consider contacting Groundworks. Our team of professionals specializes in polyjacking and other concrete repair techniques to address sunken or uneven concrete surfaces. With our expertise and state-of-the-art equipment, we can provide efficient and long-lasting repairs for your residential or commercial property. Reach out to us today to schedule a free inspection

Leah Leitow

Leah Leitow

Content Writer

Leah is a Content Writer for Groundworks with nearly ten years of experience working in the foundation repair industry. Her experience ranges from working with homeowners to find the right solution to training inspectors and staff. In her background as a Michigan journalist, she gained invaluable insight into people's lives throughout our state. Leah lives in metro Detroit with her husband and two sons.