How Polyurethane Foam Injections Level Concrete
One of the advantages of living in the Sunshine State is that you can enjoy time outside year-round. However, if your concrete driveway, sidewalk, or walkway slabs are cracking, sinking, uneven, and unsightly, enjoying your yard can be difficult.
Polyurethane foam injections are a cutting-edge concrete leveling solution to remedy this problem.
In this article, we’ll discuss how foam injections work and the benefits versus older lifting methods.

Sources of Concrete Problems
Your concrete cracks sinks for many reasons, most of which are environmental. The varied soil throughout Florida does little to help. Common factors include:
- Soil Washout
- Shrinking Soil
- Poor Installation
With these factors at work, you’ll start to notice concrete slabs around your property cracking and sinking. Sunken concrete sidewalks, driveways, pool decks, or patio slabs not only pose a serious tripping hazard, but they also steal value from your home and can damage your vehicle.
These issues will only get worse with time. So, it’s best to act quickly when considering a repair. When looking for a repair company, be sure they have knowledge of the local soil and a proven track record of lasting repairs.
What Are Polyurethane Foam Injections?

One way to correct concrete problems is with polyurethane foam injections. Polyurethane foam is a two-part polymer that combines and cures beneath your concrete slab to lift and level damaged structures.
After heating to a precise temperature, the hardening and rising agents combine to expand for about 15 seconds before hardening. Skilled installers must act quickly to direct the foam properly and get a precise lift.
How Foam Injections Lift and Level Concrete
The process of installing polyurethane foam injections is rather straightforward, however, the skill involved in executing the process is much less simple.
Determining the proper amount of product and precise placement takes great skill and knowledge of the local soil.
Below are the steps local experts would take to lift your sunken concrete:

- Small holes (about the size of a penny) are drilled into the concrete

- Ports are inserted

- The two-part polymer is injected into the ports where it mixes and expands

- Ports are removed; holes are filled and smoothed
With a cure time of just 30 minutes, homeowners can get back to their daily activities without interruption.
Benefits Over Mudjacking
Mudjacking is a traditionally used method of lifting concrete using a slurry of cement, sand, and mud injected beneath the slab to achieve lift. However, this technique has significant drawbacks. Let’s compare mudjacking with polyurethane injections, highlighting why the latter is the better choice for repair:
Mudjacking:
Large Drill Holes (1-2 inches)
Injected Material is Heavy & Can Cause Compaction
Susceptible to Erosion
Long Cure Times
Polyurethane Injection:
Penny-sized Drill Holes
Lightweight Injection Material Strengthens Soil
Waterproof & Won’t Washout
Cures in 30 Minutes
Trust Alpha Foundations for Reliable Concrete Leveling
Polyurethane injections are by far the most reliable concrete lifting and leveling method available. That’s why our team at Alpha Foundations uses it to repair a variety of concrete structures throughout Florida. Homeowners count on our proprietary PolyRenewal™ system for their concrete repair needs.
You can experience the excellence and lasting results of PolyRenewal™ too. Contact us today to schedule a free inspection and obtain a no-obligation repair estimate. Rid your property of unsafe and unsightly concrete with help from our trusted, experienced team and a state-of-the-art repair solution.
FAQs
Not all foam jacking is equal. Alpha Foundation offers a 5-year warranty on foam jacking jobs.
No. Canned spray foam is commonly used to seal cracks. The success of this is debatable, but its ability to lift heavy concrete slabs is not.
Foam jacking exceeds mud jacking since it not only leaves a cleaner-looking injection site but also provides a much longer-lasting solution with a quicker cure time.
Mud jacking does nothing to address the root cause of the sunken concrete, and adding additional weight to the failing soil beneath the slab, it can make the problem worse.
*Disclaimer: “Concrete leveling” means the process by which cracked, uneven concrete is stabilized, and in many cases lifted, by means of PolyRenewal™ polyurethane foam. Alpha Foundations does not guarantee that PolyRenewal™ can make your concrete perfectly level.
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