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Concrete leveling services by The Real Seal in Lake Forest, Illinois are used to raise and level concrete slabs, sidewalks, patios, and driveways. This technique involves polyjacking, a method in which polyurethane foam is used. The leveling process is non-toxic, fast, as well as long-lasting when compared to other concrete leveling solutions.

Why Does Concrete Settle?

Concrete can settle due to a variety of reasons such as lack of proper drainage, poor compaction, tree roots, and adverse site conditions. The most common cause that causes concrete settlement is rainwater or water from the gutter washing out soil from underneath your driveways or sidewalks. The voids or pockets created as a result can lead it to settle.

Another reason why concrete can settle is the shrinking of clay-rich soil that grows due to varying levels of moisture content. As a result, the ground becomes unstable, causing the concrete to shift and sink even more.

Concrete Leveling Using Polyjacking

The soil underneath a concrete surface must be strong enough to hold its weight. Otherwise, it will not be able to support the concrete structure, making it impossible to keep the slab from sinking. You must remember that if the problem is weak soil, the slab will sink again.

Types of Concrete Leveling



Pool Decks



Concrete Steps


Garage floors

Poly Jacking Process

The polyjacking process includes the following steps:

Sidewalk lifting foam process

Step 1: Dime-sized holes are drilled into sunken concrete surfaces.

Step 2: Polyurethane foam is injected into the holes.

Step 3: The foam beneath the concrete expands and lifts the slab.

Since the polyurethane foam is inorganic, it won’t decompose over time. Consequently, this technique provides a reliable solution for sinking concrete.

The Benefits of Polyjacking​

Quick Action

Just 15 minutes after the foam is injected, you can easily walk over the concrete. It is strong enough to support heavy weights such as vehicular traffic.

Minimally invasive

The process creates the minimum inconveniences for owners as it does not involve any major excavation that may bother them.


The polyjacking foam is lightweight in contrast to other leveling techniques such as mudjacking which use heavy materials, which leads to future soil settlement.


The foam used for polyjacking does not easily react to moisture and does not leak which keeps harmful substances from seeping in.


Owners can easily save up to half of the traditional concrete slab replacement costs if they opt for concrete leveling by polyjacking.


Polyurethane foam is not easily affected by water once it has settled successfully. It is completely waterproof and highly durable.

What Our Customers Are Saying

“Not Everything’s Better When Wet”®