Cracked, sunken concrete sidewalks and walkways aren’t just an eyesore—they’re a safety hazard. Uneven sidewalks can lead to serious injury, and in the worst cases, legal trouble for the property owner. At AquaGuard Concrete Leveling Solutions, we provide home and business owners with sidewalk repair services. With our sidewalk leveling process, we offer a permanent solution that quickly raises slabs back to level.
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Why Do Sidewalks Sink and Crack?
The best sidewalk repair method will always address the root cause of your sidewalk’s damage. So, what typically causes cracked, sinking sidewalks? Sidewalks sink for a number of reasons, but the primary cause typically occurs beneath the concrete slab itself. The soil under the sidewalk or walkway is what supports the slab. When the soil shifts, it leaves voids that are unable to support the weight of the concrete, eventually causing the concrete to sink and settle into the voids. Multiple factors contribute to shifting soil, including Atlanta’s Georgia Red clay soil.
Georgia Red Clay
In Atlanta, the soil supporting our concrete sidewalks is referred to as Georgia Red clay. Georgia Red clay is an expansive soil, meaning it expands when it is wet and shrinks when it is dry. In Georgia, weather changes occur frequently throughout the year, meaning this clay soil is rarely in a stable state. When red clay receives excess rain or runoff from a deep freeze melt, it can wash oversaturate and wash away. During droughts or cold conditions, it can harden and crumble. Whether from dry out or washout, the eroded soil left behind causes voids, leading to your sidewalk cracking and sinking into weak spots.
How to Level an Uneven Concrete Sidewalk
There are several options when it comes to concrete sidewalk leveling, each presenting different pros and cons.
Though mudjacking (also known as slabjacking) is common, it’s a fairly out-of-date solution for sidewalk leveling. Mudjacking is a relatively inexpensive process and involves drilling Coke can-sized holes in the sidewalk and injecting a concrete slurry to gradually fill the voids beneath the slab. The concrete slurry used is very heavy—usually between 100-140 pounds per cubic foot.
Mudjacking is also extremely messy and takes at least a week to cure, meaning the sidewalk cannot be used during that time. Additionally, because the method doesn’t address the true cause of sidewalk sinking (the soil), it requires maintenance every couple of years.
Concrete grinding is another popular choice for sidewalk repair.. Using a power tool, a contractor will grind down the raised portion of the sidewalk to eliminate tripping hazards. Unlike mudjacking, this procedure is purely cosmetic and does not address the voids below the concrete slab that are likely causing the unlevel appearance. Additionally, the “repaired” concrete will be a different color, potentially harming your property’s curb appeal.
Why level your concrete sidewalks with solutions that aren’t permanent? At AquaGuard, we use PolyLevel®, a permanent, structural-grade, high-density polyurethane foam to stabilize and accurately lift your concrete. The foam is installed in minutes and cures in half an hour, dramatically improving the look and safety of your sidewalks in under an hour. It’s minimally invasive (only requiring dime-sized holes every three feet apart), lightweight (4 pounds per cubic foot), and is waterproof (won’t wash out). Furthermore, PolyLevel® is cost-effective, engineer-designed and tested, and offers the best opportunity to lift slabs back to level.
How Does PolyLevel® Work for Concrete Sidewalk Repair?
Unlike mudjacking and concrete grinding, PolyLevel® repairs the problem at the source—the soil. Rather than adding extra weight to the soil supporting your already-heavy concrete, PolyLevel® injects a structural-grade, two-part polymer foam under the concrete. This foam expands to fill voids caused by shifting and sinking soil. The result is a stronger, stable, level concrete sidewalk. This sidewalk repair solution is permanent and durable to ensure your sidewalk is stable for years to come.
Sidewalk Repair Contractors in Atlanta, Rome, Athens, and Marietta
Call Aquaguard Concrete Leveling to schedule an inspection! Our concrete repair contractors will provide a free inspection and cost estimate to help you take steps towards restoring your property’s value and safety.
If you’re looking for concrete sidewalk leveling contractors in Georgia, call Aquaguard Concrete Leveling today! Curious to see examples of how our processes have effectively restored our customer’s concrete? Check out our sidewalk leveling examples!