When you notice a sunken driveway or a slanted patio, your first thought is probably dreading the cost of a full concrete replacement. The good news is that replacing damaged concrete is rarely your only option. Concrete repair and leveling can save you 50% to 70% compared to a complete tear-out.
In Oregon, we use two primary methods to lift and level settled concrete: traditional Mudjacking and modern Poly Foam Leveling. Both methods are highly effective at eliminating dangerous trip hazards and restoring your concrete, but they work in very different ways.
Here is how to know which method is the right fit for your home.
What is Mudjacking?
Mudjacking (also known as slabjacking) is the traditional method of concrete lifting. It uses a specialized, earth-based slurry—a mixture of water, soil, sand, and cement—that is pumped beneath the settled slab through hydraulically controlled pressure.
The Pros of Mudjacking:
Massive Support Strength: Mudjacking material provides an incredible 50 to 200 PSI of support strength.
Heavy Lifting: Because of its density and strength, it is highly effective for lifting thick, heavy concrete slabs like commercial loading docks, heavy-duty shop floors, and large driveway panels.
Environmentally Friendly: The material is non-hazardous and earth-based.
The Cons of Mudjacking:
Larger Injection Holes: The process requires drilling holes that are roughly the size of a quarter to pump the thick slurry beneath the slab. (We patch these upon completion).
Added Weight: The slurry is heavy. If the underlying soil is incredibly weak, adding a heavy mudjacking mixture can sometimes compound the original settlement issue.
What is Poly Leveling?
Poly leveling (or polyjacking) is the modern evolution of concrete repair. Instead of an earth-based slurry, this method injects a high-density, two-part polyurethane foam beneath the uneven slab. As the two liquids mix, a chemical reaction causes the foam to rapidly expand, filling hidden voids and gently lifting the concrete back into place.
The Pros of Poly Leveling:
Lightweight Material: Poly foam provides 27 to 70 PSI of support but weighs a fraction of what mudjacking slurry weighs. This makes it perfect for sunken concrete resting on poor, poorly compacted Oregon clay soils.
Smaller Holes: Poly foam only requires injection holes the size of a penny, making the patched holes much less noticeable.
Void Filling: The expanding nature of the foam makes it incredible at seeking out and filling hidden washouts and voids caused by heavy rainwater pooling or poor drainage.
The Cons of Poly Leveling:
Chemical Base: It is a manufactured chemical product rather than a natural earth-based material (though once cured, it is completely inert and safe for the environment).
Not for Every Massive Slab: While incredibly strong, it doesn’t quite match the raw compressive strength of mudjacking for extreme industrial loads.
Head-to-Head: Which Should You Choose?
Choose Poly Leveling If: You are leveling a decorative patio, a pool deck, a walkway, or a standard residential driveway. Because the injection holes are penny-sized, poly foam leaves a much cleaner aesthetic finish. It is also the superior choice if you suspect heavy rain has washed out large, hidden voids beneath your slab, as the expanding foam will stabilize the soil and prevent future sinking.
Choose Mudjacking If: You have a massive, heavy-duty slab, such as a garage floor housing heavy equipment, a commercial space, or an agricultural shop floor. The precision-controlled lifting and superior PSI support make mudjacking the king of heavy loads.
The Bottom Line
Whether your concrete is leaning, sloped, or causing massive puddles of pooling water, the goal isn’t just to lift the slab—it’s to stabilize the ground underneath so the problem doesn’t come back.
Both methods cure rapidly, meaning you can typically drive or walk on your newly leveled concrete the exact same day.
Because every property in the Umpqua Valley and surrounding areas has unique soil and drainage challenges, the best way to choose between mudjacking and poly leveling is to have an expert evaluate it. Schedule a free, on-site inspection with Oregon Concrete Leveling today, and we will help you find the best long-term solution for your property.
