Settled Concrete Is Not a Tearout Problem
Concrete leveling in El Paso raises sunken slabs back to grade by filling the void underneath them. The existing concrete stays in place. The process takes hours, not days, and costs 50 to 70 percent less than ripping everything out and pouring new. For a city where expansive clay makes settling a near-universal issue, that matters.
The soil here shrinks during drought and swells during monsoon season, and it does this year after year. Voids form beneath slabs. Sections drop. Leveling fixes the result without demolition, disposal fees, formwork, or a week of cure time.
How It Works
Drill small access holes through the settled slab, inject material beneath it to fill the void, and lift the concrete back to position. The methods differ in what gets injected.
Mudjacking
Mudjacking pumps a slurry of cement, soil, sand, and water through 1-to-2-inch holes in the sunken slab. The hydraulic pressure fills the void and raises the concrete incrementally until it reaches the target elevation. The slurry is heavy (about 100 pounds per cubic foot), which provides solid support. It works well for driveways and garage floors where fill weight is an advantage.
Polyurethane Foam Injection
Foam injection uses expanding polyurethane that goes in as a liquid and expands to fill voids and lift the slab. The foam weighs roughly 2 to 4 pounds per cubic foot, cures in about 15 minutes, and the injection holes are roughly the diameter of a penny. Foam works well where weight matters: pool decks, raised patios, and situations where loading an already-weak subgrade with heavy slurry could make things worse.
Choosing Between Them
Both achieve the same outcome. Mudjacking is typically less expensive and uses denser fill, suited for driveways, garage floors, and heavy-use areas. Foam is lighter, cures faster, and uses smaller holes, better for pool decks, interior slabs, and weight-sensitive applications.
Neither works on slabs that are badly broken across multiple planes or have corroded reinforcement. In those cases, concrete repair or replacement is more appropriate. Leveling a slab that has already broken into four pieces is a bit like ironing a shirt that is missing buttons.
What Can Be Leveled
- Driveways, where settled panels create uneven transitions and drainage problems
- Sidewalks, where trip hazards create liability exposure
- Patios, where settled sections drain toward the house instead of away
- Garage floors, where settling affects door clearance and creates pooling
- Pool decks, where settled sections create standing water (foam leveling is well suited here)
- Stoops and steps, where settling pulls the entry away from the house
When Leveling Will Not Work
Replacement is the better option when the slab has broken into three or more significantly displaced pieces, when structural cracking extends through the full depth, when the subgrade has eroded too severely to lift against, or when the concrete itself is deteriorated beyond surface repair. An honest assessment identifies whether leveling is viable or whether foundation repair or slab replacement is the next step.
Cost Comparison
A leveling job that costs $800 to $1,500 might replace a tearout-and-repour that would run $2,500 to $5,000 for the same area. The project takes a few hours with minimal disruption, versus several days for replacement. When the slab is structurally sound and has simply settled because the soil moved, there is no practical reason to tear it out.
El Paso Soil and Recurring Settlement
Settling is not a one-time event here. The expansive clay means the subgrade is always in motion, and many property owners deal with settling more than once over the life of a home. Properties on particularly active soil (much of the east side, parts of the Upper Valley, newer developments on uncompacted fill) see more of it than those on stable ground.
Proper drainage around settled areas reduces the severity of future movement. Directing water away from slabs limits the moisture fluctuation that drives clay expansion and contraction, which is the cheapest prevention available.
Request a free leveling assessment to find out if your settled concrete is a candidate.
Frequently Asked Questions
What is the difference between mudjacking and foam leveling?
Mudjacking uses a heavy cement-soil-water slurry. Foam leveling uses expanding polyurethane at roughly 2 to 4 pounds per cubic foot versus 100 for mudjacking. Both lift settled concrete effectively. Mudjacking costs less. Foam cures in minutes, uses smaller holes, and adds less weight. The choice depends on application and site conditions.
How much does concrete leveling cost compared to replacement?
Leveling runs 50 to 70 percent less than removing and replacing the same slab. It also avoids the multi-day timeline and extended cure period that replacement requires.
What surfaces can be leveled?
Driveways, sidewalks, patios, garage floors, pool decks, stoops, and steps, provided the existing slab is structurally intact and in one or two pieces. Badly broken or severely deteriorated slabs are better candidates for replacement.
How long does concrete leveling last?
A leveled slab can perform well for many years, particularly with managed drainage. In El Paso’s active soil, some properties need periodic re-leveling as the subgrade continues to shift. Maintaining consistent moisture levels around slabs helps extend the result.
How quickly can I use the concrete after leveling?
Mudjacking allows foot traffic within a few hours and vehicle traffic within 24 to 48 hours. Foam injection cures in about 15 minutes, and most foam-leveled surfaces are ready for full use the same day.