Mudjacking in Montgomery, AL

Mudjacking is a traditional method of lifting sunken concrete slabs by pumping a

cement‑based slurry underneath. For decades, it was the only option for homeowners in

Montgomery, Alabama who wanted to level driveways, sidewalks, and patios without full

replacement. While newer methods like polyurethane foam have gained popularity, mudjacking

remains a cost‑effective choice for many projects.

How Mudjacking Works

The mudjacking process begins by drilling 1.5‑ to 2‑inch diameter holes through the sunken

concrete slab. A specialized pump forces a slurry mixture—typically a blend of Portland

cement, local soil or sand, and water—into the voids beneath the slab. The slurry fills any

erosion cavities and hydraulically lifts the slab back to its original elevation. Once the slab is

level, the holes are patched with concrete or a removable plug. The slurry hardens over the

next 24 to 48 hours, providing a new base for the concrete. Montgomery Foundation Repair Co

uses a controlled pumping process to avoid over‑lifting or damaging the slab.

When Mudjacking Is the Best Choice

Mudjacking is ideal for large, flat areas where the slab is structurally sound but has settled

uniformly. Examples include large driveway sections, commercial loading docks, and

warehouse floors. Because the slurry uses inexpensive materials, mudjacking costs

significantly less per square foot than polyurethane foam for very large jobs (over 1,000 square

feet). It also works well for slabs that are already heavy and are not at risk of further settlement.

Montgomery Foundation Repair Co often recommends mudjacking for detached garage floors,

barn floors, and agricultural concrete where appearance is less important than function.

Limitations of Mudjacking in Montgomery’s Clay Soil

Mudjacking has limitations that are especially relevant in Montgomery, AL. The slurry adds

substantial weight—about 100 pounds per cubic foot—which can actually worsen settlement if

the underlying clay is very weak or wet. Additionally, the slurry is rigid once cured, so it may

crack if the clay beneath it swells or shrinks seasonally. Over time, water can wash out the fine

particles in the slurry, causing the slab to settle again. For these reasons, Montgomery

Foundation Repair Co generally recommends polyurethane foam for residential projects where

long‑term stability is a priority. However, for clients on a tight budget, mudjacking can provide

several years of improvement.

Combining Mudjacking with Drainage Improvements

No concrete leveling method will last if water continues to erode the soil beneath the slab.

Before mudjacking, Montgomery Foundation Repair Co checks for the source of erosion. We

may recommend extending downspouts, regrading the area, or installing a French drain.

Without these improvements, the same erosion that caused the original settlement will

eventually undermine the mudjacking repair. We provide a written estimate that includes any

necessary drainage work, so you understand the full scope and cost.

Frequently Asked Questions