Concrete Leveling FAQ

Concrete leveling in Lubbock runs $3 to $8 per square foot for mudjacking and $5 to $12 per square foot for polyurethane foam injection, with small single-panel lifts starting around $500. A typical two-car driveway lands between $1,200 and $3,500 and a settled patio between $800 and $2,200. The spread comes down to how far the slab has dropped, how much void has opened underneath, and how many injection ports the lift needs.

Lifting is cheaper, usually by 40 to 70 percent. Replacing a two-car driveway in Lubbock means demolition, haul-off, new base, new forms, new concrete and a week of cure time, which routinely runs three to four times the cost of lifting the slab you already own. Replacement only wins when the concrete itself has failed: spalled through, shattered into more pieces than it has panels, or poured so thin it cannot take injection pressure.

Most Lubbock driveways sink because water washed the fine sand out from under them, not because the concrete failed. The Southern High Plains sits on loamy eolian deposits of the Blackwater Draw Formation over a calcic caliche horizon 30 to 60 inches down. Water that cannot pass the caliche runs sideways, and with 19 inches of annual rain arriving in a handful of intense storms, downspouts and driveway approaches concentrate enough flow to carve a void. The slab spans the void until a vehicle loads it, then it drops.

Most residential lifts are finished in two to five hours, start to finish, in a single visit. Polyurethane foam reaches roughly 90 percent of its strength in about 15 minutes, so the ports get patched and the slab takes vehicle traffic the same day. Mudjacking needs the slurry to set, which typically means staying off the slab for 24 to 72 hours depending on temperature.

You can drive on a foam-lifted slab the same day, usually within the hour. The two-part polyurethane cures by chemical reaction rather than by drying, so ambient temperature barely matters and there is no water to evaporate. Mudjacked slabs need 24 to 72 hours before vehicle loading because the cement slurry has to hydrate and gain strength.

Polyurethane foam injection uses 5/8 inch ports. Mudjacking uses 1 to 2 inch holes because the slurry is far thicker and needs volume to move. Both get patched with a colour-matched compound, but 5/8 inch patches disappear into the surface texture in a way that 2 inch patches never quite do, which matters on a stamped patio or a visible front walk.

A correctly executed lift does not crack a sound slab, because the lift is distributed across many ports rather than forced through one. Cracking happens when a single port is over-pressured, when the port pattern is too sparse for the panel size, or when the slab was already fractured and the lift simply revealed it. Existing cracks will stay visible after the lift, they will not close up, and any honest quote says so before the work starts.

Polyurethane foam lifts typically hold 10 to 15 years, mudjacked lifts 5 to 10 years. The difference is weight. Cured foam weighs 2 to 4 pounds per cubic foot, while a cement and soil slurry weighs 100 to 150 pounds per cubic foot. Mudjacking adds thousands of pounds of new load onto the same subgrade that failed in the first place, which is why the second settlement usually arrives sooner.

Lifting an existing slab in place is a repair and generally does not require a City of Lubbock permit. Replacing a driveway approach, a public sidewalk, or curb and gutter does require a construction permit from the building official, and the contractor has to be registered with the City. Registration requires either $100,000 of general liability coverage or a $20,000 compliance bond. City of Lubbock Building Safety is at 1314 Avenue K and can be reached at 806-775-2087.

No. Texas issues no state general contractor license, no statewide exam and no statewide bond for concrete work. Only electricians, plumbers and HVAC technicians carry state credentials. What matters locally is City of Lubbock contractor registration plus proof of insurance, which is exactly what you should ask any bidder to produce before work starts.

Yes. Polyurethane foam cures through a chemical reaction rather than by drying, so it works through Lubbock's Oct to Apr freeze window and through January lows around 26 degrees. Mudjacking is the method that struggles in cold, because the slurry has to hydrate and can freeze before it gains strength. Winter is also the honest time to lift, because a subgrade that is dry and contracted gives a truer picture of the low point than one that is swollen after a summer storm.

Settlement drops a slab, heave pushes it up. In Lubbock you get both, and the soil under the slab tells you which. On the Amarillo, Acuff and Olton uplands the failure is almost always settlement from washed-out sand over the caliche. On playa rims, where Randall clay sits, the smectitic clay swells when ponded and shrinks when dry, so the same corner can rise one season and fall the next. Lifting a heaving slab without addressing drainage just buys a short reprieve.

Usually not. Standard Texas homeowners policies exclude earth movement, settling and soil expansion, which covers the overwhelming majority of concrete leveling work. The narrow exception is settlement caused by a covered sudden event, such as a plumbing leak under the slab, where some policies will pay for repair of the resulting damage. Read the earth movement exclusion in your own policy before assuming either way.

Yes, as long as the panels are still structurally intact. A slab with one or two clean cracks lifts fine, and the port pattern is simply adjusted so each fragment gets its own support. A slab that has broken into many small pieces, spalled through to the aggregate, or sits on a failing base cannot hold injection pressure, and replacement is the honest answer. A free on-site assessment sorts one case from the other in about 20 minutes.

We cover Lubbock and Lubbock County, plus Wolfforth, Shallowater, Idalou and Slaton, and reach west to Levelland in Hockley County and north to Plainview in Hale County. Lubbock neighborhoods including Tech Terrace, Maxey Park, LakeRidge and Vintage Township are all inside the core service area, and quotes are free anywhere in that footprint.

Concrete leveling is worth it when the slab is structurally sound and only its elevation is wrong, which describes most settled flatwork in Lubbock. You pay a third to a half of replacement cost, the job finishes in hours rather than weeks, and the concrete stays out of landfill. It is not worth it on a slab measuring under four inches, broken into many fragments, or spalled through to the aggregate.

The cheapest lasting way to level a settled garage floor is injection lifting through the existing slab, $2,000 to $4,800 for a typical two-car floor, because it avoids demolition and disposal entirely. Self-levelling compound is cheaper still but it is a surface treatment: it adds weight on top of an unsupported slab without filling the void underneath, so it cracks and the underlying settlement continues.

Removing and replacing a concrete pool deck typically runs $8,000 to $20,000 or more, because the work involves demolition close to the pool shell, careful haul-off, new base preparation, forming around the coping and a decorative finish to match. Lifting the existing deck costs $2,300 to $5,400 for a 450 square foot surround, which is why lifting is almost always assessed first.

Texas homeowners policies generally exclude settlement, earth movement and gradual deterioration, so a sinking driveway is usually not covered. The exception worth pursuing is damage caused by a covered peril, most commonly a sudden under-slab plumbing leak, where the leak repair and some resulting damage may be covered while the levelling may not. Read the earth movement exclusion in your own policy and ask your adjuster directly.

Three honest drawbacks. It does not repair cracks, spalling or surface damage, so a cosmetically poor slab ends up cosmetically poor at the right elevation. It leaves patches, 5/8 inch with foam and 1 to 2 inch with mudjacking. And it does not address the cause of the settlement, so an uncorrected downspout or grade problem will re-open the void whatever was injected.

They are the same thing. Slabjacking, mudjacking and pressure grouting all describe pumping a cement, sand and soil slurry under a slab to fill the void and raise it. The term that actually describes a different method is polyjacking, also called polylevelling or foam injection, which uses expanding polyurethane rather than slurry and behaves very differently on weight, hole size and cure time.

Mudjacking is not a realistic DIY job. It requires a pump capable of sustained pressure, a mixer, a laser level, and enough experience to judge slurry consistency against the void, because mix consistency is the main variable in whether the lift goes where you want it. The common DIY outcomes are a slab cracked by uneven pressure and grout that travelled somewhere unhelpful. Neither is cheap to undo.

Mudjacking lifts typically last 5 to 10 years against 10 to 15 for polyurethane foam. The grout itself is durable, so the limiting factor is weight: a cement slurry adds 100 to 150 pounds per cubic foot to soil that already failed to carry the slab alone. On sound subgrade where the settlement had a one-off cause, mudjacked lifts can last considerably longer than that range.

The slab surface needs to be dry enough to patch cleanly, but the ground does not need to be dry and levelling is not a seasonal service. Polyurethane foam is hydro-insensitive and cures by chemical reaction rather than by drying. What we avoid is working during active saturation, because the subgrade is then at its softest and the elevations you measure are the least representative.

Any time of year works for polyurethane foam lifting, and winter has a genuine advantage: a dry, contracted subgrade shows the slab's true low point rather than a temporarily supported one. Mudjacking is the method with a season, because cement slurry needs above-freezing temperatures to hydrate and Lubbock's freeze window runs October through April with January average lows near 26 degrees.

Yes, a settled sidewalk panel can be lifted back to grade through the existing concrete without removing it, usually in under an hour per panel and from around $500. Ports are drilled, material is injected to fill the void and raise the panel, and the ports are patched flush. The panel needs to be sound and at least four inches thick, which we core-measure rather than assume.

Yes, and injection lifting is the normal approach because replacing a garage floor means demolition inside an enclosed space with the building standing. The slab is lifted relative to the threshold and the walls rather than to open grade, and the work is usually sequenced bay by bay so you keep somewhere to park. A two-car floor runs $2,000 to $4,800.

Patios sink mainly because the soil beneath them was disturbed during construction and never fully consolidated, then water accelerated the process. A patio usually sits over foundation backfill along the house side, which is the loosest soil on the lot, and it frequently receives roof runoff from a downspout at one corner. Those two facts together explain most sunken patios in Lubbock.

Resurfacing a pool deck improves appearance but does not correct elevation, so it is the wrong answer to settlement. A resurfacing product is a thin layer bonded to the existing concrete: if the slab beneath it is unsupported and still moving, the new surface cracks along the same lines. Lift first to correct the elevation and eliminate the void, then resurface if you want the finish improved.

Yes, and settled stoops are common work. A stoop that has dropped usually pulls away from the house and leaves a gap at the threshold, and lifting closes that gap and restores the step height. The check we make first is whether the stoop is a solid poured mass or a concrete shell over fill, because that changes the port plan and the amount of material required.

Yes, and warehouse floors are often better lifting candidates than residential flatwork because they were poured thicker over engineered base. The work is scoped zone by zone so racking aisles, traffic lanes and dock approaches can be sequenced around operations. With polyurethane foam a completed zone takes forklift traffic within about an hour of its last port being patched.

In the City of Lubbock, yes. City ordinance requires a permit from the building official to construct, reconstruct, repair, alter or replace sidewalks or driveways on any public street or alley, and the contractor must be registered with the City carrying either $100,000 in general liability insurance or a $20,000 compliance bond. Lifting an existing slab in place is generally a repair and usually avoids that path. Confirm current requirements with Building Safety at 1314 Avenue K, 806-775-2087.

Texas has no state general contractor licence, no statewide exam and no statewide bond for concrete work. Only electricians, plumbers and HVAC contractors require state credentials. What does exist is municipal registration: a contractor working in the City of Lubbock must register with the City, which requires proof of $100,000 general liability insurance or a $20,000 compliance bond. Ask any contractor to show you that registration and their insurance certificate.

On site, in writing, at no charge. We shoot laser elevations across the slab to establish the actual drop, tap out the extent of the void, core-measure slab thickness at the first port, and identify the water source that caused the settlement. You get the measured drop, an estimated material volume, both methods priced, and a verdict on whether lifting is appropriate at all.

Every lift carries a written workmanship guarantee, and the terms are on the quote before you accept rather than discovered afterward. What the guarantee cannot cover is continued settlement from an uncorrected water source, which is why our written scope always names what we observed, whether or not fixing it is in our scope. A repair that re-opens because a downspout was never extended helps nobody.

No. The written assessment, including laser elevations and our method recommendation, is free and carries no obligation. If the honest answer is that your slab should be replaced rather than lifted, you get that in writing too, at no cost, and we are not the ones who benefit from that conclusion.