Mudjacking in Lubbock, TX
Mudjacking costs $3 to $8 per square foot, the cheaper of the two lifting methods. This page covers the jobs where it is the right answer and the larger number of jobs where it is not.
Mudjacking lifts a settled concrete slab by pumping a cement, sand and soil slurry through 1 to 2 inch holes until hydraulic pressure raises the concrete, and in Lubbock it costs $3 to $8 per square foot. It is the older of the two lifting methods and still the cheapest way to raise a slab. On a thick slab over sound subgrade it is a perfectly good repair.
It is a legitimate method. For most residential slabs in Lubbock, though, polyurethane foam is the better buy on their particular slab, and the reason is specific to what the soil here does rather than a general preference for the newer product.
Why mudjacking struggles on Lubbock subgrades
A cement slurry weighs 100 to 150 pounds per cubic foot. Lifting a 400 square foot driveway two inches takes about 67 cubic feet of material, which means roughly 6,600 pounds of new permanent load going onto the exact soil that just demonstrated it could not carry the slab by itself. Polyurethane doing the same job adds about 200 pounds.
That is why mudjacked lifts average 5 to 10 years and foam lifts 10 to 15. It is not a quality difference between contractors, it is arithmetic. Where the settlement had a one-off cause that has been fixed, such as a trench backfill that consolidated once and is now stable, the extra weight is survivable and the cheaper method makes sense. Where the cause is ongoing, adding three tons shortens the clock.
What the soil under a Lubbock slab is made of
Most of Lubbock sits on Amarillo fine sandy loam and Acuff loam, developed in the loamy eolian sediments of the Blackwater Draw Formation. These are well drained soils, moderately permeable, with a calcic caliche horizon typically 30 to 60 inches down. Water infiltrates readily, reaches the cemented layer, and moves laterally, carrying fine particles with it.
What that leaves under a slab is a coarse sand skeleton with open voids between grains. Slurry fills the cavity but it does not consolidate that skeleton, it sits on top of it as a heavy new mass. Expanding foam does consolidate it, because the injection pressure pushes outward into the loose material before the slab moves.
On the playa margins where the soil is Randall clay, a very-fine smectitic clay that ponds for long periods, neither method stops the clay from swelling. Those lots need drainage addressed as part of the scope regardless of which lifting method you choose, and that belongs in the assessment.
How a mudjacking lift is executed
Three to six hours on typical residential flatwork, then 24 to 72 hours of cure before the slab takes vehicle load.
- 1
Measure the slab and confirm the method
Laser elevations establish the drop, and the first port is cored to confirm slab thickness. If the concrete is under four inches, badly cracked, or decorative, foam is the better quote. Mudjacking is recommended only where the slab and subgrade genuinely suit it.
- 2
Drill the 1 to 2 inch port pattern
Ports are drilled on a grid sized to the panel, usually every four to six feet. Placement targets joint lines and low-visibility areas because these patches will be visible. On a driveway, ports run along the failure axis rather than in a uniform grid so pressure can be sequenced.
- 3
Mix the slurry to the void
Cement, sand and soil are mixed to a consistency chosen for the cavity. A large open washout takes a looser mix that travels; a tight partial void takes a stiffer one that builds pressure locally. Mix consistency is the single biggest variable in whether a mudjacking lift goes where you want it.
- 4
Fill the void before lifting
The first stage is pure filling. Slurry is pumped until it stops taking material freely, which means the cavity is full and pressure has started to build against the underside of the slab. Nothing should move during this stage, and a slab that starts rising early usually means the void was smaller than assessed.
- 5
Raise in increments, port to port
Pressure is transferred from port to port in small steps, with the laser read continuously. The crew moves around the slab rather than lifting one corner to target, because a slab raised unevenly is a slab that cracks. The target is the original elevation, not the maximum the pump can deliver.
- 6
Patch, cure and return to service
Ports are packed and finished flush with a colour-matched mortar. The slab then needs 24 to 72 hours before vehicle load while the grout hydrates. Finished elevations should be re-shot and walked with you, with a written return date for full loading.
Mudjacking cost in Lubbock
Mudjacking is priced at $3 to $8 per square foot in Lubbock, roughly 40 percent below the $5 to $12 range for polyurethane foam. The spread inside that range is driven by void volume and access. A driveway where the truck can park at the apron and run short hose costs less to lift than a back patio reached through a side gate, even at identical square footage.
| Slab | Size | Typical cost | Back in service |
|---|---|---|---|
| Sidewalk panel | 25 sq ft | $300 to $500 | 24 hours |
| Front walk | 120 sq ft | $500 to $1,000 | 24 hours |
| Driveway approach | 200 sq ft | $700 to $1,600 | 48 hours |
| Two-car driveway | 500 sq ft | $1,500 to $4,000 | 48 to 72 hours |
| Patio | 250 sq ft | $750 to $2,000 | 24 to 48 hours |
| Shop or warehouse bay | 1,000 sq ft | $3,000 to $8,000 | 48 to 72 hours |
Prices assume sound concrete of at least four inches and reasonable equipment access. A slab measured under four inches at the first core, or with multiple through cracks, is quoted as replacement rather than lifting.
On a 500 square foot driveway, mudjacking might save you $1,200 against foam today. If the mudjacked lift needs redoing in year seven and the foam lift is still holding at year twelve, the saving is gone and you have paid two mobilisation fees instead of one. Ask for both numbers on the same quote so the comparison is yours to make.
When mudjacking is the right call
There are four situations where slurry is the right recommendation rather than the fallback. Thick industrial and commercial slabs over engineered fill, where six inches or more of concrete sits on compacted base and the added grout weight is immaterial next to the design load the slab already carries. Large agricultural and shop floors in Levelland and the surrounding county, where the per-square-foot saving compounds across thousands of feet.
Void filling with no lift required, where the job is to eliminate a cavity under a sound slab and grout is a fine material for that. And slabs where the settlement had a single identified cause that has already been corrected, such as a consolidated utility trench or a repaired plumbing leak, so the subgrade is not going to keep moving under the new load.
When not to mudjack
Decorative, stamped or stained concrete, because the 2 inch patches are permanent and visible. Slabs under four inches thick, measured at the core rather than assumed. Slabs with multiple through cracks, where pressure control matters more than material cost. Pool decks and interior floors, where the weight and the cure time both work against you. And any job scheduled between October and April, when Lubbock's freeze window makes slurry cure unreliable.
Mudjacking against foam, side by side
Cost per square foot: $3 to $8 for slurry, $5 to $12 for foam. Hole diameter: 1 to 2 inch against 5/8 inch. Weight added per cubic foot: 100 to 150 pounds against 2 to 4. Cure before load: 24 to 72 hours against about 15 minutes. Expected service life: 5 to 10 years against 10 to 15. Cold weather performance: unreliable against unaffected.
Five of those six lines favour foam and one favours slurry, but the one that favours slurry is the line most people lead with. The full comparison, including how to decide which side of it your slab falls on, is on the mudjacking vs polyjacking page.
Permits and what lifting avoids
Lifting an existing slab in place is a repair and generally does not require a City of Lubbock permit, which is one of the underrated advantages of either method over replacement. Tearing out and repouring a driveway approach or a public sidewalk does require a permit through Building Safety at 1314 Avenue K, and the work must be done by a contractor registered with the City carrying either $100,000 in liability coverage or a $20,000 bond. City minimums for driveways and sidewalks are four inches of concrete. Confirm current requirements with Building Safety on 806-775-2087 before any replacement work starts.
Mudjacking questions
How much does mudjacking cost in Lubbock?
Mudjacking costs $3 to $8 per square foot in Lubbock, which works out to roughly $300 to $500 for a single sidewalk panel and $1,500 to $4,000 for a two-car driveway. It is the cheaper of the two lifting methods on paper, running about 40 percent below polyurethane foam per square foot. Whether it is cheaper over ten years depends entirely on what the subgrade under your slab is doing.
What is mudjacking, exactly?
Mudjacking is a slab-lifting method that pumps a slurry of cement, sand and soil through 1 to 2 inch holes drilled in the concrete until hydraulic pressure raises the slab to the target elevation. It is also called slabjacking or pressure grouting. The slurry fills the void and hardens in place, so the repair is a new mass of grout carrying the slab rather than a compacted soil column.
How long does mudjacking last?
Mudjacking lifts typically last 5 to 10 years, against 10 to 15 for polyurethane foam. The limiting factor is rarely the grout itself, which is durable. It is the added load: a cement slurry weighs 100 to 150 pounds per cubic foot, so a normal residential lift adds thousands of pounds to soil that already failed to carry the slab alone. Where the subgrade is sound and the settlement had a one-off cause, mudjacked lifts can last considerably longer.
Is mudjacking or foam better?
Foam is better on most Lubbock residential work and mudjacking is better on a narrow set of jobs. Foam wins on weight, hole size, cure time and service life. Mudjacking wins on price per square foot and on thick industrial slabs over engineered fill, where added weight is not a concern and the material cost saving is real across thousands of square feet. On a washed-out sandy subgrade under a house driveway, foam is the sounder call.
How big are mudjacking holes?
Mudjacking requires 1 to 2 inch holes, against 5/8 inch for polyurethane foam injection. The slurry is an aggregate mix, so the port has to be wide enough for it to pass without bridging. The practical consequence is visible patches: a 2 inch grey dot in a broomed or stamped surface stays visible from standing height for the life of the slab, which is why mudjacking is rarely recommended on decorative concrete.
How long before I can drive on a mudjacked driveway?
Plan on 24 to 72 hours before a mudjacked driveway takes vehicle load, because the slurry has to hydrate and gain strength like any cement product. Foam, by contrast, reaches roughly 90 percent strength in about 15 minutes. If you have a single driveway and nowhere else to park, that gap is a genuine cost and worth weighing against the lower per-square-foot price.
Does mudjacking work in winter?
Mudjacking is unreliable in Lubbock winters. A cement slurry cures by hydration, so it needs above-freezing temperatures to gain strength and can be damaged if it freezes early. With January average lows around 26 degrees and a freeze window from October through April, winter mudjacking needs either a warm-weather window or protection measures. Polyurethane cures by chemical reaction and is unaffected, which is why most cold-season lifts are done with foam.
Can mudjacking fix a cracked slab?
Mudjacking can lift a cracked slab if the fragments are still large and sound, but it does not repair the cracks. The larger concern with slurry on a cracked slab is control: pressure concentrates rather than distributing, and a fragment can be pushed unevenly or cracked further. Where a slab already has multiple cracks the usual recommendation is either foam, which allows finer control through more ports, or replacement.
Does mudjacking damage my concrete?
Properly executed mudjacking does not damage sound concrete, but it carries more risk than foam on thin or weak slabs. The 2 inch hole removes more material, the slurry pressure is applied at fewer points, and the weight of the grout column is permanent. On a 4 inch residential sidewalk or a thin patio, those factors add up. Slab thickness should be core-measured at the first port before committing to a method.
Get a mudjacking quote
Tell us the slab, the size and how far it has dropped. Ask for mudjacking and foam on the same sheet, with the cost, the cure time and the expected service life of each, so you can pick on the numbers.
- Free written scope with a measured lift plan, not a verbal number
- Polyurethane foam on 5/8 inch holes, patched and colour matched
- Drive on the slab the same day, usually within the hour
- Ask for proof of insurance and any guarantee terms in writing