Sunken driveways, tripping sidewalks, tilted patios, and settled garage slabs — lifted back to level with high-density polyurethane foam or traditional mudjacking. Cures in 15 minutes. Drive on it the same day.
A licensed local crew — usually out in 24 to 72 hours. Written scope, fixed price, no pressure.
Concrete lifting in Stallings is mostly a driveway and sidewalk conversation, and mostly a soil-moisture-cycling conversation underneath. Union County sits on the same expansive Piedmont clay Mecklenburg does, but Stallings lots along the Old Monroe Rd and Idlewild Rd corridors are flatter, which changes how the water moves through the soil under a slab. Instead of sheeting sideways downhill the way it does under a South Charlotte lot, water on a flat Stallings lot sits under the driveway edge, cycles wet and dry with the seasons, and slowly voids out the subgrade until a section drops. Two decades of that and you get the classic tripping-hazard 1-inch step at the driveway apron, or a sunken sidewalk panel outside the front door, or a garage-floor slab that pitches toward the man door instead of the overhead.
Last fall I ran a concrete-lifting job on a 2001 house in Chestnut off Old Monroe Rd. Owner had a two-panel section of front sidewalk that had settled about 1-1/4 inches on the pier side, so every time someone walked out to the mailbox they were catching their toe on the raised edge of the panel closer to the driveway. He had also noticed the garage floor slab was tipping toward the interior man door — puddle water from a wet-tire day was flowing away from the overhead drain instead of toward it. I probed the subgrade through the sidewalk crack with a soil probe and hit a two-inch void under the low panel. Classic Stallings flat-lot signature: downspout on that corner of the house was dumping four feet from the foundation for probably fifteen years, water was migrating under the sidewalk subgrade, and the fine soil fraction had washed out over time.
The fix for that house was polyurethane foam injection through 5/8-inch ports set on a grid pattern, HMI TerraThane 24024 material pumped in until the panel came back to grade, ports patched, done in one afternoon. But before we lifted anything I made him extend the downspout to 10 feet from the foundation. Otherwise we lift the sidewalk today and the exact same void reforms in five years. That is the Stallings concrete-lifting conversation in one paragraph — drainage first, lift second, or you are just buying a temporary fix.
What follows is what actually gets lifted under Stallings houses and driveways, what the mudjacking guys are still trying to sell you that we do not do, and how the flat Union County lot geometry changes the sequence. Free on-site inspection with a moisture probe on the subgrade, a laser level shot to measure the actual settlement, and a fixed written scope. No prices in here — those come after the inspection.
Concrete lifting in Stallings starts with a laser level shot across the whole slab and a soil probe test through the nearest crack or joint to see what is actually going on under the subgrade. I am measuring how much the panel has dropped relative to the adjacent panels, mapping the direction of pitch, and probing to find the void — depth, footprint, and whether the soil beneath is saturated, dry, or cycling. That five minutes of diagnostic tells me whether polyurethane foam is the right call (which it almost always is in Union County), whether we need to address a water source before we lift, and whether the slab is actually liftable or whether it is spalled and cracked to the point where replacement makes more sense.
On any Stallings job where the settlement is next to a downspout, a foundation wall, or a low-lying lot corner, I walk the exterior before I mix any foam. If a downspout is dumping within six feet of the settled slab, that downspout gets extended before we lift — 4-inch smooth PVC to 10 feet minimum, buried in a shallow trench and daylighted where the yard slopes. If the grade is running toward the slab from an adjacent lawn area, a small regrade with topsoil tapered away from the slab happens first. The lift is the last step. Skip this and you are voiding out the same subgrade again inside five years.
Injection pattern on a typical settled panel: 5/8-inch ports drilled through the slab on a grid, usually 3 to 4 feet apart depending on panel size and void geometry. HMI TerraThane 24024 or NCFI Terra-Lok polyurethane injected in controlled shots, panel monitored with a laser level during injection to lift incrementally in quarter-inch increments. Once the panel is back to grade the foam sets in about 15 minutes and the panel is walkable in an hour, driveable in an hour on a residential driveway. Ports get patched with matching concrete color and the seam is barely visible after a couple weeks of weather.
Garage floor slabs are their own case. Stallings 90s and 2000s tract garages were typically 4-inch slabs poured on 4 inches of compacted crush-and-run over undisturbed subgrade, with the low point supposedly draining to a garage floor drain or to the overhead door threshold. On a house where the front foundation drainage was weak, the interior slab often settles toward the interior man door and creates a puddle problem that never dries because the AC is not conditioning the garage. Lift sequence there is the same: fix any exterior water source first, then injection ports on a grid across the low quadrant, foam-lift back to correct pitch, patch the ports.
What we do not do: mudjacking. Slurry-based mudjacking with a Portland-cement-and-sand mix is a 1970s technology that we tear out and replace with polyurethane. Mudjacking holes are 2-inch diameter and impossible to hide, the slurry adds weight to already-compromised subgrade, and the material breaks down over time and voids out again. Polyurethane foam is a fraction of the weight, injects through a 5/8-inch port that is nearly invisible after patching, cures hydrophobic so it does not degrade from moisture, and lasts decades. If a contractor is quoting you mudjacking on a Stallings driveway or sidewalk in 2026, get a second opinion.
Polyurethane material is HMI TerraThane 24024 as the default, NCFI Terra-Lok as the alternate depending on supplier availability. Both are two-component structural polyurethane foams that expand 20 to 30 times their liquid volume, cure in about 15 minutes, and reach load-bearing strength within an hour. TerraThane 24024 specifically is a 4-pound density foam rated to 7,200 pounds per square foot compressive strength — more than enough for residential slabs including driveways with pickup truck loading. Not the low-density spray foam some contractors will try to substitute — that is void-fill grade, not lift grade.
Injection ports are 5/8-inch diameter drilled through the slab on a grid pattern, 3 to 4 feet apart, spacing tighter over larger void footprints. Port sleeves are brass or plastic tapered to seat the injection gun. After injection and cure the ports get patched with a color-matched concrete repair mortar — Sika QuickPatch or equivalent — and the patched seam disappears with a few weeks of weathering. On an aged 90s Emerald Lake driveway with existing efflorescence and staining, patches disappear almost immediately.
Exterior drainage repair before lifting uses 4-inch smooth PVC downspout extensions to 10 feet minimum, buried in a 6-inch trench and daylighted where the yard slopes. On a flat Old Monroe Rd corridor lot where the yard does not slope enough to daylight, we use a pop-up emitter at the discharge end so the water breaks the surface and runs off rather than pooling. Topsoil regrading uses screened topsoil, not fill dirt, tapered 2 percent minimum away from the slab for the first six feet and blended into existing grade beyond that.
Sidewalk and driveway apron lifting on Stallings houses runs the same specs whether we are working in Emerald Lake, Ashe Plantation, Chestnut, or a random Idlewild Rd custom. The foam does not care what neighborhood you are in. What varies is the water-source triage on the exterior — flatter lots on the Old Monroe Rd corridor push more grading and downspout work than the older Ashe Plantation streets that have a little more natural grade drop.
Garage floor slabs get the same TerraThane foam and 5/8-inch port pattern, injected through the slab from above. On a 1995 to 2010 Stallings tract garage the slab is typically 4 inches thick over 4 inches of crush-and-run subgrade, and lift response is predictable — panel comes back to grade in 30 to 45 minutes of incremental injection with laser monitoring. Structural pier lifting under a foundation wall is a different scope entirely — deep injection through steel casing to bedrock or engineered depth, not what we do on a typical Stallings slab lift.
Yes — Stallings is a regular concrete lifting route. Free on-site inspection anywhere in Stallings, fixed written quote before we touch anything.
Concrete lifting in Stallings is more often paired with a mandatory downspout or grading fix than in tighter-graded Matthews or Mint Hill because flat Old Monroe Rd corridor lots void out subgrade under slabs from repeated wet-dry cycling, and lifting without addressing the water source just resets the clock on the same failure.
28104, 28079. All Union County addresses covered.
Yes, in almost every case. Foam lifting through 5/8-inch injection ports on a grid pattern brings the panel back to grade in an afternoon, and the ports patch nearly invisibly. Only reason we would recommend replacement instead of lifting is if the slab is spalled to the point where the aggregate is exposed across large sections, or if there are multiple cracks with more than a half inch of vertical displacement that suggest the underlying subgrade is completely gone. On a typical Emerald Lake, Ashe Plantation, or Chestnut driveway apron with a clean 1 to 2 inch settlement and no major cracking, lifting is the right call and takes about half a day.
Because the void under your settled sidewalk was created by water washing out the fine soil fraction from the subgrade over years, and if the water source is still active after we lift, the same void will reform inside five to eight years. Extending the downspout to 10 feet from the foundation costs a small fraction of the lift and it protects the work we do. If we lift without addressing the water and it settles again in year six, that is on me and I would have to come back and redo it. If we lift after fixing the water and it settles again in year six, that is a genuinely unusual subgrade problem and we would investigate. The drainage fix is not upsell — it is the difference between a permanent repair and a temporary one.
Mudjacking looks cheaper on the invoice but it costs you more over time in three ways. First, the 2-inch mudjacking holes never patch invisibly and they are visible for the life of the slab. Second, cement-and-sand slurry weighs about 100 pounds per cubic foot, which loads the already-compromised subgrade with more weight and can accelerate re-settlement. Third, mudjacking slurry breaks down over 10 to 15 years from moisture cycling, so the void reforms and the panel settles again. Polyurethane foam patches through 5/8-inch ports that disappear with weathering, weighs about 4 pounds per cubic foot, and is hydrophobic so it does not degrade from moisture cycling. In Union County soil conditions polyurethane is the right material every time — nobody who does slab lifting seriously in this metro is still recommending mudjacking in 2026.
None of the Stallings HOAs — Chestnut, Emerald Lake, Ashe Plantation — touch driveway or sidewalk repair as long as we are not changing the footprint or the material. Foam lifting through injection ports and patching the ports color-matched leaves the slab visually the same as it was before the work, just level again. If your original driveway was stamped concrete or exposed aggregate, the port patches will be a bit more visible right after work and blend in with a few weeks of weathering. Full replacement with new material or a new color would potentially trigger architectural review depending on the HOA, but lifting is invisible work and never has.
Free on-site Stallings inspection. Fixed written quote. Call (980) 227-1769 or book below.