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 calls in Cornelius come in two flavors and I get them mixed up if I am not careful on the phone. The first flavor is exterior slab work — driveway sections that have settled at the edge where the fill was never properly compacted, walkways that have tipped toward the house because a downspout was dumping under them for a decade, pool decks around The Peninsula and Peninsula Club homes where lakefront clay expansion has walked the perimeter concrete off level. The second flavor is interior slab work, which is rarer in Cornelius because most of this stock is crawlspace-over-block instead of slab-on-grade, but I see it on the partial-slab-partial-crawl weirdos and on garage floors that were poured on marginal fill. Both call for polyurethane injection, not the old mudjacking rigs that guys in this trade were using in the 1990s. Polyjacking is a cleaner, faster, lighter-weight lift with a smaller drill pattern and it does not add the water weight to already-saturated Cornelius soil that mudjacking used to add.
Last spring I got a call from a homeowner in The Pointe off Torrence Chapel who had a driveway apron section that had settled about an inch and a half at the garage transition. Every time she pulled her SUV in, the front wheels dropped into the settled zone and the underside of the bumper caught on the raised edge of the garage slab. Standard Cornelius story — the driveway was poured in 2001 on fill that was never properly compacted at the garage transition, sixteen years of wet-dry cycling and truck weight had worked the fill down another inch, and the apron slab was floating on nothing. Fixed it in an afternoon with HMI TerraThane 24024 injected through six 5/8-inch drill holes on a grid pattern. Lift was clean, the slab came back level with the garage floor, we patched the drill holes with a matching gray concrete sealant, and she was driving on it the same evening. No demo, no re-pour, no truck of ready-mix in the driveway for two days.
What I have to sort out on every Cornelius concrete lifting call is whether the underlying soil problem is stable enough to hold the lift. Polyjacking is a real fix when the settlement was caused by fill compaction over time and the soil has now reached a stable equilibrium. It is a Band-Aid when the underlying cause is active erosion — a downspout still dumping under the slab, an irrigation zone still saturating the soil, a graded surface still pushing water toward the settlement zone. I will not lift a slab that is going to re-settle within a year because we did not fix the water first. On lakefront Peninsula properties the water source is often obvious once you look at the grade and the gutter runs. On inland Cornelius homes off Bailey Rd or in Antiquity it might take a bit more digging to figure out what has been feeding the fill loss. That diagnosis is part of the free inspection.
The Cornelius concrete lifting process starts with a walkaround, not with the drill. I want to see the whole site — where the driveway meets the garage, where the walkways meet the front stoop, where the pool deck meets the coping, where the settled section sits relative to downspouts and irrigation heads and the natural grade of the lot. On a Peninsula lakefront job I am also looking at the lake-side grade because if the settled slab is on the downhill side of the house, the water source might be sheet flow off the roof valleys during storms rather than a specific downspout. Photograph everything, measure the settlement in inches with a straight edge and a level, and figure out the target lift geometry before we touch any equipment.
Injection pattern on a typical driveway apron section is a 4-foot by 4-foot grid of 5/8-inch drill holes — small enough to patch cleanly with a color-matched sealant afterward, close enough spaced that the poly fills the void uniformly. HMI TerraThane 24024 is the material we run — a two-part polyurethane that expands to fill voids and lifts the slab in a controlled way as we monitor the level. We use a laser level and a helper watching a target line on the slab edge to catch the lift moment. Overshoot is the enemy — you can always add another shot, you cannot un-lift a slab. On pool decks in The Peninsula and Peninsula Club, the injection grid gets denser near the coping to avoid stress cracks in the transition, and we work from the far edge in toward the pool.
Mecklenburg County does not require a permit for polyurethane concrete lifting on residential exterior slabs. Peninsula, Pointe, and Antiquity HOAs do not care about the work either — it is a same-day job with no equipment left on site overnight and no visible change from the street beyond a level slab that used to be settled. The one HOA-adjacent concern is on pool decks in The Peninsula Club where architectural review technically covers the coping and pool surround, but a lift-and-patch operation with matching sealant has never triggered review in my experience. If we are lifting a section that was replaced in a non-original color and the patch is going to stand out, I flag that on the inspection. Same-day turnaround on most jobs — the polyurethane cures in about 15 minutes and the slab is drivable within an hour.
HMI TerraThane 24024 is the polyurethane we spec for every Cornelius lift job. Two-part, closed-cell expanding poly, weighs a fraction of what mudjacking slurry weighs, and cures fast enough that we can be off site the same afternoon on most residential work. Lift capacity per shot is substantial, and the material is inert once cured — no leaching into soil, no interaction with plant roots, no environmental concerns for lakefront properties where anything you inject near the shoreline gets scrutiny. Drill bits are 5/8-inch masonry, patched afterward with a matching gray concrete sealant that blends into the surrounding slab within a couple of weeks of weathering.
Equipment is a gas-powered generator, an air compressor for the pneumatic injection gun, the two-part material tanks with heated hoses, and a laser level with a target rod for controlling lift. Everything fits in a single truck and trailer setup, no big rig blocking Peninsula private streets, no ready-mix truck sitting in a driveway for a day. On lakefront Peninsula jobs where the settled slab is close to the water we take extra care with material handling — the poly is inert once cured but the uncured components should never contact the lake, so we set up drip trays under the injection gun and any equipment that could leak. That is a small thing but it matters on Lake Norman. Older Cornelius stock off Bailey Rd and in Antiquity sometimes has driveway or walkway sections that were poured before modern rebar was standard, and if we are lifting an old slab with no reinforcement I keep the injection pressure lower to avoid cracking the concrete on the lift. That comes with feel more than spec — one reason we do not send guys who are new to the work on Cornelius jobs solo.
Yes — Cornelius is a regular concrete lifting route. Free on-site inspection anywhere in Cornelius, fixed written quote before we touch anything.
Cornelius concrete lifting almost always requires fixing the underlying water source — downspout extensions, regrading, or irrigation adjustments — before the poly injection goes in, or the same slab will re-settle inside 18 months. On lakefront properties this exterior work is often more important than the injection itself.
28031. All Mecklenburg County addresses covered.
It is genuinely better for most residential Cornelius work. Mudjacking pumps a cement-and-soil slurry under the slab that adds significant weight to soil that may already be marginal, requires larger drill holes (2-inch typical) that are hard to patch invisibly, and takes longer to cure. Polyjacking uses a lightweight expanding polyurethane, 5/8-inch drill holes that patch cleanly, cures in about 15 minutes, and does not add moisture to already-saturated Cornelius lakefront clay. There are cases where mudjacking is still the right call — very heavy commercial slabs or specific soil conditions — but on a Peninsula driveway apron or a Pointe pool deck, poly is the answer.
Yes, and it is a common Cornelius job. We work the injection grid from the far edge in toward the pool coping, use denser spacing near the coping to control the lift geometry, and monitor with a laser level to catch the lift moment before we overshoot. The pool structure itself does not move — we are lifting the deck slab that sits on soil around it. As long as the pool is a proper gunite or fiberglass structure with its own footing (which everything in Peninsula Club is), the deck lift has no impact on the pool. I have done this specific job at least a dozen times in Peninsula Club and The Peninsula waterfront.
That is a diagnosis question and it is the core of what we do on the free inspection. If the underlying cause was one-time fill settlement over 15 or 20 years, the soil is now stable and the lift will hold indefinitely. If the underlying cause is active erosion from a downspout, an irrigation zone, or a grading issue that keeps pushing water under the slab, the lift will re-settle inside a year or two unless we fix the water source first. On Cornelius lakefront jobs I frequently recommend the exterior drainage fix before the poly work — sometimes the whole scope is just extending downspouts and regrading, and the slab stabilizes without lifting. Straight answer on the inspection every time.
Usually yes. Garage floor settlement at the door threshold is common on Cornelius stock where the garage slab was poured on fill and the fill has compacted over decades of vehicle weight. We drill through the slab in a grid pattern, inject HMI TerraThane, and lift the settled section back to level with the driveway apron and the door threshold. Same-day job on most residential garages. The one variable is whether the garage slab has rebar or wire mesh reinforcement — if it does not, we work with lower injection pressure to avoid cracking the concrete on the lift.
Free on-site Cornelius inspection. Fixed written quote. Call (980) 227-1769 or book below.