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.
A homeowner off Cox Rd called me a couple months back about her garage slab. The 2003 tract home in the Robinwood HOA had a two-car attached garage where the slab had settled almost an inch and a half at the front corner near the door. She could set a marble down at the back of the garage and watch it roll to the front. The crack ran diagonally from the front corner back toward the interior wall and had been getting slowly worse for two or three years. She had a mudjacking quote from a guy who wanted to pump slurry under it and she wanted a second opinion. Under the garage slab I could see fill dirt through the crack — loose, uncompacted, and dry — and the front footing itself was fine, just the interior slab pour that had lost bearing. That was a textbook polyurethane foam lift job. HMI TerraThane 24024 through 5/8-inch injection ports on a 4-foot grid, lift back to level, seal the crack from above, done in a single day. No slurry, no vibration, no messy cleanup.
Concrete lifting in Gastonia is a real category because so much of the housing stock either sits on old industrial fill dirt west and northwest of Downtown Gastonia and near the FUSE District redevelopment area, or on the settling clay that the 2000s Robinwood HOA and Sunset Lakes tract stock got when the builders graded fast and did not spec proper compaction. On the older stock — the 40s to 70s brick ranches along Franklin Blvd, Union Rd, New Hope Rd, and Ozark Ave — concrete lifting is usually about interior partial-basement slabs, garage slabs, front stoops, and sidewalk approaches where sixty years of freeze-thaw and clay movement have opened joints and pushed edges up or down. On the pre-1930s mill houses near Downtown Gastonia and around the Loray Mill area, concrete lifting is more likely to be a rear stoop or a sidewalk slab because those houses often have no attached garage and the foundation itself is brick pier not slab.
The mistake I see people make in Gastonia is confusing settled concrete with foundation failure. A slab that has settled an inch is a soil compaction issue almost every time — the concrete itself is fine, the pour is fine, the reinforcement is fine, the dirt underneath went missing or compressed. Polyurethane foam lifts it back where it belongs and stabilizes the soil in the same shot. A slab that has cracked and tilted because the perimeter footing itself moved is a different problem and needs a structural engineer, not a foam injection. On the free inspection I read which one you have. If the perimeter footing is stable and only the interior slab has settled, foam. If the footing itself is moving, we stop and get an engineer involved before anybody quotes anything. Free on-site inspection anywhere in Gaston County — Gastonia, Belmont, Mount Holly, Cramerton, Kings Mountain — with a fixed written quote per slab.
The lift process starts with reading the slab honestly. On the free inspection I look at the crack pattern, measure the settlement drop with a level, check the perimeter footing for movement, and probe the surrounding soil where I can. Interior slab settlement with a stable footing is a foam candidate. Perimeter footing movement is not — that needs a structural engineer before anybody injects anything. Once the scope is confirmed, we mark the injection port grid on the surface, usually 4 feet on center or tighter where the settlement is deeper. Ports get drilled with a 5/8-inch masonry bit through the slab. We tape the crack from below where possible so foam does not exude through it during the lift, or plan to seal it from above after.
The foam itself goes in under pressure through a two-part gun. As the two components mix in the port, the reaction generates expansion pressure that fills voids in the soil below the slab and lifts the slab back to its original elevation. On a Robinwood HOA garage slab settlement of an inch and a half, that is typically 15 to 25 pounds of TerraThane material per port depending on the void volume under each grid point. Lift happens in real time — I read a laser level or a string line as the foam reacts and I stop injection at each port when the slab reaches target elevation. Cure time is 15 minutes to structural strength and 24 hours to full cure. The homeowner can park on the garage slab the next day. No slurry, no water, no vibration, no cleanup beyond wiping the ports flush and patching them with matching concrete color.
Sequencing for the Gastonia housing stock varies. On the 2000s Robinwood and Sunset Lakes tract stock the sequence is straightforward — lift the slab, seal any surface cracks with SikaFlex-1a or a color-matched polymer sealant, done. On the 40s to 70s Franklin Blvd and Union Rd ranch stock where a front stoop has settled and the slab is old and brittle, we sometimes skip the lift entirely and recommend removal and repour because a fifty-year-old stoop that is already spalling will crack again from the lift pressure even at low PSI. On the pre-1930s mill houses near Downtown Gastonia we treat every slab as fragile and pre-inspect for hidden cracks and delamination before we drill ports. Gaston County does not permit slab lifting as a standalone trade — no permit required. Structural work triggered by the inspection would be its own permit story.
Material for slab lifting in Gastonia is HMI TerraThane 24024 polyurethane foam, two-part high-density formulation. Not mudjack slurry. Not sand-cement slurry. Slurry is the old-school method — it works, but it adds significant weight to the same soil that just failed to support the slab in the first place, and mudjack ports are 1-1/2 to 2 inches in diameter which leaves visible patches even on textured concrete. Polyurethane foam is lightweight (about 4 pounds per cubic foot cured), the ports are 5/8 inch and patch nearly invisibly, and the cure is fast enough that you can drive on a garage slab the next day. Alternate formulations we spec include TerraThane 27050 for heavier commercial loads and NCFI Terra-Lok 484 as a substitute if TerraThane is on backorder. All are closed-cell hydrophobic foams that will not degrade in the presence of ground moisture and will not react with the soil chemistry we see in Gaston County.
Injection port grid depends on the slab and the settlement. Standard residential garage slabs in the Robinwood HOA and Sunset Lakes 2000s tract stock get a 4-foot grid at the front settlement zone tightening to 2-foot centers directly under the deepest drop. Front stoops on the 40s to 70s Franklin Blvd and Union Rd ranch stock get 3-foot centers because the smaller footprint concentrates the load. Sidewalk approaches on any era get 4-foot centers along the length. Ports are drilled with a Milwaukee 5/8-inch masonry bit into an M18 rotary hammer, sequenced from perimeter to interior so lift progresses evenly. Laser level (Bosch GLL 100-40G) or string line references target elevation for real-time lift monitoring. Post-lift crack sealing uses SikaFlex-1a polyurethane sealant for hairline cracks, Sikadur 32 Hi-Mod LPL epoxy for wider stable cracks, or color-matched polymer patch material for cosmetic finish. Every lift closes with port patching in a matching concrete color so the finished work is not obvious.
Yes — Gastonia is a regular concrete lifting route. Free on-site inspection anywhere in Gastonia, fixed written quote before we touch anything.
Gastonia concrete lifting hits harder on garage slabs and driveway approaches at the 2000s Robinwood HOA and Sunset Lakes tract stock because the builder compaction was rushed on so many of those pours, and on the older Franklin Blvd and Union Rd ranches it is mostly front stoops and sidewalk slabs that freeze-thaw and clay movement have chewed for sixty years.
28052, 28054, 28056. All Gaston County addresses covered.
Almost always liftable if the perimeter footing is stable and only the interior slab has settled. That is the typical Robinwood HOA and Sunset Lakes profile — builder compaction was rushed on the fill under the interior slab pour, the soil compressed over ten to fifteen years, and the slab lost bearing at the front corner or the mid-span. HMI TerraThane 24024 polyurethane foam through 5/8-inch injection ports on a 4-foot grid lifts it back to level in a single day, fills the void in the soil below, and stabilizes the ground. Cure time is 15 minutes to structural strength and 24 hours to full cure — you can park on it the next day. No slurry, no cleanup, no vibration. If the perimeter footing itself is moving, that is a structural engineer's call, not a foam job. I read that on the free inspection.
Honest answer: often replace on the older stoops. A fifty-year-old front stoop on the 40s to 70s Franklin Blvd and Union Rd ranch stock is usually already spalling at the front edge, cracked internally in ways you cannot see, and brittle enough that even the low pressure of a foam lift can open new cracks or expand existing ones. If the stoop is structurally sound and just settled, we lift. If it is already showing surface damage — spalling, exposed aggregate on the tread, cracks that have opened wider than a hairline — the honest recommendation is remove and repour with a properly compacted subgrade underneath so the new stoop lasts another fifty years. I will tell you on the free inspection which one your stoop is.
Yes, and we do them regularly. The industrial-corridor housing stock west and northwest of Downtown Gastonia and near the FUSE District redevelopment area sits on soil that was graded and filled during the mill era and the early 1900s rail work. That fill settles unevenly and often takes garage slabs and sidewalk approaches down with it. Polyurethane foam is actually a better fit for that soil condition than mudjack slurry because the foam expands into every void in the loose fill and stabilizes it structurally, whereas slurry just adds weight to soil that already failed. If the slab settlement is deep enough that we are concerned the fill is still actively settling underneath, we may recommend a preliminary geotechnical read before the lift so we know we are not going to be back in three years for another one. That call happens on the free inspection.
No Gaston County permit for slab lifting as a standalone trade. Vapor barrier, sealed vents, dehumidifier, slab lifting — none of those are permitted. Only structural repair triggered by the inspection would need a permit, and that would be its own scope. For HOA properties in the Robinwood and Sunset Lakes neighborhoods, exterior visible concrete work sometimes goes through architectural review — a driveway approach lift or a front sidewalk lift may need a courtesy notification even though the finished appearance matches the original. We handle the HOA notification as part of the scope. Interior garage slab lifts and rear stoop lifts do not typically trigger HOA review because they are not visible from the street or common areas.
Free on-site Gastonia inspection. Fixed written quote. Call (980) 227-1769 or book below.