Weak soil, underground voids, erosion, and washed-out base materials can cause concrete slabs, pads, walkways, and other surfaces to settle. These conditions may create uneven concrete, unstable areas, drainage concerns, and continued movement around your property.
Tar Heel provides professional polyurethane foam injection in Fort Mill, SC, including Concrete Lifting and Leveling, Soil Densification, Soil Stabilization, Void Filling, Sinkhole Filling, Concrete Pad Washout Repair, and Underground Void Stabilization.
Concerned about foundation cracks, settling, uneven floors, crawl space moisture, or other structural problems? Tar Heel Foundation Solutions provides professional foundation repair, crawl space repair, moisture mitigation, and concrete leveling services to help protect your home and restore its stability. Our experienced team will inspect your property, identify the cause of the problem, and recommend a practical solution tailored to your needs. Contact us today to schedule your free inspection and estimate.
Sunken concrete, hollow areas, recurring settlement, washed-out soil, or unexplained depressions may indicate unsupported slabs or underground voids.
Tar Heel evaluates the concrete, soil, drainage, void locations, settlement patterns, and surrounding structures before recommending treatment. Our goal is to improve support beneath the affected area and reduce continued movement.
Concrete surfaces depend on stable soil and consistent base support. When water, erosion, poor compaction, or changing ground conditions remove that support, slabs may crack, sink, or separate.
Polyurethane foam injection uses an expanding material to fill voids, stabilize loose soil, and improve support beneath suitable concrete and ground areas.
Tar Heel provides solutions based on the affected surface, void size, soil condition, drainage, access, structural load, and long-term support requirements.



Underground support problems are not always visible from the surface. A small concrete depression may indicate a larger void, while recurring settlement may result from erosion or weak soil.
Tar Heel provides polyurethane foam injection in Fort Mill, SC for unstable slabs, loose soil, washouts, sinkholes, unsupported concrete pads, and underground voids. We evaluate the complete affected area before recommending treatment.

Concrete may sink when supporting soil settles, erodes, or washes away. Polyurethane foam can be injected beneath suitable slabs to fill voids and raise settled sections.
Tar Heel provides Concrete Lifting and Leveling in Fort Mill, SC for driveways, sidewalks, patios, garage floors, pool decks, porches, and other concrete surfaces affected by settlement.

Loose or poorly compacted soil may not provide dependable support beneath concrete, foundations, pads, or other structures.
Tar Heel provides Soil Densification in Fort Mill, SC by injecting polyurethane material into targeted soil areas. The expanding foam can help compact loose material, fill small spaces, and improve support around the treatment zone.

Soil may become unstable because of erosion, water movement, poor compaction, changing moisture levels, or underground disturbances.
Tar Heel provides Soil Stabilization in Fort Mill, SC using polyurethane foam injection where conditions are suitable. Treatment locations are selected according to soil behavior, affected structures, access, drainage, and stabilization requirements.

Voids may form beneath concrete and soil because of erosion, plumbing leaks, poor backfilling, soil settlement, or washed-out base material.
Tar Heel provides Void Filling in Fort Mill, SC to fill unsupported spaces and restore contact beneath suitable slabs, pads, and surrounding ground areas.

Small sinkholes and soil depressions may develop when underground material washes away, settles, or collapses into an existing void.
Tar Heel provides Sinkhole Filling in Fort Mill, SC after evaluating the visible depression, surrounding soil, drainage, utilities, and possible underground cause. Polyurethane foam may be used for suitable localized conditions.

Concrete pads supporting HVAC equipment, utility systems, steps, sheds, or other structures may lose support when runoff or drainage washes away the soil beneath them.
Tar Heel provides Concrete Pad Washout Repair in Fort Mill, SC by filling affected voids, improving support, and addressing conditions contributing to movement.

Underground voids can develop beneath driveways, sidewalks, patios, slabs, foundations, and landscaped areas. These spaces may remain hidden until settlement becomes visible.
Tar Heel provides Underground Void Stabilization in Fort Mill, SC using targeted polyurethane injection to fill accessible voids and improve surrounding support.
Soil and void problems often develop gradually. Minor settlement, a hollow slab, or a small depression may worsen as erosion and water movement continue. Early evaluation can reduce the risk of more extensive movement.

Polyurethane foam can fill unsupported areas beneath suitable concrete and improve contact between the slab and underlying base.
Treating voids and unstable soil may reduce movement caused by poor support, erosion, or loose material.
Concrete lifting can raise settled sections and improve transitions between slabs, steps, walkways, and attached surfaces.
Targeted injection can reach underground spaces that may not be accessible through traditional excavation methods.
Polyurethane foam injection typically uses small access points and may require less disruption than removing and replacing concrete.
Lifting low concrete sections may help improve surface drainage when settlement has caused water to collect or flow toward structures.
Maintaining stable concrete and soil supports your property’s appearance, function, safety, marketability, and long-term condition.
Every property differs in soil type, drainage, concrete thickness, structural loads, previous repairs, erosion patterns, and access.
Tar Heel evaluates settlement, cracks, elevation changes, voids, soil conditions, water movement, and surrounding structures before recommending polyurethane foam injection in Fort Mill, SC.


Poor compaction, erosion, water movement, and underground voids can cause concrete surfaces to settle below surrounding areas.
Concrete may sound hollow when soil or base material has washed away, leaving unsupported space beneath the slab.
Weak, disturbed, or poorly compacted soil may allow concrete pads, walkways, and other surfaces to move.
Runoff, drainage problems, plumbing leaks, and groundwater can carry soil away and create hidden voids.
Localized ground depressions may indicate soil loss, collapse, or an underground space requiring evaluation.
Concrete may continue sinking when previous repairs address the surface but do not correct weak soil or hidden voids.

Tell Tar Heel about sunken concrete, hollow areas, soil depressions, washouts, recurring settlement, or other concerns.
Our team visits your Fort Mill, SC property and inspects the affected concrete, soil, and surrounding areas.


We review settlement, elevation changes, cracks, drainage, soil behavior, visible washouts, and possible underground voids.
We determine whether erosion, poor compaction, water movement, soil loss, underground spaces, or another condition caused the problem.


You receive a clear explanation of our findings and the recommended polyurethane foam injection solution.
We confirm the treatment area, injection locations, materials, access needs, surface protection, and project expectations.


Our team injects polyurethane foam into the approved areas to fill voids, improve soil support, or lift suitable concrete.
We review the treated areas, confirm completion, seal access points, and discuss monitoring or maintenance recommendations.

Tar Heel provides polyurethane foam injection throughout Fort Mill, SC and nearby communities across South Carolina and North Carolina. Service areas include Rock Hill, Fort Mill, Tega Cay, Lake Wylie, York, Clover, Gastonia, Mount Holly, Belmont, Bessemer City, Cherryville, Dallas, Cramerton, Stanley, Lowell, Ranlo, Charlotte, Huntersville, Cornelius, Matthews, Mint Hill, Davidson, Pineville, Monroe, Indian Trail, Waxhaw, Stallings, Weddington, Wesley Chapel, Marvin, and surrounding locations.
Our team provides Concrete Lifting and Leveling, Soil Densification, Soil Stabilization, Void Filling, Sinkhole Filling, Concrete Pad Washout Repair, and Underground Void Stabilization throughout the greater Fort Mill region.

Tar Heel provides Concrete Lifting and Leveling, Soil Densification, Soil Stabilization, Void Filling, Sinkhole Filling, Concrete Pad Washout Repair, and Underground Void Stabilization.
Polyurethane foam injection places expanding material beneath concrete or into soil to fill voids, improve support, stabilize loose areas, or lift suitable slabs.
Voids may result from erosion, poor compaction, plumbing leaks, drainage problems, soil settlement, washouts, or decaying underground materials.
Yes. Suitable concrete slabs may be raised by injecting expanding foam beneath the surface to fill voids and restore support.
Polyurethane foam may help densify and stabilize suitable soil conditions. The area must be evaluated before treatment is recommended.
It often requires smaller access points and less surface removal than complete concrete replacement or traditional excavation.
Yes. Tar Heel provides polyurethane foam injection in Fort Mill, SC and surrounding communities. Contact our team to confirm availability.

Posted on Google Andy Irvin08/07/2026Trustindex verifies that the original source of the review is Google. They did a great job on my vapor barrier! I would refer them to anyone! Great job team!Posted on Google Morgan Sharp20/05/2026Trustindex verifies that the original source of the review is Google. Tar Heel Foundation Solutions showed up right on schedule and tackled the crawl space repair with impressive precision, installing helical piers that feel like a solid foundation for years to come. They also carefully repointed the brickwork, making each notch neat and sturdy, which definitely earned my stamp of approval—I’d recommend them without hesitation for anyone needing reliable, well-crafted foundation work.Posted on Google JAMI Mullis06/05/2026Trustindex verifies that the original source of the review is Google. The team was super knowledgeable and handled every detail perfectly, it really eased my stress. Bryce was thorough and well equipped to execute at the highest level.Posted on Google Kevin Cloer08/04/2026Trustindex verifies that the original source of the review is Google. They did an amazing job fixing my bowing wall with helical underpinning that feels solid and secure now. price was fair, and everyone I dealt with was super helpful and professional, making the whole process smooth and stress-free for me. I sleep better knowing my foundation is securePosted on Google E Hourani20/03/2026Trustindex verifies that the original source of the review is Google. Executed the work with precision and on time. Tar Heel Foundation did not disappoint!Posted on Google Lesley Burroughs13/03/2026Trustindex verifies that the original source of the review is Google. We had a great experience with Brandon and his crew. Highly recommend!
Sunken concrete, loose soil, underground voids, washouts, sinkholes, and unsupported pads can become harder to correct when left unresolved.
Tar Heel provides professional polyurethane foam injection in Fort Mill, SC for concrete lifting, soil densification, stabilization, void filling, sinkhole treatment, washout repair, and underground support.
Schedule an inspection to identify the cause and determine which polyurethane foam injection solution may be appropriate for your property.