Slab Lifting

Lifting a Garage Slab in East Cobb

This past week, a resident in East Cobb, GA reached out to Ground Consolidation Services about multiple cracks and settlement issues in his garage. Given that he parked his vehicle in his garage on a daily basis and used it to enter and exit his home, he was eager to get the slabs back in place. The GCS crew showed up for the appointment and inspected the entirety of the concrete slab. We observed that several sections had cracked, mainly as a result of poor compaction and seasonal freezing temperature fluctuations. To make matters worse, the cracked sections had sunk into the soil void underneath.

To repair the damage, we drilled non-invasive 3/8” holes through the slab and injected Alchemy-Spetec’s AP Lift 430 high-strength polyurethane foam. Once injected, the rapidly expanding foam compacted the loose soil underneath, filled in any remaining voids, and lifted the slab, curing to 90% in just 15 minutes. We also used a concrete polymer-blended material to seal cracks across the garage. The homeowner praised the GCS team for their speed and accuracy. He was even happier to have a level, crack-less garage!

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Concrete Leveling at Ponce City Market in Atlanta

Ground Consolidation Services was called in to eliminate trip hazards at the popular Ponce City Market in downtown Atlanta recently. There were a couple of areas of heavily traveled walkway that had settled over time to the point of becoming a trip hazard. The property management team was diligent in recognizing these issues early before repair became more invasive as well as more expensive. More importantly, they addressed the issue before any accidents occurred which would undoubtedly be followed by costly litigation. Oftentimes we see trip hazards removed by simply grinding down the concrete. While in the short term this may work it does not address the reason the concrete is sinking in the first place and eventually you run out of concrete to grind. Injecting our high strength polyurethane foam through the concrete via small 3/8 inch holes fills any voids, compacts unstable soil, and lifts the concrete back to its original position. Trip and fall lawsuits are a big business however they can be easily avoided with a little property maintenance. If you notice any uneven or sinking concrete around your properties give us a call for a free evaluation. We would love to help!

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Leveling and Stabilizing a Factory Floor

Body - Leveling & Stabilizing a Factory Floor

Recently Ground Consolidation Services was contacted by a South Carolina engineering and contracting firm for some help at an industrial food grade production plant. Due to poor compaction of the soils under the slab, cracking and settlement occurred. This was especially problematic because large injection mold machines sit atop this area and have to be level to work properly. Obviously having machines of this nature not running is quite costly to a production facility.

It was determined that soft unstable soils existed as far as 5 feet below the surface. GCS performed a series of deep soil injections using Alchemy-Spetec's AP Lift 475, a high- strength hydro-insensitive polyurethane foam capable of supporting 14,000 lbs per square foot. The deep soil injection process used in this application is a form of compaction grouting designed to squeeze the loose soils in a confined space. Once the soil was stabilized, we injected directly through the slabs in order to lift them back to their original level position.

The facility engineers and managers were thrilled to get the machines back online, not to mention all this was done by lunchtime! These issues are all too common and unfortunately, a lot of people don’t know that these less invasive, less costly, and less time-consuming repair options are available. The alternative to our method would have been removal and replacement of the concrete. Could you just imagine the time, cost, and mess (especially in a food-grade facility)? If you see signs of concrete settlement, such as cracking or uneven joints, give us a call for a free evaluation!

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Stabilizing Soil and Lifting Slabs at an Atlanta Shopping Center

This past week a popular shopping center in the Buckhead area of Atlanta called in Ground Consolidation Services to perform polyurethane injections for the purpose of slab lifting and soil stabilization. We were referred to the property management team by NOVA Engineering, one of the south’s premier engineering firms. There were several areas throughout the shopping area that were suffering from unstable soil issues under the concrete. In some areas we injected Alchemy-Spetec’s AP Lift 430 directly through the slabs for the purpose of lifting and eradicating trip hazards. In other areas where the soil issues lie deeper we performed subsurface polyurethane injections through pipes. The deep injection process of our expanding structural foam squeezes and combines with the loose soils therefore stabilizing the concrete above from any future settlement. If you notice settling concrete around your property don’t wait to do something about it as it will undoubtedly get worse and cost you more in the long run.

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Driveway Repair in Flowery Branch, GA

Body-Driveway Repair Flower Branch GARecently, a couple in Flowery Branch, GA reached out to us about their sunken driveway. They had been working from home, no thanks to the Coronavirus pandemic when they began to notice that their driveway was sinking. Their house is located on a hill and due to poor compaction during construction, the driveway gradually began to sink and slide down the hill. To make matters worse, their walkway was also sinking and had become a trip hazard.

The Ground Consolidation Services crew showed up for the appointment prepared and ready to observe all GCS COVID-19 Safety Guidelines. The driveway repair was the easiest part for us. We started by drilling small non-invasive 3/8” holes into the slab. Next, we injected Alchemy Spetec's AP Lift 430 high strength polyurethane foam through the injection holes. The expanding structural foam travels the path of least resistance, therefore, filling all void areas as well as compacting any loose soil under the slab. Once the soil is compacted the expansion of the foam allows us to lift the slab as close to the original position as possible. In this case, we were able to raise the slab to within an eighth of an inch of its original position.

We inspected the walkway and observed that it had settled about 1.5” into the soil. That wasn't all. The edge of the sunken part of the slab had also wedged under an adjacent level section. This damage was a result of poor drainage as well as compaction issues.

To repair the damage, we had to saw-cut at the point of the failed expansion joint located between the two concrete slab sections. This freed up the sunken slab for us to perform the lifting process. We carried out the same steps as the driveway repair by drilling 3/8” holes in the slab and injecting AP Lift 430 to level it with the other section.

The homeowners were thrilled with the outcome!

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Step Repair in Duluth, GA

Step Repair in Duluth, GAWe got a call from a couple who happen to be teachers living in the suburbs of Duluth, GA. They had discovered a challenge with the stairs at the front of their stoop. There was a gap between the stoop and steps measuring about 1 and a quarter inches.

Our experts at Ground Consolidation Services arrived at the scene ASAP. After inspecting, we observed that the steps had also rotated a little in the opposite direction of the house. The soil underneath the steps was unstable because of inadequate compaction during construction.

We began work on the steps by drilling small 3.8 inch holes, just enough for us to inject Alchemy Spetec's AP Lift 430 polyurethane material through them. Other materials like cement grout would require considerably more space. The AP Lift 430 we injected gently raised the step back up.

We also used a mechanical jack system to manipulate the steps into position as part of the lifting process. We attached the jack to the step to apply pressure, forcing the steps to rotate back to their original position during the lifting process. We rounded up the procedure by sealing the access holes.

After the procedure, the stairs were level and in their normal position - in place with the stoop. The couple was very happy with the outcome. They were amazed at how we accurately returned the stairs to their original position in such a short time. GCS helped them to take care of a hazard and saved them time!

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GCS Lifts Sunken Steps for Multiple Homeowners Association Members in Hoschton, GA

A neighborhood homeowners association member in Hoschton, GA recently found GCS via Facebook.  Multiple homeowners in the same general area had problems with their front steps sinking.  GCS was called in to perform an inspection and provide a free repair estimate.  The estimator determined that repairs were possible and GCS crew were called in to do the job.

GCS crew used a mechanical jack to lift the steps close to level. They then injected Alchemy-Spetec's AP Lift 430 to finish the leveling process and secure the steps in place.  GCS has performed this procedure for seven homes in the same subdivision so far.  All steps have been leveled perfectly. Residents so far have been very pleased with the results.

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Commercial – Industrial Slab & Concrete Repair

The photos in the graphic to the right depict two nightmare scenarios that no commercial - industrial property owner or manager wants to endure:

  • A Collapsed Slab
  • Cracked Concrete

Gound Consolidation Services can repair slabs in danger of collapse, lift sunken slabs, and repair cracked concrete. The state of the art polyurethane, polyurea and epoxies we use allow us to offer you the following advantages:

  • No Excavation
  • No Demolition in Most Cases
  • Clean, Fast, and Environmentally Friendly
  • No Heavy Equipment Required
  • No Permitting Required in Most Cases


Settled Slabs Cause...

  • Damage to Material Handling Equipment & Loads
  • Uneven/Unsafe Racking & Shelving
  • Slab Joint Damage (Spalls)
  • Trip Hazards & Litigation Risk

Concrete Cracks Cause...

  • Slab Deterioration Over Time
  • Rocking/Moving Slabs
  • Damage to Material Handling Equipment & Loads
  • Trip Hazards & Litigation Risk


Stabilizing & Lifting Slabs:

Slabs are stabilized and leveled with high strength polyurethane resin. In optimal conditions, slabs can often be lifted to within 1/8” of their original level. Polyurethane slab lifting is much more efficient and a lot less expensive than demolishing and replacing the slab or structure.

Repairing Cracks:

Cracks are repaired with epoxy or polyurethane mortar. The mortar protects the edges of the joints from further chipping and spalling while absorbing the impact of hard-wheeled traffic (forklifts and pallet jacks).

Rebuilding Joint Nosings:
(Spall Repair)

Chipped joint edges, or “spalls”, are removed and the concrete is cut to a 90° angle. The joint nosings are then rebuilt with high-strength polyurethane or epoxy.

Filling Joints:

Deterioration of original joint filler can be repaired with high-strength polyurea. After any chipped edges or spalls are repaired, the deteriorated joints are thoroughly cleaned out. Polyurea is pumped in and then shaved to be level with the surface. The polyurea is tack free within two minutes and traffic ready in an hour. It protects the joints from further deterioration and protects the joint nosings from further damage.

The Ground Penetrating Radar Advantage

What Dangers Lurk Beneath Your Valuable Structures?

The Deep Look wireless ground penetrating radar system uses a patent pending unique triple frequency antenna design to create the most accurate image possible of the area beneath your valuable structures. Conventional single frequency antenna GPR systems cannot deliver the same level of clarity. Ground Consolidation Services will use the Deep Look GPR to take remove all uncertainty and take the guesswork out of the diagnostic process. A crystal clear understanding of the problem provides the best foundation for accurate, durable and lasting repairs.

Free Site Evaluation & Job Estimate

The Deep Look wireless ground penetrating radar system uses a patent pending unique triple frequency antenna design to create the most accurate image possible of the area beneath your valuable structures. Conventional single frequency antenna GPR systems cannot deliver the same level of clarity. Ground Consolidation Services will use the Deep Look GPR to take remove all uncertainty and take the guesswork out of the diagnostic process. A crystal clear understanding of the problem provides the best foundation for accurate, durable and lasting repairs.

Click here for info on our warranty packages.

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Lifting Sunken Steps and Stoop in Avondale Estates, GA

Ground Consolidation Services recently received a call from a real estate who was referred by an engineer.  The real estate agent was prepping a house for sale and noticed a dangerous trip hazard: the enter front stoop was sinking into the ground.  This was definitely a problem the agent needed remedied before the closing.

The GCS crew leveled the entire stoop via the process of polyurethane slab lifting.  This, procedure is more cost efficient than replacing the concrete and less messy than "mudjacking" with cement grout.

With the stoop solidly back in place for the long-term, the real estate agent was able to proceed with another lucrative sale!

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Patio Leveling in Alpharetta, GA

Sunken Patio Repair

Ground Consolidation Services recently leveled one end of a concrete patio (with brick overlay) that had settled due to unstable soil.  As you can see from the "before" photo in the included image, a significant gap had appeared between the patio and the bottom edge of the siding on the house.

The suburban family at this residence knew one thing for sure: the siding wasn't moving upwards.  So, their patio must have been sinking into the ground.  They found Ground Consolidation Services and asked for one of our free - and very thorough - site evaluations.

Polyurethane Concrete Leveling

Once the scope of the problem and the cost of the solution were both clear, they hired GCS to repair the problem.  GCS technicians used Alchemy-Spetec's AP Lift 430 polyurethane foam to gradually and carefully lift the patio back to its exact original level.  See the contrast between the "before" and "after" photos.  This powerful polyurethane foam has been used to lift entire small buildings, so there is no doubt about its strength.  Needless to say, the owners of this house were delighted to have their patio repaired at a fraction of the cost of replacement.

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