We Treat Your Home Like Our Own

Acculevel was founded in 1996, and is well known in the industry for repairing foundations, basements, and crawl spaces. We raise and repair concrete structures for thousands of customers per year.


A concrete slab sinks as the soil underneath it shifts. Often, the cause for this is erosion. Rain comes down and saturates the ground, mixing the water into the soil. Then, when the water drains away, it takes part of the soil with it. This erosion can happen gradually as a natural process, or suddenly if it’s caused by a broken pipe or ruptured drain. If the ground under a slab is eroding quickly or seems loose, you should evaluate your home’s guttering and plumbing systems. It’s possible the downspouts or plumbing are draining under the slab and washing out the soil.
In other circumstances, the slab moves because of the ground itself. It’s possible that it wasn’t properly compacted before the concrete was poured. The extreme weather cycles in the Midwest contribute another factor. The ground floods in the spring, then dries out during a summer drought, which prompts erosion Then there’s the winter freeze-and-thaw pattern. The ground expands when it freezes, and contracts as it thaws. This fluctuation also contributes to shifts in the soil, which accelerates the settling process.
Concrete rarely settles evenly; usually one end will sink more significantly than the other. When this happens, the stress of the uneven support will sometimes crack the slab. At that point, you have high and low points on the concrete, and a crack or joint between slabs that will catch a pedestrian’s toe. These are trip hazards and a liability issue.
Sometimes, an uneven slab can also cause damage to your home. It may redirect rainwater towards your house, instead of away from it. This leads to water damage to your foundation, and possibly to leaks in your basement or crawl space. Over time this extra moisture can cause serious damage. Water permeating into your home can cause rotting in the structural wood flooring system (sill plate, floor joists, etc) and allow mold to flourish and grow.
Slab lifting is done by injection. Small holes are drilled through the concrete slab, and material is injected below it. This material fills the void underneath the concrete, and gradually the pressure of this filler being forced under the slab creates lift. The type of fill material varies; many companies use a concrete or limestone slurry referred to as “mud” and this process is generally called mudjacking. As the slurry hardens, it creates lift below the slab.
At Acculevel, we use a polyurethane foam. In our experience, slabjacking provides a better and more reliable repair; once the foam is injected, the chemical reaction promptly begins to expand, and it’s this foam that does the lifting. Since it’s more immediate than mudjacking, it allows for better control.
In this video, one of our knowledgeable experts explains why we choose to perform slabjacking:
Slabjacking uses specialized equipment, but it’s usually installed in a standard-sized service truck that can park in the driveway or street without issue. Slabjacking repair work rarely requires an Acculevel crew driving across your lawn, or disturbing your landscape; the slabjacking equipment has a 250 foot injection hose to maximize our reach to the repair section.
In fact, there is very little mess generated at a slabjacking job site. Generally, crews only need to clean up some dust generated from drilling through the concrete, and maybe trace amounts of foam from the injection site.
This is preferable to the messy process of replacing a slab. Concrete demolition often involves the use of a jack hammer, which is noisy and creates debris that adds to landfills. Re-pouring concrete requires building forms, a concrete truck, and the use of this equipment in close proximity to the work site. This results in a significant amount of trash and upheaval on your property. The new slab can also be visually jarring, as it won’t match the other existing sections in color or texture.
Slabjacking works with the existing concrete slab, so the costs are limited. They depend more on the size of the slab being lifted, and the amount of void under the slab. (The larger the gap, the more material is required.) The costs to replace concrete can be double the price of slabjacking. For more details on costs, please review our article on costs comparisons.

Dealt with a pressing water intrusion issue in Dennis's basement, where the walls are a combination of old brick and cinder block. The team focused on waterproofing to ensure the basement remains dry and protected from future water damage. The approximate cost for this vital work is around $9,200, set in zip code 47803.
Near Terre Haute, IN
We tackled a foundation issue where a living room extension, partly on a crawl space and partly on a basement, was sinking. The crawl space was hard to access, requiring careful excavation. By installing new piers, we provided the necessary support to stabilize the structure. The job was completed with an approximate cost of $13,400.
Near Terre Haute, IN
Recently, we worked on a comprehensive structure repair addressing a wall that was separating from the ceiling. This project focused on ensuring the stability and safety of the crawl space. Our team diligently reinforced the area, which is crucial for maintaining the home's structural integrity. The job, located in zip code 47802, was approximately priced at $35,500.
Near Terre Haute, IN
We addressed water intrusion issues in Jeff's basement, which featured cinder block walls and mold concerns. By installing a waterproofing system, we aimed to prevent further moisture damage and maintain a dry environment in the basement of a library. The job was carried out in the 47804 area with an approximate price of $16,700. Our focus was on ensuring long-term protection and structural integrity.
Near Terre Haute, IN
Dealt with a persistent leak in a Michigan-style basement. A 2x8 ft wall section was patched, with additional waterproofing measures implemented to prevent future water intrusion. The previously exterior stairs posed a challenge due to their integration into the basement. Estimated cost for the repair is approximately $12,200. The customer is available for texts and emails for further communication.
Near Terre Haute, IN
We tackled a challenging slabjacking project on the front porch for Connie in the 47804 area. The porch, leaning toward the house, had dropped about 2 to 2.5 inches causing structural concerns. Our team leveled and stabilized the porch effectively, ensuring it remains secure and aligned. This project was handled with a professional approach for an approximate cost of $2,794.
Near Terre Haute, IN
In Michael's home, located in the 47803 area, we focused on encapsulating the crawlspace to address moisture issues. Our team installed a vapor barrier and ensured the proper sealing around the area, which is a crucial preventive measure to keep moisture and dampness at bay. This encapsulation project was carried out for about $30,767, providing long-term protection and enhancing the home's structural integrity.
Near Terre Haute, IN
Recently completed a basement waterproofing project in zip code 47805 to address water issues for Nancy. Our team installed a thorough waterproofing system, including a sump pump and extensive drainage solutions, to secure the basement from water intrusion. This significant effort ensures long-term protection, completed at an approximate cost of $8,100.
Near Terre Haute, IN
We successfully leveled the pillars of Tyler's carport in zip code 47802. The uneven surfaces were corrected using slabjacking, ensuring stability and durability. This essential foundation repair was completed with a budget close to $6,600, providing a secure and level structure.
Near Terre Haute, IN

