Hidden Costs of Concrete Lifting: What You Need to Know Before You Start

• By Shaun Miller
• September 04, 2024
• Concrete Lifting

Concrete lifting is often seen as a cost-effective solution for uneven or sunken concrete slabs, whether it's for your driveway, sidewalk, or porch stoop. However, before you dive into a project, it's important to understand that there can be hidden costs associated with the process. These unexpected factors can affect both the price and the timeline of your concrete lifting job.

We don’t want you to get caught unaware, so let’s explore the key items that can drive up the cost of your project and provide you with insights to avoid surprises along the way.

The Impact of Foam Usage

One of the primary materials used in concrete lifting is poly foam, which is injected beneath the slab to raise it. The amount of foam required can significantly affect the total cost of your project. For smaller contained areas such as a section of the driveway, walkway or sidewalk, poly foam is an ideal solution. However, some areas, such as large porches, could potentially use more foam than expected depending on the structure beneath the porch and any voids beneath the slab.

Porch stoops are particularly notorious for requiring a larger amount of foam to stabilize properly, sometimes making foam a less cost-effective solution. If the slab was reinforced with rebar, it may prevent the foam from lifting evenly, resulting in a higher volume of material needed to get the job done right. While the initial estimate might seem reasonable, these hidden factors can increase the cost as the job progresses and contractors frequently won’t know about the structure beneath your porch until the project has begun.

Voids Under the Concrete

Voids, or empty spaces under the concrete, are another variable that can affect the cost of concrete lifting. Voids can occur due to shifting soil, erosion, or poor compaction during the initial construction process. Unfortunately, these voids are also not always visible during the initial inspection, which means they may not be accounted for in the original estimate.

When large voids are discovered mid-project, they will require additional foam or even a complete removal and replacement of the concrete to ensure stability. This can result in a higher-than-expected bill, but it's essential for ensuring the long-term durability of the repair.

Disturbed Soil Near Basements

If your concrete slab is located near a basement or an area where significant excavation was once performed, the soil beneath it may be disturbed. Disturbed soil often compresses over time, which can lead to uneven settling of the slab and, subsequently, the need for more foam or additional work to properly lift it.

While disturbed soil conditions are sometimes visible, in many cases, they also aren’t able to be detected until the project is underway. Homeowners should be aware that these unknown factors can cause costs to rise unexpectedly.

Rebar Reinforcements and Their Role

Rebar reinforcements are typically used to strengthen concrete slabs, but they can also complicate the concrete lifting process. When rebar is present, it can prevent the slab from being lifted evenly with foam. In cases like this, more foam may be needed, or the rebar may need to be removed, leading to an increase in both labor and material costs.

In some instances, after evaluating the situation, it may be more cost-effective to remove and replace the slab rather than attempting to lift it. Although this may initially seem like a more expensive route, it can sometimes save money in the long run and ensure a better-quality, long-term repair.

Unexpected Discoveries During the Job

Concrete lifting projects are often straightforward, but sometimes there are unexpected issues that arise during the job. These can include hidden voids, more significant soil shifting than anticipated, or unaccounted-for rebar reinforcements.

The good news is that a reputable contractor will always communicate these findings with you before proceeding. At Foundation Solutions Group, our knowledgeable crew will always take the time explain any new discoveries and help you weigh the pros and cons of the best solutions for your home. While these unexpected factors may affect the cost, transparency and clear communication ensure you’re never left in the dark.

In the end, concrete lifting is an effective way to restore the stability and appearance of sunken or uneven slabs, but it’s crucial to be aware of the hidden costs that may arise during the project. Foam usage, voids, disturbed soil, and rebar can all affect the final price. By working with a knowledgeable contractor who prioritizes clear communication, you can ensure that your concrete lifting project goes smoothly and that any potential surprises are addressed head-on.

If you’re considering concrete lifting for your Kentucky or Middle Tennessee home, contact Foundation Solutions Group today. We’ll guide you through the process, provide a thorough inspection, and ensure you get the best possible results for your investment.