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PolyRenewal injection for concrete repair

Concrete Driveway Repair

Do you have a concrete driveway that’s cracked, sunken and uneven? Complete Basement Systems can quickly and effectively repair your driveway by lifting the concrete, rather than tearing out and replacing it.

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At Complete Basement Systems we use a process called PolyRenewal™ to raise the existing concrete slab back to its original position.

If you have an uneven driveway that you need to be repaired, contact us today. We offer free estimates for concrete lifting in Denver, Colorado Springs, Aurora, and nearby.

What causes concrete driveways to sink?

Erosion is a common cause of sunken concrete. Erosion washes away soil from under your driveway, creating a void or space under the concrete slab. Your driveway can begin to sink in areas where the soil has been washed out. Clogged gutters, downspouts that are not installed correctly, and poor yard drainage can make erosion worse. A heavy load, such as an RV that’s kept in your driveway, can cause sections of the driveway to sink and crack over time. If you have a newer home with a sinking driveway, it could be because the ground around the house is settling or the base of the driveway was not compacted properly. A sinking driveway near your garage can lead to foundation cracks and expensive damage over time.

Concrete Driveway Repair


The first step toward concrete driveway repair is making sure you know the warning signs of the problem. Here are the most important things to notice. 

  •  Cracked Concrete 

First off, you need to pay attention to cracked concrete. When concrete has cracks in it, it’s typically because there’s an issue with the soil underneath. More than likely, you’re dealing with issues regarding soil problems underneath the concrete, which can lead to serious cracking problems overall. 

The reason that cracked concrete is so important to fix is mostly because of waterproofing problems. When there are cracks all the way through concrete, water can pass through it. That water can pool on top of the concrete, leaving ugly stains and weighing down the concrete as a whole. 

  • Concrete Sinking 

This tends to happen right before you have cracked concrete problems. If you’re noticing your concrete has started to sink in the middle, chances are that it is going to start cracking if you leave it for long enough. That’s because there’s usually a hole underneath the concrete, and if you leave it for long enough, you’re going to have the concrete start to crack because concrete can’t bend well. 

Additionally, pay attention to how the concrete is matching up with other concrete in the area. Have you noticed that the concrete slabs at one point matched up well with other concrete slabs nearby, but now they no longer match up properly? This could be an indication that you’re experiencing concrete shifting, which can be a big deal for concrete slabs.

What are the most common reasons for concrete driveway sinking? As with other concrete areas, there’s not just one response. There are a few reasons that can cause concrete driveway sinking, including all of these. 

  • Soil Erosion 

Soil erosion tends to be the biggest reason for sinking in concrete overall. When your concrete driveway has issues with the soil eroding underneath the concrete itself, you’re going to end up with plenty of problems. That soil erosion can come from several places, but it most commonly comes from rain and flooding around the area. 

Different types of soil will be at either a higher or lower risk for soil erosion. Expansive soils tend to be one of the types at a much higher risk. With expansive soil, the particles of the soil tend to move apart from each other due to rain or flooding. That can allow the soil particles to move away from the rest of the soil more easily. 

  • Improper Preparation or Usage 

It’s also possible to have issues with improper preparation in your concrete driveway. Essentially, the soil underneath the concrete needs a specific amount of preparation for it to work properly and hold up the concrete weight. If the people who initially poured the concrete don’t know how to prepare that concrete, it may not be ready to hold up the weight properly. 

Even if the preparation was accurate, you might run into a problem with too much weight on a concrete slab. This is especially prominent with concrete driveways. When you have a concrete driveway, you’re much more likely to have weight issues when you allow a car that’s heavy to rest on the driveway for many months without moving or driving it.

So how can you raise a concrete driveway most effectively? You’ll see a few suggestions thrown around for how to raise a concrete driveway. Here are some of your options. 

  • Problematic Answers 

Some homeowners might assume they just need to re-pour the entire concrete slab to make sure they can use it. Re-pouring an entire concrete slab may seem like the best answer, but it’s not. When you re-pour an entire slab, you have to wait for it to set and ensure that it’s solid enough. Additionally, if there are any problems underneath the slab, you run the risk of just having to handle these problems again in a few years. 

In the past, the most “traditional” method of raising concrete was through a process called slabjacking or mudjacking. These processes were beneficial when they were the only way to raise concrete, but nowadays many people recognize them for what they are: heavy, inefficient methods of halting concrete failure rather than actively raising the concrete. 

  • PolyRenewal™ Injection 

Today, most homeowners will use polyurethane foam injections rather than concrete slurry to raise concrete. Whereas concrete slurry is heavy, inefficient, and doesn’t raise the concrete, PolyRenewal™ is lightweight, simple to apply for an expert, and will lift the concrete back to its initial position. That’s why it’s becoming such a useful option for many homeowners with sunken concrete. There are ways to use PolyRenewal™ in both residential and commercial applications, which means you can lift sunken concrete no matter where you find it. Because it has a decades-long history with the Department of Transportation, you also don’t have to worry about whether or not it’s effective. You can be certain that it is.

Is it possible to just raise your concrete driveway on your own? Although the DIY mindset can be beneficial for some things, it’s not for others. Think about these important things when it comes to understanding how you can raise a concrete driveway. 

  • The Downfalls of DIY 

One of the biggest problems with DIY is the same reason it’s so popular. Essentially, DIY works well because you’re the one doing it. However, the problem with that is you’re not an expert. If you’re dealing with a scenario where you don’t need expertise, this is great. However, if you’re working with a scenario where you do need expertise, such as raising a concrete driveway, it can be a huge problem. 

A DIY solution for a sunken driveway is more likely to cause harm than it is to save you money. Whenever you’re dealing with a big problem like a sunken driveway, remember that a DIY solution is very likely to cost more money than an expert solution. With a DIY solution, you’ll typically have to go with an expert anyway. 

  • A Better Answer: Expert Help 

The best way to fix your concrete driveway is to get expert help with doing so. Fixing your concrete driveway doesn’t have to be difficult. It can be a fast and permanent fix. However, you need to make sure you’re doing it the right way. An expert’s touch will help you make sure this fix is both fast and permanent. If you’re seeing issues with your concrete driveway, you need to handle it as quickly as possible. Get help from the best in the business. Schedule a free inspection with Complete Basement Systems today to learn more about how you can restore your concrete driveway to its initial position.

Before and after: Driveway lifting

Driveway sinking beforeDriveway sinking after

This concrete driveway had sunk about two inches in front of the garage. Using PolyRenewal™, we were able to raise the concrete, making the driveway even with the garage entrance. No more ugly sunken driveway!

We can raise your uneven concrete driveway

While surface problems can likely be patched, this won’t fix the underlying settlement problem and more cracks can form in your driveway. Although do-it-yourself repairs might be less expensive, they can be messy, require special tools and equipment, and it can be as long as 30 days before you’re able to use your driveway again. No matter what’s causing your driveway to sink, we can fix the problem fast and prevent further sinking with our concrete repair services.

PolyRenewal™ is a fast, effective option for repairing your sunken concrete driveway. First, your contractor will drill small holes in the slab. Then they will inject a high-density polyurethane through the holes. The polymer will spread beneath the slab and lift it up. Finally the holes are patched and the cracks are filled. You’ll be able to use your driveway within one day.

Contact the experts at Complete Basement Systems today to request your free driveway lifting estimate in Denver, Colorado Springs, Aurora, Littleton, Cheyenne, Fort Collins, Thornton, Arvada, Westminster, Parker, Boulder, Lakewood, or nearby.

Serving Greater Denver area, Colorado Springs, Eastern Colorado, and parts of Nebraska and Wyoming

Colorado Springs, CO

707 County Line Rd.
Palmer Lake, CO 80133

Denver, CO

4686 Ivy St
Denver, CO 80216