Empty Space Under Your Concrete?
If there are gaps or empty spaces under your concrete, the problem won’t fix itself—it will only get worse over time.
At Greenstar Insulation, we provide professional void filling to stabilize the ground beneath your concrete, prevent further sinking, and protect your surfaces from costly damage.
Why Voids Form Under Concrete
Concrete may look solid on top, but underneath, the soil can shift, wash out, or settle—creating empty spaces called voids.
In the Shreveport and Bossier City area, moisture and soil conditions play a big role.
Here’s what typically causes voids:
- Water erosion from poor drainage or heavy rain
- Soil settling or improper compaction during construction
- Leaking pipes or drainage issues
- Expanding and shrinking clay soil
- Washout from downspouts or runoff
As these voids grow, the concrete above becomes unsupported and at risk of cracking or collapsing.
Common Signs You Need Void Filling
- Concrete sounds hollow when you walk or drive over it
- Visible gaps under slabs or along edges
- Cracks forming without clear reason
- Sections starting to sink or settle
- Water draining under the concrete
- Uneven surfaces developing over time
If you notice any of these signs, it’s important to address the problem before the concrete drops further.
Voids often form under areas like your driveway, garage floor, or interior concrete floors. We can stabilize these areas and lift them if needed at the same time.
Get a Free Estimate
Dealing with sinking concrete or uneven surfaces?
Let’s take a look.
Or request a no-pressure quote today.
Our Fix: Fill and Stabilize the Space Beneath Your Concrete
We don’t just treat the surface—we fix the problem underneath.
Our simple 3-step process:
1. Drill small holes
We drill small access holes into the concrete where voids are present.
2. Inject material to fill the void
We pump material under the slab to fill empty space, stabilize the soil, and support the concrete above.
3. Patch and clean
We seal the holes and leave the area clean and ready to use.
Most void filling jobs are completed in just a few hours—and the surface is ready to use right away.
Simple, Fast Fix—Get Your Free Void Filling Estimate
Ignoring voids under your concrete can lead to bigger problems, including cracks, sinking, or even structural failure.
At Greenstar Insulation, we make it easy to fix the issue before it gets worse—without major disruption or high replacement costs.
Why concrete leveling is a smarter, faster fix:
- 50% more cost-effective than replacement
- Prevents future sinking and structural damage
- Stabilizes the soil beneath your concrete
- Ready to use immediately after the job is done
- Completed in just a few hours—not days
- Clean, low-mess process with minimal disruption
You protect your concrete and extend its life—without tearing it out or starting over.
Why Property owners Choose Greenstar Insulation
When you’re dealing with sinking concrete or problems around your home, you want a company that shows up, does the job right, and stands behind their work. That’s exactly what we do.
Homeowners across Shreveport, Bossier City, and surrounding areas trust Greenstar because we keep things simple, honest, and reliable—every step of the way.
What sets us apart:
- 15+ years of hands-on experience
- Local team that understands Louisiana soil conditions
- Fast, clean work with minimal disruption
- Most jobs completed in just a few hours
- Concrete ready to use right away
- 2-year labor warranty for added peace of mind
- Clear communication from start to finish
- One trusted team for both concrete leveling and insulation
- No pressure—just straightforward recommendations
We focus on fixing the problem the right way so you don’t have to deal with it again. Energy Protected. Concrete Corrected.
FAQs for Void Filling
Void filling is the process of filling empty spaces beneath concrete to provide proper support and prevent future settling. Without support underneath, concrete can crack, sink, or even collapse over time. Filling these voids helps stabilize the slab and protects your investment.
Common signs include hollow sounds when walking or driving over the surface, visible gaps under the slab, or areas that are starting to sink. If you’re unsure, we can inspect the area and determine if void filling is needed.
Yes, void filling can be done to stabilize the area without lifting if the concrete is still level. However, if sinking has already occurred, we may recommend combining it with concrete leveling to restore the surface.
Most void filling jobs are completed in just a few hours. The process is fast and efficient, allowing you to use the surface again the same day without long delays.
Yes, by filling the empty space and stabilizing the soil, void filling helps reduce the chances of future settling. It addresses the root cause of the problem instead of just fixing the surface.
Void filling is commonly used under surfaces like driveways, garage floors, pool decks, and commercial slabs where soil support is critical.
In most cases, yes. It is far more cost-effective, faster to complete, and much less disruptive than tearing out and replacing the concrete.
Yes, we also provide services like expansion joint repair and filling to help protect and extend the life of your concrete.
Areas We Serve
We proudly provide concrete leveling and home insulation services across Northwest Louisiana, helping homeowners and businesses fix sinking concrete and improve energy efficiency.
Our main service areas include:
- Shreveport, LA
- Bossier City, LA
- Benton, LA
- Haughton, LA
- Minden, LA
- Stonewall, LA
- Blanchard, LA
- Greenwood, LA
- Vivian, LA
- Plain Dealing, LA
- Coushatta, LA
- Mansfield, LA
- Springhill, LA
- Ruston, LA
- Monroe, LA
- West Monroe, LA
- Farmerville, LA
- Sterlington, LA
- Texarkana, TX
- Natchitoches, LA
We travel up to 100 miles from Bossier City, so if you’re nearby and not sure if you’re in our service area, just reach out—we’re happy to help.
Whether you need to lift uneven concrete or upgrade your home’s insulation, our team is ready to get the job done quickly, cleanly, and the right way the first time.