Soil Washout
Water runoff or drainage has removed soil from beneath or beside a concrete slab.
Learn About Concrete Leveling →Support Restoration Beneath Concrete
Void Filling & Slab Stabilization in The Woodlands, TX
Ghost Concrete Leveling fills accessible voids and restores support beneath eligible concrete slabs using polyurethane injection.
Slab stabilization may be appropriate when concrete needs additional support beneath the surface, even when substantial lifting is not required.
Why Voids Form Beneath Concrete
Concrete slabs depend on the soil and fill beneath them for consistent support. When water moves soil away, fill material settles or the ground shrinks, open spaces can form below the concrete.
These unsupported areas may contribute to slab movement, cracking, hollow-sounding sections or continued settlement over time.
Polyurethane void filling places expanding material into accessible spaces beneath the slab. Depending on the project, the goal may be to stabilize the concrete, lift it or perform a controlled combination of both.
When substantial lifting is needed, review our main concrete-leveling service. We also provide dedicated driveway leveling and sidewalk and walkway leveling.
Void and Slab-Support Problems We Evaluate
Poorly Compacted Fill
Material beneath the concrete has settled after installation and reduced support under the slab.
View All Services →Unsupported Slab Edges
Open spaces are visible beneath driveway, walkway, patio or other slab edges.
Explore Driveway Leveling →Hollow-Sounding Concrete
Portions of the slab may sound different or feel unsupported compared with surrounding areas.
View Concrete Leveling Projects →Continued Settlement
Concrete has continued moving because underlying support was not restored.
Explore Concrete Lifting →Commercial Slab Voids
Unsupported concrete at managed properties, walkways, access areas or commercial sites.
Explore Commercial Stabilization →How Void Filling and Slab Stabilization Works
1. Evaluate the Concrete
We review visible settlement, slab condition, suspected void areas, drainage and access.
2. Define the Objective
The project is planned around stabilization, lifting or a controlled combination of both.
3. Inject Polyurethane
Expanding polyurethane is introduced beneath the slab to fill accessible void space and restore support.
4. Monitor and Review
Slab movement and support are monitored before injection points are patched and the project is completed.
Concrete Surfaces That May Need Stabilization
Driveway Slabs
Support loss beneath driveway sections, edges and garage approaches.
Explore Driveway Leveling →Sidewalks & Walkways
Unsupported panels along residential, commercial or managed-property pedestrian routes.
Explore Walkway Leveling →Patios & Pool Decks
Outdoor slabs affected by washout, moisture movement or loss of support.
Explore Outdoor Concrete Leveling →Garage Floors
Garage slabs with low, hollow or unsupported sections where access is suitable.
Explore Garage Floor Leveling →Commercial Concrete
Walkways, access areas and eligible slabs at commercial or managed properties.
Explore Commercial Leveling →Slabs Requiring Support Only
Concrete that needs added support beneath the slab without a major change in elevation.
Request an Evaluation →What Slab Stabilization Does—and Does Not Do
Void filling restores support in accessible areas beneath concrete, but it does not make old concrete look newly poured. Existing cracks, joints, stains and surface wear may remain visible.
Stabilization does not automatically repair plumbing leaks, active erosion, failed drainage or broader soil and grading problems. Those conditions may need separate correction.
The process cannot guarantee that unrelated future soil movement will never occur. Each project depends on slab condition, site conditions and the underlying cause of support loss.
Void Filling and Slab Stabilization Cost Factors
What Affects Pricing
- Total slab area
- Estimated void size and depth
- Polyurethane material required
- Whether lifting is also needed
- Equipment and hose access
- Residential or commercial conditions
- Number of injection locations
What to Send for a Faster Quote
- Complete property address
- Wide photographs of the affected slab
- Close photographs of visible gaps
- Photos showing drainage or washout
- Description of when movement was noticed
- Approximate slab dimensions
- Gate or access instructions
Start by requesting a slab-stabilization quote with the project address and clear photographs.
Void Filling and Slab Stabilization Service Areas
The Woodlands
Polyurethane void filling and slab support throughout The Woodlands and nearby communities.
View The Woodlands →Conroe
Slab stabilization for residential, commercial and managed properties throughout Conroe.
View Conroe →Spring
Void filling and concrete support restoration throughout Spring and nearby North Houston communities.
View Spring →Review our complete concrete-leveling service area for additional communities.
Void Filling and Slab Stabilization FAQ
Is void filling the same as concrete leveling?
They are related, but not identical. Void filling may restore support with little or no lifting, while concrete leveling is intended to improve slab elevation and alignment.
Can every underground void be seen before injection?
No. Evaluation is based on visible site conditions, slab movement, accessible edges and available project information.
Will slab stabilization stop all future settlement?
No repair can guarantee that unrelated soil, drainage, plumbing or erosion conditions will never cause future movement.
Can a slab be stabilized without lifting it?
Yes, in some projects. The injection plan can focus on restoring support while limiting slab movement.
Does void filling repair drainage or erosion?
No. Drainage, plumbing leaks, active erosion and grading problems must be addressed separately.
Where do you provide void filling and slab stabilization?
Ghost Concrete Leveling serves The Woodlands, Conroe, Spring and nearby North Houston communities.
Does Your Concrete Need Additional Support?
Send the property address, clear photographs and a short description of the affected slab. Ghost Concrete Leveling will review the information and explain the next step.
Review our concrete-leveling projects or explore all Ghost Concrete Leveling services.