Why Storm Damage in Houston Creates Hidden Voids
Houston storms are often different that other areas throughout the Midwest. In the Houston area, heavy rainfall, flat terrain, and clay-rich soil combine to create serious drainage challenges for both residential and commerical properties. When storms hit, water does not just run off the surface as it does it softer soil. Instread, it tends to move through the ground, following paths of least resistance and carrying supporting soil with it. This movement creates voids, empty spaces beneath concrete slabs, driveways, sidewalks, and foundations. Over time, those voids grow as more soil is washed away. The concrete above stays in place until it suddenly gives away and falls into the void below.
What Lost Soil Really Means for Your Property
Lost soil is not just dirt washing away, it is the foundation that supports concrete structures. When soil disappears, concrete loses its support and begins to sink, crack, or tilt. When this occurs, it commonly results in:
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Sunken driveways and walkways
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Uneven slabs that create trip hazards
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Cracks forming near slab edges
- Voids and dangerous hazards next to walking areas
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Gaps opening between concrete and foundations
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Pooling water that worsens erosion furthermore
These issues often appear weeks or months after a storm, making it easy to overlook the true cause.
How Storms Create Voids Beneath Concrete
Several storm-related factors contribute to void formation in the Houston area:
Heavy Rainfall and Runoff
Intense storms move water quickly across properties. When drainage systems are overwhelmed for various reasons, water flows beneath concrete slabs and washes soil away.
Saturated Clay Soils
Houston clay soil expands when wet and shrinks as it dries. After storms, shrinking soil pulls away from slabs, leaving gaps that turn into voids.
Poor Drainage Design
Downspouts, culverts, and channels that concentrate water near concrete often accelerate erosion beneath slabs and around culvert pipes.
Repeated Storm Cycles
One storm may create a small void, allowing subsequent storms to enlarge it until the slab can no longer support its own weight.
Why Surface Repairs Do Not Solve Void Problems
After storms, many property owners try quick fixes. These fixes can be filling cracks, filling low spots, or sometimes concrete is replaced entirely. The problem is that none of these solutions address the missing soil underneath the surface. Replacing concrete without filling voids simply places a new slab over the same unstable conditions. In many cases, the new concrete begins to settle again within a short period. We have discovered that true storm damage repair starts below the surface.
How PolyTex Concrete Repairs Voids and Lost Soil
PolyTex Concrete specializes in repairing storm damage by stabilizing soil and eliminating voids beneath concrete. Their approach focuses on restoring structural support rather than masking symptoms.
Through the use of professional injected polyurethane foam, PolyTex Concrete:
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Fills voids created by storm water erosion
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Compacts loose and weakened soil
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Stops further soil loss by sealing erosion pathways
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Lifts sunken concrete back to proper elevation when needed
This process requires little to no excavation and minimal disruption to the property and it’s users.
Why Polyurethane Foam Works for Houston Storm Damage
Polyurethane foam is uniquely suited for storm-related void repair because it:
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Is lightweight and does not overload weak soil
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Expands to fill irregular void shapes
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Is waterproof and resists future washout
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Cures quickly for fast project completion
These qualities make it far more effective than traditional fill materials in Houston’s wet conditions.
Common Areas Affected by Lost Soil After Storms
PolyTex frequently repairs storm damage in:
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Sidewalks along sloped yards
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Garage slabs near downspout discharge
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Commercial walkways and parking areas
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Properties near bayous, ponds, or drainage channels
- Bulkheads and seawalls
Any area exposed to concentrated storm water flow is at risk or increased soil erosion and thus unstable concrete.
Why Houston Properties Are Especially Vulnerable
Houston’s climate produces sudden, heavy rainfall that overwhelms local drainage systems. Combined with clay soil that shifts constantly, this creates ideal conditions for void/hole formation. It’s important to understand that without stabilization solutions, these voids will continue to grow with every storm.
When to Call for Storm Damage Repair
You should consider professional void repair if:
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Your concrete settled after a recent storm or heavy rainfall
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New cracks appeared following heavy rainfall
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Soil erosion is visible near slab edges
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Water pools in areas that previously drained well
- You can visually see soil loss around concrete slabs and culvert pipes
Contact Us
Storm damage in Houston often causes problems beneath the surface long before visible failure occurs. Voids and lost soil are the real threats behind sinking concrete and structural instability.
PolyTex Concrete provides targeted storm damage repair solutions that restore soil support, eliminate voids, and stabilize concrete for the long term. By addressing the root cause of settlement, they help Houston-area property owners protect their investments against future storms.
CALL TODAY FOR A FREE QUOTE: 281.969.3005











