Void Filling in Kaukauna, WI
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Void Filling in Kaukauna, WI
What is Void Filling and Why is it Important?
Void filling is a critical foundation repair solution used to fill underground gaps and air pockets that develop beneath concrete slabs, driveways, sidewalks, and foundations. These voids often result from soil erosion, washout, poor compaction, or settling, causing structural instability and uneven surfaces.
At Kaukauna Foundation Repair, we specialize in advanced void-filling techniques, using high-density polyurethane foam injection and compaction grouting to restore support and prevent further foundation damage.
Common Causes of Voids Under Foundations
Voids form when soil beneath a structure weakens or shifts, creating empty spaces that compromise the stability of concrete slabs and foundations. Common causes include:
✔ Soil Erosion from Water Runoff – Poor drainage or plumbing leaks wash away supportive soil, creating large voids under concrete.
✔ Improper Soil Compaction – Weak or loose soil beneath a slab leads to settling over time.
✔ Underground Plumbing Leaks – Water seeping into the ground dissolves and displaces soil, forming air pockets.
✔ Expansive Clay Soil Movement – Moisture fluctuations cause soil shrinkage and expansion, weakening the ground.
✔ Heavy Structural Loads & Traffic – Parking lots, driveways, and roads experience soil compression, leading to voids beneath.
If voids are not filled, they can lead to cracked concrete, foundation instability, and uneven surfaces.
Our Services
- Concrete Slab Foundation Repair
- Pier and Beam or Block and Base Foundation Repair
- Basement Wall Repair
- Basement Waterproofing
- Cracked Wall / Structural Repair
- Drainage Services and Repair
- House Raising / Lifting
- House Leveling
- Retaining Wall Repair
- Polyurethane Foam Injection
- Commercial Foundation Repair
- Void Filling
- Steel Push Pier Installation
- Slab Pier Installation
- Helical Pier Installation
- Helical Deck Pier Installation
- Pre-Construction Pier Installation
- Foundation Wall Repair
- EverBrace™ Wall Restoration System
- CarbonArmor Wall Stabilization
- GeoLock Wall Anchor System
- PowerBrace Foundation Wall Support

How Our Void Filling Process Works
At Kaukauna Foundation Repair, we use advanced void-filling methods to restore support and prevent future settlement.
Step 1: Site Inspection & Void Identification
- A detailed assessment to locate and measure underground voids.
- Identify causes of soil displacement and develop a repair strategy.
- Determine the best void-filling material based on soil conditions.
Step 2: Choosing the Best Void Filling Method
✔ Polyurethane Foam Injection for Void Filling:
- Expanding foam is injected into voids, lifting and stabilizing the structure.
- Ideal for residential driveways, sidewalks, and patios.
✔ Compaction Grouting for Large-Scale Void Filling:
- Cement-based grout is pumped underground to compact loose soil and fill voids.
- Best for high-load commercial and industrial buildings.
✔ Mudjacking (Slurry Grouting) for Moderate Voids:
- A slurry mixture of cement and soil fills gaps and levels surfaces.
- Suitable for roadways, large concrete slabs, and parking lots.
✔ Soil Stabilization & Deep Injection Grouting:
- Strengthens weak soil layers beneath foundations.
- Helps prevent future void formation and settlement.
Step 3: Implementing the Void Filling Solution
- Inject polyurethane foam, grout, or slurry mix to stabilize the foundation.
- Monitor injection pressure and soil response for even distribution.
- Seal cracks and gaps to prevent further soil movement.
Step 4: Final Inspection & Long-Term Prevention Strategies
- Conduct a post-repair quality check to ensure stability.
- Provide drainage and soil stabilization recommendations to prevent new voids.

Benefits of Void Filling
✔ Prevents Foundation Settlement & Damage – Stops soil washout and concrete sinking.
✔ Restores Structural Integrity – Reinforces foundations, driveways, and walkways.
✔ Long-Lasting & Moisture-Resistant – Polyurethane foam and grout solutions provide durability.
✔ Cost-Effective & Non-Invasive – Less expensive than foundation replacement.
✔ Eco-Friendly & Minimal Disruption – Uses environmentally safe materials with no excavation required.

Cost of Void Filling in Kaukauna, WI
The cost of void filling depends on:
✔ Size & depth of the voids
✔ Extent of soil erosion or washout
✔ Type of void-filling method used
Average Void Filling Costs:
- Polyurethane Foam Injection for Small Voids: $800 – $3,500
- Compaction Grouting for Large Voids: $3,500 – $7,500
- Full Soil Stabilization & Deep Injection Grouting: $8,000 – $15,000+
We offer free inspections and financing options to make void filling affordable.

Why Choose Kaukauna Foundation Repair?
✔ Local Experts in Void Filling & Soil Stabilization – We understand Wisconsin’s soil conditions.
✔ Advanced Repair Techniques – Using polyurethane foam injection, compaction grouting, and deep soil stabilization.
✔ Lifetime Transferable Warranty – Ensuring long-term foundation support.
✔ BBB Accredited & Family-Owned – A trusted name in foundation repair.
✔ Affordable Financing Available – Flexible payment plans to fit your budget.
FAQs About Void Filling
1. Can void filling prevent concrete from sinking?
Yes! Polyurethane foam injection or grout filling stabilizes the soil, preventing further settlement.
2. How long does void filling take?
- Small polyurethane foam void filling: 1-3 hours
- Large-scale compaction grouting: 1-3 days
3. How do I know if there are voids under my foundation?
Look for sinking concrete, cracks, or gaps near the slab edges.
4. Does void filling require excavation?
No! Our polyurethane injection process is non-invasive, requiring only small injection holes.
Looking for Void Filling Near Me?
If you’re searching for Void Filling in Kaukauna, WI, trust Kaukauna Foundation Repair for expert soil stabilization and foundation support solutions.
* Call 920-280-1507 today for a FREE void-filling inspection!