Void Filling in Combined Locks, WI
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Stabilizing Foundations and Preventing Structural Damage with Professional Void Filling
Soil voids can form beneath concrete slabs, driveways, sidewalks, and foundations due to soil erosion, water infiltration, and poor compaction. These empty spaces cause structural instability, leading to sinking, cracking, and foundation failure. If left untreated, voids beneath a structure can compromise its integrity, requiring expensive repairs or complete replacements.
At Combined Locks Foundation Repair, we specialize in professional void filling services in Combined Locks, WI, using advanced polyurethane foam injection, slurry grouting, and soil stabilization methods to restore stability and prevent further soil movement. Whether your property has foundation voids, sunken concrete, or underground cavities, we provide long-term solutions that reinforce and strengthen your foundation.
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 Void Filling Works
Void filling involves injecting stabilizing materials into underground cavities to eliminate air pockets and reinforce the structure above. Our comprehensive void filling process includes:
1. Inspection and Void Detection
- Ground-penetrating radar (GPR) scanning and soil testing to detect hidden voids beneath concrete slabs and foundations.
- Structural evaluation to determine the impact of voids on floors, foundations, and concrete surfaces.
- A custom void filling plan based on the size, location, and severity of soil voids.
2. Filling and Stabilizing the Void
Polyurethane Foam Injection
- High-density polyurethane foam is injected into voids, expanding to fill empty spaces.
- Lightweight yet strong, the foam stabilizes the structure without adding excessive weight.
- Water-resistant properties prevent further soil erosion and void formation.
Cementitious Slurry Grouting
- A cement-based mixture is pumped into larger voids to provide structural support.
- Ideal for large-scale soil stabilization beneath highways, industrial buildings, and heavy-load structures.
Compaction Grouting
- Pressurized grout is injected to compact loose or shifting soil, eliminating weak spots.
- Helps reinforce foundation piers and prevent further ground settlement.
3. Surface and Foundation Adjustments
- Concrete slab lifting restores even surfaces after voids are filled.
- Additional soil stabilization measures are implemented to prevent future voids.

Benefits of Void Filling
Filling soil voids beneath structures offers multiple long-term advantages, including:
✔ Prevents Structural Damage – Stops foundation cracks, settlement, and instability.
✔ Restores Surface Leveling – Eliminates uneven floors, sunken driveways, and tripping hazards.
✔ Reduces Water Erosion Risks – Blocks water infiltration that contributes to soil washouts.
✔ Enhances Soil Strength – Stabilized ground prevents future sinkholes and void formation.
✔ Cost-Effective Repair Solution – More affordable than complete foundation or slab replacements.
By investing in professional void filling, homeowners and businesses can avoid major structural problems in the future.

What to Expect During Void Filling
Our step-by-step process ensures effective soil stabilization and long-lasting support:
* Step 1: Comprehensive site inspection and void detection using ground-penetrating radar.
* Step 2: Custom void filling plan based on soil conditions and structural needs.
* Step 3: Polyurethane foam injection, slurry grouting, or compaction grouting is applied.
* Step 4: Surface leveling and concrete adjustments to ensure even support.
* Step 5: Final inspection and soil stability verification for long-term durability.
We use precise application techniques to ensure uniform stabilization and prevent future void formation.

Cost of Void Filling in Combined Locks, WI
The cost of void filling depends on several factors, including:
- Size and depth of voids – Larger and deeper voids require more injection material.
- Repair method used – Polyurethane foam, cementitious grout, and compaction grouting have different pricing.
- Existing soil conditions – Loose or eroded soil may require additional stabilization.
- Property size and structure weight – Larger properties or heavy commercial buildings may need reinforced stabilization.
* Typical void filling costs range from $1,500 to $10,000, but a free on-site inspection provides precise pricing estimates.
FAQs About Void Filling
1. How long does void filling take?
Most void filling projects are completed in one to two days, depending on the size of the area.
2. How do I know if my property has voids beneath it?
Signs include uneven concrete, sinking structures, cracks in floors, and visible soil washouts.
3. Can polyurethane foam injection permanently stabilize voids?
Yes, polyurethane foam provides a durable, water-resistant solution that prevents further erosion.
4. Does void filling require excavation?
No, void filling is a non-invasive repair method, requiring only small injection points.
Looking for Void Filling Near Me?
At Combined Locks Foundation Repair, we provide expert void filling and soil stabilization services in Combined Locks, WI. If you have foundation voids, soil erosion, or sunken concrete, contact us today for a free inspection and repair estimate.