Slabjacking is a concrete leveling technique used to lift and stabilize sunken or uneven concrete surfaces. This method involves injecting a material beneath the slab to fill voids and raise it back to its original position. It is a cost-effective alternative to full slab replacement and is commonly used for driveways, sidewalks, patios, and foundations.
Slabjacking, also known as concrete lifting or mudjacking, is a cost-effective and efficient solution for repairing sunken or uneven concrete surfaces. Whether it’s a driveway, sidewalk, patio, or foundation, slabjacking offers several benefits compared to traditional concrete replacement.
1. Cost-Effective Solution
Slabjacking is significantly cheaper than replacing the entire concrete slab. Instead of demolishing and pouring new concrete, the process lifts and stabilizes the existing slab, reducing labor and material costs.
2. Quick and Minimal Disruption
Unlike concrete replacement, which can take days to cure, slabjacking is completed within a few hours. The area is ready for use almost immediately, making it ideal for homeowners and businesses that cannot afford downtime.
3. Environmentally Friendly
Since slabjacking reuses the existing concrete, it reduces waste and minimizes the environmental impact. The materials used, such as cement-based grout or polyurethane foam, are also eco-friendly.
4. Improves Safety
Uneven concrete surfaces create tripping hazards, leading to potential injuries and liability issues. Slabjacking levels the surface, making it safe for pedestrians and vehicles.
5. Long-Lasting Results
Slabjacking not only lifts the concrete but also stabilizes the soil underneath, preventing future sinking. This provides a durable and long-term solution to settlement issues.
6. Suitable for Various Applications
Slabjacking can be used for a wide range of concrete surfaces, including:
- Driveways
- Sidewalks
- Patios
- Pool decks
- Garage floors
- Foundations
Types of Slabjacking
1. Mudjacking
- Uses a mixture of cement, sand, soil, and water.
- Provides strong support but is heavy and may cause further settlement over time.
- More affordable but may require longer curing times.
2. Polyurethane Foam Injection
- Uses lightweight, expanding polyurethane foam.
- Quick curing time (as little as 15 minutes).
- More expensive but provides longer-lasting results.
3. Stone Slurry Grout Leveling
- Utilizes a cement-based slurry with finely crushed limestone.
- Stronger and more durable than mudjacking.
- Eco-friendly and provides long-term stabilization.
Pros & Cons of Slabjacking
✅ Pros:
✔ Cost-Effective – More affordable than full concrete replacement.
✔ Quick Process – Can be completed in a few hours with minimal downtime.
✔ Non-Disruptive – No need to tear out or replace the concrete.
✔ Eco-Friendly – Uses natural materials and reduces waste.
✔ Long-Lasting – Especially with polyurethane or stone slurry grout.
❌ Cons:
❌ May Not Work for Severely Damaged Slabs – Large cracks or broken slabs may require full replacement.
❌ Soil Instability Can Cause Future Settling – If underlying soil continues to shift, the slab may resettle.
❌ Limited Availability of Certain Methods – Not all areas offer polyurethane or stone slurry grout leveling.
Frequently Asked Questions (FAQ)
1. How Long Does Slabjacking Last?
The lifespan varies depending on the method used. Polyurethane and stone slurry grout leveling can last decades, while mudjacking may require rework in 5–10 years.
2. How Much Does Slabjacking Cost?
Costs range from $3 to $25 per square foot, depending on the method and extent of the repair. Polyurethane injection is typically more expensive than mudjacking.
3. Can Slabjacking Be Done in Cold Weather?
Yes, but colder temperatures may affect the curing process. Polyurethane foam is the best option for winter applications.
4. Is Slabjacking a Permanent Fix?
It can be a long-term solution, but future soil movement can cause settling over time. Proper drainage and soil compaction can help prevent this.
5. How Soon Can I Use My Concrete After Slabjacking?
For mudjacking, wait 24–48 hours before using the surface. Polyurethane foam sets within 15–30 minutes, allowing for immediate use.
Slabjacking is a practical and efficient way to restore uneven concrete surfaces. Choosing the right method depends on your budget, the condition of the slab, and long-term stability needs.
