SLAB FOUNDATION REPAIR
SERVICE OVERVIEW
Slab foundation repair addresses issues like cracks, settling, or heaving in concrete slab foundations, typically caused by soil movement, moisture changes, or poor construction. Common repair methods include underpinning with helical or steel piers, concrete leveling with polyurethane foam (polyjacking), and slabjacking (also called pressure grouting). These methods aim to stabilize the foundation and restore it to its original position.
If you suspect slab foundation issues, we suggest you start with a professional inspection to determine the best approach to repairing the problem. We commonly see the following:
- Settling: Uneven sinking of the foundation due to soil instability or poor soil compaction.
- Cracking: Fractures in the concrete slab, often caused by settling, temperature changes, or improper installation.
- Shifting: Movement of the foundation due to soil expansion and contraction or other external forces.
PLAN AND DETAILS
The evaluation and repair process varies based on the location, damage and underlying cause, but here’s what’s generally involved:
1. Assessment and Diagnosis:
- A professional (structural engineer or foundation specialist) inspects the slab for cracks, unevenness, or signs of movement (e.g., doors sticking, floor slopes).
- Tools like laser levels or soil tests may be used to evaluate the extent of damage and soil conditions.
- Common issues include settlement (sinking due to soil compression) or heaving (lifting due to expansive soils or frost).
2. Common Repair Methods:
- Mudjacking/Slabjacking: Injecting a grout or polyurethane foam mixture under the slab to lift and level it. Suitable for minor settling (1-4 inches). Costs typically range from $500-$2,000 per section.
- Piering (Push Piers or Helical Piers): Steel piers are driven deep into stable soil or bedrock to support and lift the slab. Used for significant settling or unstable soil. Costs range from $1,000-$3,000 per pier, with multiple piers often needed.
- Polyurethane Foam Injection: High-density foam is injected to fill voids and stabilize soil. Less invasive than mudjacking, often costing $500-$1,500 per area.
- Epoxy or Polyurethane Crack Injection: For minor cracks (less than ¼ inch wide), injecting epoxy or polyurethane seals the crack to prevent water infiltration. Costs around $300-$800 per crack.
- Drainage Improvements: Addressing poor drainage (e.g., installing French drains or grading soil) to prevent moisture-related issues. Costs vary widely, $1,000-$5,000 depending on scope.
- Partial or Full Slab Replacement: In severe cases (large cracks or extensive damage), sections or the entire slab may need replacement. Costs can exceed $10,000-$30,000 for full replacement.
3. Preparation and Execution:
- Site Prep: Clear the area, remove flooring (if indoors), and excavate around the slab if needed.
- Repair Process: Depending on the method, contractors may drill holes for injections, install piers, or pour new concrete. Work can take 1-5 days for most repairs.
- Cleanup: Debris removal and site restoration, including patching drilled holes or regrading soil.
4. Post-Repair:
- Monitoring: Check for new cracks or settling over time.
- Maintenance: Ensure proper drainage, fix plumbing leaks promptly, and avoid planting large trees near the foundation to prevent root intrusion.
5. Costs and Considerations:
- Costs depend on damage severity, home size, and location. Average repairs range from $2,000-$15,000, with major projects exceeding $30,000.
- Permits may be required, especially for piering or replacement.
- Hire licensed, insured contractors with experience in foundation repair. Check reviews and get multiple quotes.
6. Preventive Measures:
- Maintain consistent soil moisture with proper irrigation.
- Install root barriers if trees are nearby.
- Regularly inspect for plumbing leaks or drainage issues.
WHY CHOOSE US
With over 15 years experience and a real focus on customer satisfaction, you can rely on us for your next project. We provide a professional renovation and installation services with a real focus on customer satisfaction.