What are the most effective methods for concrete foundation repair?

The most effective concrete foundation repair method depends on the type of foundation (slab, pier-and-beam), soil conditions, and extent of damage. For concrete slab foundations common in Houston these are the top proven methods:

• Best for: Severe settlement or unstable clay soils.
• How it works: Steel shafts are driven deep into stable soil or bedrock, then hydraulic jacks lift the foundation.
• Pros: Long-lasting, works in most soil types, minimal future movement.
• Cons: Higher cost than other options.

• Best for: Moderate settlement in clay-rich soil.
• How it works: Precast concrete cylinders are driven into the soil under the foundation.
• Pros: More affordable than steel piers, effective for many homes.
• Cons: Not as deep or durable as steel in some soil conditions.

• Best for: Light structures, unstable soils, or areas where driving straight piers is difficult.
• How it works: Screw-like steel shafts are twisted into the soil and used to lift the slab.
• Pros: Quick installation, works in many soil types, minimal disturbance.
• Cons: Not ideal for very heavy structures.

• Best for: Minor settling or sinking slabs.
• How it works: Cement slurry (mudjacking) or polyurethane foam (polyjacking) is pumped under the slab to raise it.
• Pros: Cost-effective for small repairs, fast results.
• Cons: Not for severe structural issues, may need redoing if soil keeps shifting.

• Best for: Non-structural cracks or water leaks.
• How it works: Fills and seals cracks to prevent water intrusion and restore some strength.
• Pros: Quick, inexpensive, minimal disruption.
• Cons: Cosmetic or sealing only does not correct settlement.

In Houston’s expansive clay soil, the most effective long-term solution is usually steel piers or helical piers, because they reach stable ground below the active soil layer. Slabjacking and crack injection work well for minor or cosmetic issues, but won’t stop ongoing settlement.