Can Polyurethane Foam Stabilize a Settling Home without Underpinning?

Polyurethane foam is generally not recommended for structural foundation stabilization. While it is an effective tool for slab jacking—which involves lifting non-structural concrete like sidewalks, driveways, or interior slabs with less than 2 inches of settlement—it lacks the capacity to support the perimeter foundations or load-bearing walls of a settling home.

For a permanent solution, we utilize foundation underpinning via steel pier systems. The primary differences include:

• Load-Bearing Capacity: Polyurethane foam is typically limited to lighter loads (under 20 tons). In contrast, our Helical Piers provide a load-bearing capacity that can exceed 100 tons per pier.
• Depth and Stability: Foam injection is a shallow correction that may degrade over time, especially in expansive clay or high-moisture soils. Our steel piers transfer the building’s load past unstable surface soils down to competent load-bearing strata or bedrock.
• Engineering Standards: Our Helical Pier Systems and Push Piers are ICC and ISO Certified products with ICC-ES documentation, ensuring they meet the highest industry standards for permanent structural support.

Because every project has unique soil conditions and structural requirements, we recommend a site-specific geotechnical evaluation. We provide Engineering Excellence and Design Support through our network of structural engineers to ensure your repair is built to last.

Note: Consult a structural engineer or our engineering team for project-specific design and installation guidance. Installations must comply with applicable building codes and ICC-ES acceptance criteria (AC358).

• Polyurethane Foam vs Steel Piers Foundation Repair: Comparison Guide