What Is Deep Foam Injection?

Deep Foam Injection (DFI) is a ground stabilization technique that involves injecting expanding polyurethane foam deep into the soil to compact loose soils, fill voids, and lift settled structures. The foam expands underground, strengthening weak soil layers without digging or heavy equipment. Unlike traditional lifting methods, deep foam injecting not only restores structural integrity but also prevents future settling, ensuring a long-lasting solution. The lightweight nature of the foam minimizes any additional stress on the soil, addressing the root cause of the sinking rather than merely masking the symptoms.