Polyjacking uses a two part expanding polymer foam. The process to raise the concrete by foam injection requires a 5/8” hole drilled through the slab. The polyurethane is then injected under the slab, which through its expansion stage, results in raising the sunken concrete. The difficulty using foam is to know if the voids are entirely filled in.
- Seeks out weak soils, and during expansion, creates a strong, dense, sub-base
- The material will take the path of least resistance, and will fill in all voided areas
- Will retain its cured shape and form, reducing the possibility of forming new voids or further settlement
- Completely cures within 15 minutes
- Very strong, dense, and lightweight
- Requires much smaller and fewer holes