Our seawall repair method works by injecting a highly dense expanding geotechnical polyurethane behind the seawall or bulkhead and into the loose soils. The polyurethane expands and compacts the loose soil to create a dense matrix of polyurethane and soil. In addition, the polyurethane will seal any cracks against further water intrusion and stabilize the base of the wall against water intrusion and erosion. Our polyurethane foam is not just a cost-effective solution, it’s also extremely strong and durable. 56 pounds of our poly-foam is equal to 3,600 pounds of concrete!