Understanding the Material Behind Modern Concrete Raising Polyurethane is a versatile, high-performance material used in a wide range of applications, but when it comes to raising and leveling sunken concrete, it becomes something even more remarkable. At Acme Concrete Raising & Repair, polyurethane foam is the key component in our concrete lifting service—a method that’s […] The post What Is Polyurethane Foam? appeared first on Acme Concrete Raising & Repair Inc..