This Clementon, NJ homeowner contacted Quality 1st Basement Systems after discovering their concrete patio was sinking. Our System Design Specialist, Chris Bowe, inspected the patio and suggested our Polylevel Injection would be the perfect repair method. PolyLevel is a more powerful solution, because it is waterproof, environmentally friendly, and takes fifteen minutes to recover. The repair was done by our foreman, Victor Leon, and crew.