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Chemical grouting usually costs less than ten dollars per foot for average residential lines. That makes it the least expensive rehabilitation method available, and it is also the least disruptive.
CHEMICALGROUT FORMS A WATERPROOF COLLAR AROUND LEAKING PIPES Chemical grouts do not stop sewer leaks by simply filling joint sand cracks. Instead, grouting chemicals are forced into the surrounding soil where they gel with the soil into a waterproof mass which cannot be extruded back into the sewer system. This water-tight collar adheres to the outer surface of the pipe where it will stay indefinitely unless removed by excavation or exposed to the sunlight for long periods of time. If groundwater pressures increase, the collar will be pressed even more tightly against the structure, increasing its ability to stop leaks.  POSITIVEPROOF EVERY STEP OF TEST AND SEAL OPERATION Every step of the test and seal operation can be recorded on video tape to provide a permanent record of the exact condition of the pipeline. Interested parties will be able to observe the position of the packer at each joint, the result of the initial air test, the pressure and amount of grout injected, and the follow-up air test. |
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