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Injected through drilled holes in the manhole wall, this product seals leaks and cracks or joints where ramneck is missing. Grouting chemicals are forced through and into the surrounding coil where they gel with the coil to form a water proof mass which can not be pushed back into the sewer system. A water tight collar is formed on the outside of the manhole and if the ground water pressure increases the collar will be pressed more tightly against the structure, increasing its ability to stop leaks. |
