Sealing Annular Space

While liners, when properly designed and constructed, will stabilize the structural integrity of the host pipe, even close-fit liners will not eliminate the problem of infiltration. Tests have shown that infiltration from joints and cracks eventually re-enters the system at lateral cut-outs, connections to manholes, an/or defects in the liner.

The use of Avanti International’s Chemical Grout with a mainline/lateral packer will seal both the annular space between the host pipe and the liner and any leaks at the lateral connection.


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