Point Repair

Perma-Liner Point Repair Liner is a non-disruptive method for repairing localized structural problems in an otherwise sound pipe. Using a resin impregnated felt/fiberglass reinforcement with PU/PVC inner coating, this point repair method rehabilitates damaged pipe with diameters from 150-1200 mm and up to 9 metres in length without digging.

The result is a structurally sound, long-lasting and economical alternative to other rehabilitation solutions. Point repairs are generally completed in a few hours without disrupting the flow in the line. Access is gained through the closest manhole where the impregnated liner "tube" is moved into place under constant visual monitoring by an experienced, trained, professional crew. When in place, the point repair is pressed tightly against the inside walls of the host pipe and then cured in place.

Point repairs are most effective in sewers with structural defects due to localized settling, excess loading conditions, an offset joint, corrosion or poor initial construction. While point repairs may stop infiltration if the pipe is already leaking at the location of the repair, it must be understood that they cannot solve infiltration problems throughout the sewer. Groundwater will simply find another location to enter the pipe. The only way to eliminate infiltration is to seal every joint in each mainline section.

BEFORE AFTER

BEFORE REPAIR AFTER REPAIR

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