How Infiltration Affects CIPP Installation
Cured-in-place pipe (CIPP) installation is made more difficult by active infiltration, which occurs when groundwater seeps through cracks, joints or manholes into sewer pipes. New CIPPs should be tight-fitting and jointless to seal off any possible points of entry for infiltration. Unfortunately, CIPP does not eliminate infiltration from entering the existing host pipe. Infiltration is dangerous to the installation process because too much flow can wash the resin off of the new liner and/or prevent the liner from installing correctly. However, the type of cure used for installation can make a difference in the effects of infiltration.