Cured In Place Pipe Lining



CIPP Lining Service


What is Cured-In-Place Pipe Lining?

Cured-In-Place-Pipe (CIPP) Lining has been in use in the United States for the last 35 years. CIPP lining is one of several pipe rehabilitation methods referred to as Trenchless Technologies. It is an approved method and preferred method to rehabilitating cracked, broken and failed sanitary or storm sewer pipes. Lining is less expensive and more efficient than traditional open cut replacement methods, normally installed with little or no surface disruption. CIPP lining process can be used to rehabilitate virtually any type of pipe including; Clay, Cast Iron, PVC, ABS, HDPE, Concrete Pipe or Corrugated Metal Pipe. Since the invention of CIPP lining, millions of linear feet have installed in America alone.
CIPP liners are constructed of diameter specific tubular layer(s) of non-woven polyester felt. A calculated amount of catalyzed thermosetting resin mixture is impregnated into the felt during a process called wet-out. The felt acts as both a resin carrier and adds flexible strength to the finished liner. To install, the CIPP liner is positioned within the host pipe either by “inversion” (air or water) or “pulled” into place. Once in position, the CIPP liner is inflated by air pressure or by a water column to press the material against the host pipe wall. When fully inflated, either outside ambient air, steam or hot water is circulated within the liner to start the thermosetting resin to cure or harden.
Adding to the above, CIPP liners can be designed & manufacture in many ways depending individual project criteria. Pipe Restoration Solutions installs liners for all types of design and application requirements.

CIPP – The Most Used Trenchless Technology
Following the guidelines set forth by ASTM Standards (50 year design life), proper installation of a CIPP liner within a host pipe results in a “New Pipe Within A Pipe”. CIPP liners are designed to be independently structurally strong, not relying on the host pipe for any structural strength contribution. Installation of a CIPP liner minimally reduces the diameter of the host pipe, but the diameter loss is offset by increased flow characteristics of the liner surface material. ASTM sets the Standards for manufacturing & use all types of pipes.
Cured-In-Place Pipe can remedy numerous pipe defects. Root infiltration is virtually eliminated since CIPP liners are “one piece” extending from manhole to manhole to manhole. Single piece liners can reduce or eliminate inflow & infiltration problems. CIPP liners can bridge offset pipe joints or gaps where sections of pipe are missing.

What Size Pipes Can Be Lined
The growth of the CIPP pipe lining industry has been phenomenal in the past 10 years. Pipes from 3″ to 96″ diameters are successfully installed on a daily basis. Plumber & drain cleaners now install CIPP liners within house laterals or pipes located under the floors of buildings to avoid costly excavations.
In the large pipe diameter market, single installations can range up to 1500 linear feet. Installing CIPP liners has become commonplace. Limitations on installations are slowed by the time requirements to reinstate lateral service connection and setup of bypass pumping systems.

When CIPP Lining Is Not An Option

  • When existing pipe has severe pipe deflection (loss of ovality)
  • Where there is a collapse, unless a localized pipe repair is performed
  • Where the requirement is to increase existing pipe capacity
  • Where chemicals can erode or dissolve CIPP liner material
  • Where pipe effluent temperatures can be abnormally high