CIPP is installed using a variety of methods, depending on the type of pipe being repaired. For sewer lines, using manholes (structures) as access points, the CIPP material is either pulled in place or inverted. The CIPP material is then inverted and expanded (like moving a sock inside out), creating a new pipe inside the old one. CIPP can also be installed using air or water pressure. This method involves feeding the CIPP material through the existing pipe and then inflating it. Once the CIPP material is in place, it is cured using heat or ultraviolet light.