As a trenchless technology, CIPP does not require excavation to rehabilitate a pipeline that is either leaking or structurally unsound. Depending upon design considerations an excavation may be made, but the liner is often installed through a manhole or other existing access point.
As a trenchless method, CIPP enables pipeline repair without excavation for leaks or structural issues. Depending on design requirements, excavation may be undertaken, but the liner is typically inserted via an existing access point such as a manhole.