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.
CIPP is a non-invasive technique that allows for pipeline rehabilitation without digging. It can be used to fix leaking or damaged pipelines without excavating the site. If necessary, an excavation might still occur, but it's often done through an existing access point like a manhole.