This category covers all the types of liners that are inserted into the existing pipe from an access point (rather than being created through an application process to the interior surface of the host pipe). These liners may be “loose-fit” (e.g. when slip-lining techniques are used for renovation) or “close-fit” when the lining technique is designed to allow the finished liner to conform closely to the interior surface of the host pipe (with no or minimal annular gap).