Slip Lining

Slip lining involves pulling a new pipeline liner inside of an existing, larger diameter host pipe. This trenchless solution can essentially be used to rehabilitate any type of host pipe material no matter how large or small. The new liner is typically installed with a winch but a direction drilling rig or pipe bursting machine can also be used if the alignment is straight. Slip lining is perhaps the least expensive type of trenchless pipeline rehabilitation and is also the quickest that requires a limited amount of technical expertise. The cost of this rehabilitation solution primarily depends on the type of lining system since material pricing can be a significant portion of project cost. 

Winches have the capability of installing over 150 feet per minute of new liner pipe while rod pullers operate at only a fraction of the speed. A variety of liner materials are available that can be used for slip lining and can be deployed quickly. Depending on the application and operating conditions, the annular space (the open cavity between the liner and the interior wall of the host pipe) may need to be grouted to restrict internal liner movement.