One of the biggest advantages of this technique is the fact that repairs can be completed by accessing the pipe through small openings such as manholes. Even such small access ports allow the crew and equipment to pass through; once inside the pipe, the equipment can be re-assembled by the workers.
This makes this technique a truly trenchless technology, requiring zero cutting or removing of soil. Clearly, this approach offers a tremendous advantage when pipelines in congested populated areas require renewal.
In some cases, it may be more efficient to saturate the rolls of fabric outside the pipe and pass it into the pipe through the access ports. Inside the pipe, crew can deliver the rolls of epoxy-saturated fabric to the installation team.