Slip lining is one of the original methods of trenchless rehabilitation for existing pipelines. In fact, it's been used since the early 1940's. Like its other trenchless rehab counterparts, slip lining will repair leaks and can restore structural stability to an existing pipeline.
Slip lining is completed by installing a smaller, "carrier pipe" into a larger "host pipe". Grout is inserted into the annular space between the two pipes, and then both the upstream and downstream ends are sealed. The most common material used to slip line is high density polyethylene (HDPE), but fiberglass reinforced pipe (FRP) and PVC are also frequently specified.
IPR's slip lining capabilities include the trenchless reinforcement of the following piping materials from 8" - 60" in diameter:
- Non-Reinforced Concrete
- Corrugated Metal
- Reinforced Concrete
- Ductile Iron