Cracks or leaks in old cast-iron pipelines allow sewage to seep into groundwater, roots that grow and expand, costly waste of clean water and, eventually, expensive environmental, public infrastructure or property damage.
The Pine Grove Resort in northern Wisconsin had a deteriorated cast iron sewer pipe under a concrete floor. The only option to fix the problem used to be to dig up and replace the pipeline—until now. Trelleborg Pipe Seals, part of the Trelleborg Group, Stockholm, Sweden, installed its first innovative Drainplus Liner 2.0 in the 70-foot sewer pipe beneath the Pine Grove Resort, relining instead of replacing the damaged pipeline.
Trelleborg is known for its engineered polymers, and the Drainplus Liner 2.0, with its heat-resistant silicone coating, is inserted flat into the pipe and is capable of traveling through 90-degree bends. The lining is inflated to fit the pipe. The pipe’s internal diameter can vary, so the next step—steam-curing the liner at 176 degrees Fahrenheit for 45 minutes—shapes the engineered polymer liner to the pipe’s internal dimensions. The resort avoided major construction or business disruption, while achieving structural, leak-tight pipeline rehabilitation.