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Since it’s inception in 1971, CIPP is most utilized method of trenchless technology to repair storm water lines, process lines, and sanitary sewers without excavation. With founders of the CIPP industry on board, SAK's experience is unparalleled and spans over 50 years and 30 countries!

The CIPP liner consists of a resin-saturated felt tube with an impermeable layer of polyurethane coating on the outside. Working above ground from one manhole to the next, SAK inserts CIPP into the entrance of an existing pipeline and then uses water pressure to turn it inside out. Inverting the tube positions the resin on the outside and the smooth polyurethane on the inside - similar to pulling a sock inside out. Hot water or steam is circulated through the tube to cure the resin, sealing the felt liner tightly to the inside of the host pipe and curing it in place (hence, CIPP). Now turned outside-in, the liner’s polyurethane coating forms a smooth, strong, and long-lasting pipe-within-a-pipe. Installation is trenchless, allowing communities to avoid the high cost, hassle, and risk of open-trench construction in populated areas. Designed for pipes from 6 to 96 inches in diameter, CIPP is a proven solution for your sewer system rehabilitation needs.


Aging sanitary and stormwater systems endanger cities' economic, public, and environmental well-being nationwide. But for too many cash-strapped communities, the cost in time, money, and hassle to dig up and replace pipeline can outweigh the benefits. With our innovative CIPP technology, SAK has saved communities millions of dollars by restoring pipeline instead of replacing it.

  • Efficient: Lower maintenance costs. Raised pressure and flow capacity. Renewed structural capacity. CIPP’s strong, smooth “pipe-within-a-pipe” makes your system more efficient.

  • Strong: Jointless from one manhole to the next, CIPP reduces groundwater infiltration into sewer mains and prevents sewage exfiltration through seams or cracks. And CIPP is corrosion-resistant to extend the life of your pipeline for up to 100 years.

  • Accessible: CIPP’s seamless design allows end-to-end installation in hard-to-reach locations under bridges and roadways, along waterways, through rough terrain, and in urban and historic landscapes with minimal disruption to existing infrastructure. 

  • Community-Friendly: Safer and faster than traditional open-cut methods, CIPP installation requires little, if any, excavation, minimizing the need for traffic detours or service interruptions. 

  • Affordable: Costing 20 to 40 percent less upfront than open trench rehabilitation, CIPP also saves money in the long run by preventing pipeline breaks, reducing treatment and pumping costs, and minimizing the need for future intervention or maintenance.



From the launch of CIPP technology 30 years ago through tens of millions of feet of pipeline rehabilitation, members of the SAK team have led the industry in managing and installing CIPP. With some of the most experienced and respected leaders in underground construction, we bring a level of expertise and customer service you won’t find with other pipeline contractors.


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