FAQs

Get answers to some of our common questions.

What is Cured-in-Place Pipe Technology?

Cured-in-Place pipe (CIPP) technology allows for the renewal of damaged underground wastewater and storm sewer pipe without excavation. In the past, damaged pipes were excavated and replaced. With CIPP technology, a fabric liner is saturated with resin and inserted into the pipe. Hot water, steam or UV light is then introduced through the sleeve, which cures the resin. Ultraviolet light, hot water or steam is then introduced through the liner, which cures the resin.

Why is CIPP better than pipe replacement?

CIPP is a no-dig technology, which means that the pipe can be salvaged without the hassles of rerouting traffic and closing streets. This is especially beneficial in urban and downtown areas where altering traffic patterns can cause lengthy delays. By eliminating the excavation phase, projects can also be completed up to five times faster, and at 40 to 50 percent less cost.

Why is Inliner®'s technology superior to other CIPP treatments?

Inliner Technologies has two patented features that offer customers a superior result: ResinGuard™ and StretchGuard™. ResinGuard™ is a patented impermeable membrane that protects the felt from resin washout, drag-off, squeeze-out and contamination, and yet still allows the resin system to form a mechanical lock with the host pipe. When the inner felt is protected with this membrane, the pipe maintains a more uniform thickness, which can actually result in an increase in the structural capacity of the pipe because of less loss from migration during processing (or manufacturing). StretchGuard™ tubes minimize the stretching that occurs when a liner is pulled or inverted, assuring even further a uniform, maintained thickness – which ultimately assures adherence to the design's finished parameters. The Inliner Technologies method can be used to renew a whole range of pipes including sewer, raw water, cooling water, and process effluent systems in diameters from 4 to 120 inches.

Where can Inliner Technologies products be used?

The CIPP method of pipe renewal is a viable option for communities everywhere, and it is on the approved list of products in hundreds of municipalities and sewer districts throughout North America. Many large industrial facilities also view the CIPP method as a preferred method of rehabilitation of their damaged and/or corroded pipes. It is applicable for round, elliptical, rectangular arch, and egg-shaped cross-sections.

How long do cured-in-place pipes last?

Inliner® products are designed to withstand continuous service in corrosive environments for up to 50 years (or longer).

How reliable is this technology?

The CIPP technology has undergone extensive laboratory testing, field-testing, and thousands of installations worldwide. Combining highly trained installation teams with proven methods and materials, Inliner Technologies ensures that the end product meets the design criteria as specified.