Cured In Place Pipe (CIPP) Lining Eliminates Sewer Pipe Replacement

You probably have seen many streets in your neighborhood completely torn up while the City replaces broken sewer pipes. Did you know in most cases all of that disruption and money spent is not necessary?

There is an alternative called cured in place pipe (CIPP) lining that allows pipes to be repaired without digging them up. Pipes can be lined with different materials then cured in place to form a seal inside the pipe. With fiberglass pipe lining, the pipe will be good for another 50 years at a minimum and the cost is about two thirds the cost of replacing a pipe.

There are several CIPP products in the U.S. market including PVC, felt and fiberglass liners. Fiberglass pipe liner exceeds the strength and curing speed of any of the other products. It is cured with ultraviolet light and goes far beyond other products in strength, reliability, speed of installation and environmental impact. It is the most cost effective in the rehabilitation of pipe infrastructure worldwide.

UV light curing technology has been around for decades. Ten years ago it was introduced into the German CIPP marketplace as an alternative to heat cured felt lining. Since that time it has grown to dominate the market, and felt lining has steadily lost favor.

Fiberglass lining does not shrink. It is also environmentally friendly because it is UV cured and not cured with steam or hot water which produces styrene-laced water, a by-product of using felt liners.

How is the pipe lining done? In the case of fiberglass CIPP lining, the broken pipe is cleaned and a robotic camera is run through the pipe noting any issues that may need to be addressed before the lining is installed. A pre-liner is first pulled into the pipe then the fiberglass liner is pulled inside that. The liner is then inflated and the UV light curing device is pulled through via a computer which controls the speed, temperature and pressure of the process carefully monitoring all steps.

When the cure is complete, the ends of the liner are trimmed and a cutter is inserted and precision cuts are made at each pipe feeding into the main. A length of 300 feet of 8 inch UV CIPP liner can be cured in 50 minutes - compare that to digging up a whole street.