The Different CIPP Curing Methods

CIPP lining is fast becoming one of the most efficient pipe restoration methods due to its prompt turnaround time and lasting results. As the name suggests, the process involves “curing” – a step that is essential in making sure that the pipe liner sets correctly, resulting in a jointless, seamless pipe-within-a-pipe.

As one of the leading providers of trenchless pipe lining in Kihei, HI, Nu Flow South Pacific is knowledgeable when it comes to the various curing techniques that are utilized during CIPP pipe lining. Here’s a quick overview of some of the most widely used curing methods.

Hot Water Curing

Curing using hot water has been the oldest method pipe lining companies have used. Once the liner has been put into place, it’s inflated with cold water; then, the experts circulate hot water into the system. This circulation causes continuous water flow from one part of the liner to the other. They then hold the appropriate water temperature until the resin cures. After that, cold water is circulated to cool the entire liner.

Steam Curing

Another iteration of hot water curing is steam curing. While both curing techniques share similarities, steam curing is much faster because steam produces more heat than water. Steam curing can be used for various purposes, such as epoxy pipe lining. Air pressure is used to inflate and expand the liner; then boilers are used to produce steam. The experts then introduce the steam in the pipes as pressurized air.

UV Light Curing

When it comes to fiberglass liners, UV light curing is the preferred method. A device called UV light train is run through the length of the pipe. The speed is controlled and regulated, and the whole curing process (including temperature) is monitored by a computer.

UV LED Curing

Unlike UV light curing that can only be used on fiberglass lining, UV LED curing can be used for both felt and fiberglass, even including cast iron pipe lining.

Regardless of the method, the objective remains the same – fully functional pipes. Contact Nu Flow South Pacific today to set up an appointment.