CIPP materials depend on the type of the pipe and the materials that your CIPP installation team is most familiar with. There are many different variations on the simple design of CIPP. The materials used may also change depending on the needs of your pipe. For example, the kind of host pipe used may affect the CIPP materials used to repair it. This overview covers some of the most common CIPP materials.
Woven pipe liner
CIPP comes in essentially two parts: the pipe liner, and the materials that eventually harden into the new pipe, fully eclipsing the original liner. This liner may be made of any of several materials. As the liner is eventually surrounded completely by the hardened material, what it’s made of is ultimately less important than the other material. It just has to be stiff enough to keep the wet material in place so that it can harden properly.
Polyester is one of the most common and the cheapest type of pipe liners. The stiff fabric is perfect for holding resin. It’s flexible enough to be threaded into a pipe, but stiff enough to carry a lot of weight. It also has a wide weave. As the pipe liner is impregnated with the resin that will eventually make the pipe, full coverage is an absolute necessity. Fiberglass cloth is another top choice for CIPP materials. This fabric is strong and sturdy, and helps add additional support. Typically, fiberglass cloth is better for very large diameter pipes.
There are other pipe liner materials besides polyester and fiberglass cloth. If your CIPP installation team wants to try a different liner, just ask why. Sometimes a matter as simple as availability is the reason behind going non-standard.
Heat hardened material
The second half of the CIPP materials is the heat hardened material. It goes into the pipe a thick liquid that’s fully impregnated the liner. There, it hardens into a solid pipe. This transformation is made possible with steam, hot air, or UV light. The resulting pipe is strong, stable, and corrosion resistant. It’s also joint less, making it easier for the pipe to stand up to tree roots and the like. Laterals can be installed through cutting the pipe after installation.
The most common resin for CIPP materials is polyester. This versatile plastic has the necessary strength to stand up the pressure of being a pipe. It forms into a smooth, strong pipe with exposure to hot air and UV light. It also hardens fairly quickly. In some cases, if polyester is either impractical or difficult to use, CIPP installation teams may turn to various epoxies. These more glue-like liquids harden in much the same way. The needs of your specific pipe and the availability and price of the materials will determine which specific CIPP materials are used to repair your pipes.
CIPP materials vary according to the needs of the job. There are many combinations that result in high quality pipes. In general, polyester (either in the lining or the resin) is the most common material. Others are used when needed.
What is CIPP Made Of?