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CIPP (Cured In Place Pipe) Lining - polyester sock vs epoxy spray?

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Dear all, thanks for reading this.


I'm curious to learn more from experts or users who have experience of using CIPP (Cured In Place Pipe) Lining. It looks like there might be at least two different ways to do it. One is with polyester sock (baloon), and the other is using epoxy spray. Which one would be better, and their pricing? Thanks!


Here are two vidoes shows their differences. According to ChatGPT, it seems that epoxy spray is a newer technology? Thanks!


Polyester sock: https://youtu.be/LFIcRlAOFw0?si=hic1Po_jN6QOQK0R


Epoxy Spray: https://youtu.be/qiL6Q5f6LjU?si=EwhB679oM5KG95NP


General animation about how CIPP Lining work: https://youtu.be/VCSVLmy8e-U?si=nsjbJizBVNafvcL8

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