Key takeaways
- Industry sources commonly cite design lives of around 50 years
- Installation quality is the biggest factor
- Proper cleaning and cure matter
- Lining is a repair of the pipe, not of the surrounding soil
Design life
Standards bodies and manufacturers commonly describe a design life of around 50 years for CIPP liners, based on testing. Real-world results depend on installation quality and conditions.
What affects it
Pipe cleaning, liner fit, cure quality and the structural condition of the old pipe all matter. So does how the line is used and maintained.
What lining does not fix
It will not correct a belly or a collapsed section, and it does not stop soil from moving. Choosing the right repair matters more than the product.
Documentation
Ask for before-and-after video and the liner specifications. Good contractors provide both.
Keeping it healthy
Avoid flushing wipes and grease. Occasional jetting keeps debris from building up.
Quick answers
Is there a warranty?
Warranty terms come from the contractor and the liner manufacturer. Ask for them in writing.
Can a lined pipe be cleaned later?
Yes. Routine cleaning and jetting are fine for lined pipes.
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