Key takeaways
- A 50-year design life is widely cited for CIPP.
- Design life is an engineering basis, not a guarantee.
- Installation quality and the host pipe condition matter most.
- Ask for the warranty terms in writing.
A design life, not a promise
The figure most often quoted for CIPP is a 50-year design life. That comes from long-term testing and engineering standards used to size the liner. It is a design basis, so it says what the liner is engineered to do. It does not guarantee a specific outcome in your pipe.
What affects real-world performance
The biggest factors are how well the pipe was cleaned and prepared, how carefully the liner was installed and cured, and what the host pipe looks like. Resin choice also matters, particularly for hot or chemical flows.
What causes early failure
Poor cleaning, wrinkles or voids from a rushed install, incomplete cure and ignoring active infiltration are the main causes. A camera run after installation catches many of these problems before they become your problem.
Asking the right questions
Ask what standards the installer follows, who does the post-install camera inspection, and what the warranty covers and for how long. Get the final footage and keep it with your records.
Related services
- CIPP Pipe Lining (Cured-In-Place Pipe)
- Post-Lining Camera Verification
- Pipe Condition Assessment Reports
Ready for a firm answer on your own pipe? Try the Pipe Problem Finder or call 800-224-9245 for a free camera inspection.