What Is Pipe Lining?
Pipe lining is a trenchless sewer repair method that creates a new inner surface inside a damaged pipe. A flexible liner coated with resin goes through the existing pipe and is shaped against its walls. The resin hardens in place, sealing cracks and restoring flow without removing the full pipe from the ground.
Quick Facts About Pipe Lining
Category
Trenchless sewer repair method
Used for
Cracked or worn sewer pipes
Common confusion
Different from pipe bursting
Also called
Cured-In-Place Pipe, Sewer pipe lining
Often discussed with
Trenchless Sewer Repair, Sewer Camera Inspection
Key Takeaways About Pipe Lining
- Pipe lining forms a new inner surface inside an existing sewer pipe.
- The method can reduce digging when the old pipe remains open.
- Pipe lining is not the same as pipe bursting.
How Pipe Lining Works
Pipe lining starts with an inspection of the existing sewer pipe. The pipe must have enough open space for the liner to pass through. Cleaning removes roots, buildup, and loose material that could block the work.
Related glossary terms: Pipe Bursting, Pipe Sleeve, Root Intrusion.
A flexible liner receives a resin coating before placement. The liner moves through the damaged section and presses against the pipe walls. Heat, air, or another curing method hardens the resin into a smooth inner layer. Access points allow the work to reach the buried pipe with less surface removal.
A sewer camera helps show cracks, roots, offsets, and other conditions before lining begins. Pipe lining does not replace sections that have collapsed or lost their path. A sewer lateral may need separate work if its connection is damaged.
Expert Note
When we assess pipe lining, we inspect the sewer path and check for blockages, breaks, and changes in pipe shape. We also confirm that the liner can reach the damaged area and that openings can be restored after the work. These checks help us match the repair method to the pipe's condition.
Pipe Lining in Practice: A Real-World Example
A sewer pipe under a driveway has cracks and root entry, but the pipe still has a clear path. Pipe lining may place a resin-coated liner inside the pipe, reducing the need to remove the driveway.
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Related Terms
Pipe Bursting
Pipe Bursting is a trenchless sewer repair method that breaks an old buried pipe while pulling…
Pipe Sleeve
A pipe sleeve is a protective tube or opening placed around a pipe where it passes…
Root Intrusion
Root Intrusion is a sewer pipe problem in which tree or shrub roots enter through cracks…
Sewer Camera
A Sewer Camera is a flexible inspection tool with a small camera on its end. A…
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