What pipe lining is
Cured-in-place pipe lining, often called CIPP, uses a flexible tube soaked in resin. The tube is pulled or inverted into the existing sewer line, inflated against the pipe walls and left to harden. Once cured, it forms a smooth, jointless pipe inside the old one, sealing cracks and the joints that roots use to enter.
Because the work happens from access points such as a cleanout or a small pit, there is no trench along the whole run. That is why lining appeals in Fullerton homes where the lateral passes under a driveway, a patio, mature landscaping or the slab of the house itself.
How a lining job usually proceeds
- Inspect and measure.A camera run confirms the pipe's condition, diameter, length and any branch connections.
- Clean the pipe.Roots, scale and debris are removed, often with a jetter or cutting tools, so the liner can bond to a clean surface.
- Prepare the liner.The tube is cut to length and saturated with resin.
- Install and cure.The liner is placed in the pipe and held against the walls while the resin hardens.
- Reopen connections.Any branch lines that join the section are reopened from inside with a cutting tool.
- Verify on camera.A final camera run shows the finished liner, its ends and any reopened connections.
Good and poor candidates for lining
| Pipe condition | Usually a lining candidate? | Why |
|---|---|---|
| Cracked but still round | Often yes | The liner seals the cracks and uses the old pipe as a form |
| Roots at joints | Often yes, after clearing | A jointless liner closes the entry points |
| Scaled or channeled cast iron | Sometimes | Depends on how much wall remains after cleaning |
| Offset joints | Sometimes | Small offsets may be lined; large ones can block the liner |
| Belly holding water | Limited | The liner follows the existing slope, so the sag stays |
| Collapsed or missing sections | Usually no | There is no intact pipe to line; excavation or bursting is needed |
What to confirm before agreeing to lining
Questions to ask about lining
- Why is my pipe a good candidate for lining rather than replacement?
- Is any part of the line collapsed, offset or sagging in a way the liner will not fix?
- How long will the drains be out of use during the work?
- What written guarantee, if any, comes with the liner, and what does it cover?
Common questions
Does lining make the pipe smaller?
Slightly, since the liner adds a layer inside the old pipe. A smooth, jointless surface can offset some of that. Ask the contractor how it affects your line.
Can lining be done under a slab?
Often, if the pipe there is intact enough and there is access. It is one of the reasons lining is considered for slab-on-grade homes.
Is trenchless always less disruptive?
It usually means far less digging, but it still needs access points and drains are out of use for a time. Ask exactly where any pits will go.
General information for Fullerton, not a quote or professional advice. In an emergency, call 911.