When you need trenchless sewer repair
- Root intrusion at many joints along the line
- Cracked clay or corroded cast iron that still holds its shape (lining)
- Pipe that needs full replacement under a driveway, patio or mature landscaping (bursting)
- Lines where excavation would disturb trees or concrete
How it works
- Camera inspection and cleaning (often hydro jetting) to prepare the pipe.
- Lining: a felt or fiberglass liner saturated with resin is inverted or pulled into the pipe and cured with hot water, steam or UV light. Branch connections are reopened with a cutter.
- Bursting: a cable pulls a cone-shaped head through the old pipe, fracturing it outward while a new HDPE pipe follows behind.
- Final camera inspection to verify the result.
How it compares
| Item | CIPP lining | Pipe bursting | Open trench |
|---|---|---|---|
| Digging | Usually 0–2 small pits | 2 pits | Full trench |
| Old pipe | Stays in place as host | Fractured and displaced | Removed |
| Fixes sags | No | Limited | Yes |
| Collapsed pipe | No | Sometimes | Yes |
| Surface disruption | Lowest | Low | Highest |
Limits and when it’s not the right fix
- Lining needs a pipe that is not fully collapsed; it follows the existing path, including sags.
- Lining slightly reduces internal diameter.
- Bursting needs entry and exit pits and can be difficult near other utilities.
- Neither method corrects a significant belly; that needs excavation.
- Local codes and inspection requirements vary.
What affects the cost
We don’t publish national price figures because real quotes vary too much by region, access and the condition of your system. These are the factors that move the price:
- Length and diameter of the line
- Number of branch connections to reinstate
- Pit locations and depth
- Pipe preparation needed
- Permits and inspections
Ask for a written quote that names the method, materials and any permit or restoration work before work begins.
Trenchless Sewer Repair: common questions
Is trenchless sewer repair as good as replacement?
When the pipe is a good candidate, a properly installed liner or burst replacement can perform comparably to a new trenched pipe. It is not a good fit for collapsed lines or lines with significant grade problems.
What is the difference between pipe lining and pipe bursting?
Lining builds a new pipe inside the old one, leaving the old pipe in place. Bursting breaks the old pipe apart and pulls a new pipe through the same path.
Can trenchless repair fix a sagging sewer line?
Generally not. A liner follows the existing slope, so a belly remains. Correcting a sag requires excavating that section.
Does trenchless sewer repair need a permit?
In many jurisdictions, yes. Requirements vary, and some cities have specific rules for lining materials or inspection.
