Can a Broken Sewer Pipe Be Relined?
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Verify before you rely on this guide. This is general educational information, current as of October 11, 2026. Codes, permit rules, fees, prices, product warranties and industry practices change, and every property is different. You must confirm up-to-date information with the City of Pasadena or your local building authority, a licensed plumbing or sewer contractor, and the sources listed in this guide before making any decision.
Yes, some broken sewer pipes can be relined—if the remaining route and the specific defect allow a liner to be installed correctly. Cracks, certain joint gaps, and localized deterioration do not necessarily require excavating an entire line. Severe collapse, major displacement, and inappropriate pipe grade change the answer.
How relining repairs a damaged pipe
Cured-in-place pipe lining (CIPP) positions a resin-impregnated liner inside an existing pipe and cures it to form a new internal tube. For eligible runs, it can cover qualifying cracks and leaking joints and reduce root-entry paths.
Unlike pipe bursting, it does not replace the old pipe's route. The host pipe remains outside the new liner, and existing line and grade generally remain in place. If the original defect is a true belly, lining cannot be treated as an automatic grade repair.
Which breaks may be suitable?
A pipe with limited cracking, a manageable joint separation, or other selected defects may be a candidate if it remains passable, measurable, and installable. The contractor also needs adequate diameter, access, cleaning capability, and a plan for branch connections.
An apparent break on CCTV does not prove the entire pipe is beyond repair. But suitability is specific to the liner system, defect geometry, and site—not to the word “broken” alone.
Which conditions can prevent lining?
| Condition | Why it is difficult |
|---|---|
| Fully blocked collapse | Liner and preparation tools may not pass |
| Large offset | May obstruct delivery or reduce finished flow area |
| Missing/displaced pipe sections | Route or geometry may be unsuitable |
| Confirmed low spot | Liner generally follows the old grade |
| Inaccessible branch connections | Proper reinstatement may be impractical |
Where damage is localized, a contractor might perform a spot repair before lining the remaining suitable pipe. That adds access and cost but can still avoid a full-length open trench.
For the broader repair decision, see broken sewer: repair or replace.
What does the sewer camera actually establish?
A camera provides views of the accessible interior: cracks, root intrusion, apparent joint movement, restrictions, and water. It cannot view the soil outside the pipe, measure residual wall strength, or directly measure gravity slope. A locator may help mark the approximate underground route and depth.
If a proposal relies on a claim that the soil fully supports a broken pipe or that its grade is satisfactory, ask what additional evidence supports that assessment.
What happens before and during lining?
Technicians inspect, clean, and measure the proposed repair reach. Root masses, scale, debris, and obstructions must be handled using methods compatible with the old material. They select the liner and cure process for the project and position the liner through suitable access.
The contractor then cures the liner according to the selected system, reopens branches where needed, and performs specified verification. The new liner is not accepted simply because it looks smooth on a camera; installation records and any required additional tests matter.
Read the complete step-by-step lining guide.
Is relining cheaper than replacement?
Sometimes it reduces excavation and surface restoration, but a severely damaged section may need preparatory excavation, and specialized lining has its own cost. A short break beneath easy-to-reach soil may be simpler to replace. Compare technically suitable scopes with the same restored finish.
The estimate should identify liner length, diameter, preparation, access, branch connections, testing, permits, warranty and exclusions—not just a price per foot.
What should you ask before agreeing?
Have the contractor point to each defect on the inspection, mark the proposed repair boundaries, explain any uninspected reach, and describe what the liner will physically correct. Ask how it will handle remaining offsets, grade concerns, and connections.
Example: two “broken pipe” diagnoses
One inspection shows a long but mostly continuous clay line with several visible cracks and manageable joints. A company may reasonably investigate whether the selected CIPP system can rehabilitate that run without opening the whole yard.
Another inspection shows an abrupt pipe displacement and debris filling the channel, leaving no passage for cleaning or liner equipment. That condition may require access and reconstruction before any lining of the remaining pipe.
Both homeowners were told their pipe was “broken,” but they do not have the same repair options. Ask for the recording and an explanation of what the liner would do at the worst defect. That question often makes the real difference between a considered rehabilitation plan and an attractive but impractical promise.
Bottom line: Relining a broken sewer is a real option when geometry and installation conditions permit. It does not turn a completely missing or badly displaced route into a level, supported pipe by itself.