Symptoms
- More than one fixture draining slowly, and the lowest first
- Gurgling from a shower or floor drain when a toilet is flushed
- Sewage smell in the yard or around a cleanout
- Patches of unusually lush grass along the line’s run
Diagnosis before digging
A camera survey is not optional here. It distinguishes a soft blockage from root intrusion, a belly, an offset joint, and a collapse - and those have completely different fixes and completely different costs. Anyone proposing excavation without having looked is guessing with your foundation.
The repair options
Cabling or jetting clears blockages and cuts roots, but does not fix the defect that let them in.
Cured-in-place lining pulls a resin liner through the existing pipe and cures it, creating a new pipe inside the old. Minimal digging.
Pipe bursting pulls a new pipe through while fragmenting the old one. Needs access pits at each end.
Open excavation is the fallback when the line is collapsed, badly bellied, or too shallow to work with.
Common questions
How do I know the problem is the main line and not one fixture?
Multiple fixtures back up at once, and the lowest one in the house goes first. If flushing a toilet makes a shower gurgle, the shared line is the problem.
Is trenchless repair always possible?
No. Lining and pipe bursting need the existing pipe to be intact enough to work with. A fully collapsed section, or a severe belly, generally means excavation.