Neither method is better in every case. A camera inspection decides. Lining works when the old pipe is still in line and mostly intact. Digging is needed when the pipe is collapsed, badly sagging or has a broken section that must be replaced.
Get the camera look first, ask what the picture shows, and do not agree to either method on a guess. Replacement of sewer piping is not ordinary maintenance in New Jersey, so ask the code office about permits.
Why the camera comes before any decision
A sewer lateral is out of sight, so the only way to choose a repair is to look. A camera shows root intrusion, offset joints, cracks, scale, a bellied section and collapses. It also tells us how long the damaged stretch is and where it sits relative to the house and street.
Our sewer camera inspection records the run so you can see the same image we do. If someone proposes a trench or a liner without showing you the pipe, ask them to show it.
The three main approaches side by side
These are the common options for a failing lateral.
| Method | How it works | Best fit | Limits |
|---|---|---|---|
| Cleaning only | Cable or water jet removes roots and buildup. | Pipe is sound and the blockage is the problem. | Roots return if the pipe is open or cracked. |
| Cured-in-place lining | A resin liner is pulled into the cleaned pipe and cured. | Cracks, small leaks and root entry at joints. | Needs a clear, continuous pipe and does not fix a collapse. |
| Pipe bursting | A new pipe is pulled through as the old one breaks apart. | Pipe is failed but still in a straight path. | Needs access pits and can disturb nearby lines. |
| Open trench replacement. | The pipe is dug up and replaced. | Collapse, major sag or broken pieces. | Digs up yard, driveway or sidewalk. |
When lining makes sense
Lining suits an old pipe that still runs in a straight path but leaks at joints or lets roots in. After cleaning, a liner makes a new smooth wall inside the old pipe. It avoids a long trench and limits damage to landscaping.
Lining is a rehabilitation of the existing pipe. It cannot restore a pipe that has lost its shape, and it slightly reduces the inside diameter, which matters on a small line.
When digging is the honest answer
We would rather tell you straight than line something that will fail again.
- A collapsed section. The liner cannot pass through, and the break must be replaced.
- A bellied section holding water. A liner follows the sag and the water stays.
- A severe offset joint. The pipe parts and soil enters.
- Crushed pipe under a driveway or heavy load. The structure needs replacing.
- A connection that needs to be rebuilt. Some fittings cannot be lined.
A short dig to fix one failed section can be a better value than lining a long pipe that is otherwise sound. The camera and the length of the damage decide it.
Roots: the common reason people reach this decision
Roots enter through small cracks and joints, then grow into thick mats that catch paper and grease. Cutting them clears flow but does not seal the opening. If the pipe stays open, they return.
Lining seals those openings so roots lose their entry. Cleaning with a cable or our hydro jetting service is the step before lining, since the liner needs a clean surface.