What hydro jetting does that a cable does not
Hydro jetting sends high-pressure water through a hose and a nozzle that points backward and forward. The jets cut grease, soften scale and flush debris toward the sewer. A cable punches a hole through the middle of a clog, but the jet cleans the pipe wall all around.
Because a backed-up main line can turn into an emergency overnight, we run jetting calls 24/7. Call the dispatcher, say whether the line has already snaked and failed, and ask whether jetting is likely to help. The answer depends on the pipe, so the plumber confirms it with a camera first.
When a stubborn backup needs jetting right away
If sewage is rising in a basement floor drain after a cable has already failed once, jetting is often the next step. After-hours and weekend calls are normal for this work, because a full main line stops the whole house from using water.
Until the plumber arrives, stop using every fixture and keep people away from the wet floor. Open a window if the smell is strong, and do not use chemical cleaners, since they react with the water and can splash.
- Cable machine got stuck or turned back at a certain distance.
- Roots keep returning every season.
- Grease has built up in a kitchen main line.
- A camera shows heavy scale on the pipe wall.
Main line backed up after a cable failed?
Call the 24/7 line and ask whether hydro jetting is right for your pipe.
How a jetting visit runs
The plumber keeps the job simple and shows you what the line looks like before and after.
- Camera first. A small camera confirms the pipe material and finds cracks, offsets or collapsed sections that jetting could make worse.
- Choose the nozzle. A penetrating nozzle opens a stoppage. A rotating nozzle scours the walls.
- Jet in passes. The plumber works forward and then pulls back, so debris travels toward the sewer instead of settling.
- Camera again. A second pass confirms the full diameter is clear, and you see the footage.
Pipes where jetting is the wrong call
Jetting is powerful, so it does not belong in every pipe. Brittle cast iron, cracked clay and any line with an open joint can be damaged by pressure. A camera inspection tells the plumber which pipes are safe, and a good plumber declines to jet a line that the footage shows is fragile.
If the camera shows a break, you move from cleaning to repair. Our sewer line repair page explains spot repair, relining and replacement, and our sewer inspection page explains what the footage reveals.
Jetting in Derry homes and small businesses
Many older Derry homes have cast iron or clay laterals that gather scale for decades. Roots from mature trees on older lots can enter joints and return after each cable pass. A jet clears the root mass and the scale at the same time, though roots grow back unless the joint is repaired.
Restaurants and shops along Broadway and NH 28 face grease more than roots. Their lines respond well to scheduled jetting. If you manage a small commercial building, ask about a maintenance plan on our commercial plumbing page.
Cable or jet: how to choose
This is a rule of thumb, and the plumber adjusts it for your pipe.
| Situation | Cable usually works | Jetting usually works better |
|---|---|---|
| First clog in a healthy line | Yes | Not needed |
| Clog returns every few weeks | Temporary | Yes, after a camera check |
| Grease buildup in a kitchen line | Partial | Yes |
| Roots at a joint | Cuts roots | Cuts and flushes roots |
| Cracked or fragile pipe | Light cable only | No, repair first |
Hydro Jetting questions in Derry
Yes. The line is open 24/7. If a main line has backed up into your basement, call (603) 815-9179, stop using every fixture and let the dispatcher know whether a cable has already failed. Same-day service is available when the schedule allows.
It is safe for sound pipes and unsafe for fragile ones. That is why the plumber runs a camera before jetting. If the footage shows a crack or a break, the plumber recommends repair instead of pressure.
Many jobs take one to two hours on site, including the before and after camera passes. A long run, heavy roots or a second blockage can add time. The plumber tells you the plan after the first camera pass.
No. Jetting removes the root mass and cleans the pipe, but roots return if a joint still lets them in. A repair or lining closes the entry point, and the camera shows whether that is needed.
The price depends on line length, access to a cleanout, pipe material and how much debris is present. You get a clear price before work starts, and you can ask for the camera findings to see why.
References: ask the Derry code enforcement office (603-432-6148) whether work on a lateral needs a permit, and call 811 before any digging.
Clear the full pipe, not just a small channel
Call any hour for jetting in Derry. A camera check comes before and after.