What's included in our trenchless sewer repair in Oklahoma City
Trenchless sewer repair means replacing or renewing a buried sewer line without digging it up end to end. The work happens through one or two small pits, and the rest of your yard stays where it is. A typical job includes:
- Recorded camera inspection. A sewer camera inspection maps the pipe material, defects, depth and any branch connections before we choose a method.
- Line cleaning. Roots, grease and scale are cleared so a liner bonds or a bursting head can travel.
- Access pits. We dig only where the new pipe enters and exits, usually near the foundation and near the connection.
- Pipe bursting or lining. New HDPE pipe is pulled through the old path, or a resin liner is cured inside the existing pipe.
- Reconnection, testing and inspection. We tie in the ends, record the finished line on camera and get the work inspected.
Signs your sewer line may be a trenchless candidate
Trenchless methods work best on lines that are failing but still follow a usable path. Good candidates often show:
- Roots coming back through the same joints after every cleaning
- Cracked or offset clay tile joints along much of the run
- Cast-iron pipe with heavy corrosion but no full collapse
- A line that runs under a driveway, patio, mature trees or a fence you do not want torn out
- Repeat backups that a camera traces to damage spread along the pipe, not one bad spot
If the camera instead finds a single break, a sewer line repair on that one section is often the simpler and cheaper fix.
Pipe Bursting: a new sewer line through the path of the old one
Pipe bursting replaces the old line completely. A cone-shaped bursting head is pulled through the existing pipe, breaking it apart and pushing the fragments into the surrounding soil, while new pipe follows right behind it. When the head reaches the far pit, you have a brand-new line where the old one was.
The plumbing code in Oklahoma has specific rules for this work, and we follow every one of them:
- Size limits. Bursting is limited to gravity drain pipe 6 inches and smaller, and the new pipe must match the old pipe's nominal size.
- Pipe type. The replacement must be HDPE with a standard dimension ratio of 17, meeting ASTM F714.
- Video before and after. The old line must be recorded on camera first, noting cleanouts and connection depths. The finished line is recorded again, and the code official reviews that video before the pressure test.
- Cleanouts. If the old line had no code-compliant cleanouts, they must be added.
Because HDPE is fused into one continuous piece, a burst line has no gasketed joints along its length. That is a big advantage on a property where roots have been the problem for years.
Pipe lining for cracked pipe that still holds its shape
Cured-in-place lining renews the pipe from the inside instead of replacing it. A resin-soaked liner is inserted through a cleanout or small pit, inflated against the old pipe wall and cured in place, leaving a smooth new pipe inside the old one. Lining fits cracked, root-damaged or corroded pipe that is still round and on grade. It does not fix a sag or bridge a missing section, and branch connections have to be reopened after curing.
Trenchless and open-trench methods compared
| Method | Best for | Limits |
| Pipe bursting | Full replacement of a failing line under drives, trees or landscaping | Needs two access pits, same nominal size, 6 inches and smaller |
| Cured-in-place lining | Cracked or root-damaged pipe that is still round and on grade | Cannot fix sags or collapsed sections, and slightly reduces inside diameter |
| Open-trench replacement | Bellies, wrong slope, collapses or very shallow lines | The most digging and surface restoration |
| Spot repair | One break in otherwise sound pipe | The rest of the old line stays in service |
If roots are the only issue and the pipe is still sound, sewer root removal may hold you over until a trenchless replacement fits the budget.
What affects the cost of trenchless sewer replacement
We price the actual job after we have seen the line on camera. The main cost drivers:
- Length and depth. Longer and deeper runs take more pipe and deeper access pits.
- Method. Bursting, lining and open trench each have different material and equipment costs.
- Pipe condition. Heavy roots or scale add cleaning time before lining.
- Branch connections. Each side connection that must be reopened or rebuilt adds work.
- Pit locations. A pit in a flower bed is quicker to restore than one through concrete.
Financing is available for larger sewer replacements.
Trenchless sewer replacement in Oklahoma City: local factors
Many older Oklahoma City homes sit on lots with mature trees, long driveways and laterals made of clay tile or cast iron, which is exactly where trenchless methods earn their keep. The Morton Arboretum notes that older pipes often fail at the joints from age or slight soil movement, and the clay soil common here swells and shrinks with wet and dry seasons. A fused HDPE line has no joints to pull apart.
Oklahoma City amends the state plumbing code in a few places that matter for trenchless work. One local amendment requires cleanouts that serve both directions on drain pipe leaving a building, so we add one during trenchless replacement where it is missing. That cleanout makes the next camera inspection much easier. To learn more about how we work, start at our Oklahoma City plumbing home page.