How Does Trenchless Replacement Work, and What Does It Cost?

Trenchless replacement fixes a failing sewer line without trenching the whole yard. There are two main methods, and they do different jobs. Here is how each works.

Pipe Bursting

A bursting head is pulled through the old pipe, fracturing it underground while a new seamless HDPE pipe is pulled in behind it. You end up with an entirely new pipe in the same path — needing only two small access pits rather than a continuous trench. It is ideal for collapsed or badly deformed lines.

CIPP Lining

Cured-in-place pipe lining inserts a resin-saturated liner inside the existing pipe, then cures it into a new structural pipe. It is ideal for cracked or root-invaded lines that are still mostly round. There is no new pipe pulled through — the liner becomes the new pipe.

When Trenchless Beats Open Excavation

• The line runs under landscaping, a driveway, or a patio you want to keep
• The defect is widespread rather than a single isolated spot
• Street excavation permits and traffic control would be costly

What Drives the Cost

• Length and depth of the line being replaced or lined
• Method chosen — bursting vs. lining — based on pipe condition
• Number and location of access pits
• Permitting and inspection requirements for your district
• Site conditions — slope, landscaping, hardscape to protect

We never quote trenchless blind. A camera inspection tells us which method fits and lets us price it honestly — repair, lining, or full replacement — before any work begins.