(618) 444-9976 24/7 emergency sewer service · St. Clair and Madison counties
Trenchless Sewer Repair job by Dig N Drain: cured-in-place lining

06 · Trenchless Sewer Repair

Trenchless sewer repair, if your pipe is a good fit

Trenchless repair fixes a sewer from the inside through small access pits, so the driveway, the patio and the old maple stay where they are. It does not suit every line, and the camera inspection is how we find out whether yours is one.

Three ways to fix a pipe without a trench

Pipe lining, or cured-in-place pipe: a flexible liner coated with epoxy is pulled into the old pipe and hardened in place, leaving a new pipe inside the old one. It suits cracks, leaking joints and corrosion.

Pipe bursting: a new pipe is pulled through the old one while the old pipe is broken apart around it. It suits lines too deteriorated to line.

Spot repair: a short trenchless repair over one bad joint or crack, when the rest of the pipe is in good shape. The material, the damage and where the pipe runs decide which one fits.

When we will tell you to dig instead

The industry’s own guidance is clear about the limits. NASSCO, the pipeline rehabilitation trade group, says a joint offset that cuts the pipe’s cross-section by 40 percent or more has to be repaired before a liner goes in. A liner also follows the line and grade it is given, so a belly that holds water today still holds water inside the new liner.

A lateral that is collapsed, sagging, or crowded by other utilities is usually a dig. If that is your line, we will say so before you spend money on lining.

Honest evaluation – only recommended when appropriate.

Dig N Drain

What trenchless leaves alone

  • Driveways and sidewalks
  • Patios and hardscape
  • Mature trees and landscaping
  • Fences
  • Parking lots

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(618) 444-9976

Answered 24/7. Scope and price before any work starts.

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How the job goes

What to expect, step by step

  1. 01Camera and measure

    Film the line, measure offsets and sags, check the material.

  2. 02Decide honestly

    Lining, bursting, a spot repair, or a dig if trenchless will not hold.

  3. 03Small access pits

    Open only what the method needs at each end.

  4. 04Line or burst

    Install the new pipe from the inside.

  5. 05Camera after

    Run the camera through the finished pipe.

Our work

Photos from our own jobs

White PVC clean-out riser on a new sewer line running along the side of a house
A clean-out riser: the access point every camera run starts from.

Answers

Questions about trenchless sewer repair

How much does trenchless sewer repair cost?

Trenchless repair is priced on the length of pipe being lined or burst, its diameter and the access pits it needs. It pays off when the pipe runs under a driveway, patio or mature trees that would cost more to tear out and replace. You get the price after the camera inspection.

Can trenchless repair fix a belly in a sewer line?

No. A liner follows the line and grade of the old pipe, so a belly that holds water now will hold water inside the liner. A sag has to be dug up and re-laid at the right slope. The camera shows whether your line has one before you pay for lining.

What is the difference between pipe lining and pipe bursting?

Lining puts a new epoxy pipe inside the old one, so the old pipe has to be round enough to hold it. Bursting breaks the old pipe apart and pulls a new pipe through the same path, so it can replace a line too far gone to line. Both need only small access pits.

Is my sewer line a candidate for trenchless repair?

It depends on what the camera shows. NASSCO’s guidance says an offset joint cutting the cross-section by 40 percent or more must be repaired before lining, and a collapsed or sagging line usually has to be dug. A cracked, leaking or rooted line with good grade is often a strong candidate.

Is trenchless sewer repair cheaper than digging?

Not always. It saves the cost of tearing out and replacing whatever sits on top of the pipe, which matters under a driveway or patio. Under open lawn, a short dig can cost the same or less. When both methods will work, we price both and tell you which one we would choose.

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