Trenchless sewer lining, explained

Trenchless sewer repair is a promise people want to believe: fix the line, leave the patio, skip the excavator in the rose bed. Sometimes that promise is true. Sometimes it is a liner sold into a pipe that cannot hold one. The difference is on the camera, not in the brochure.

This page is general trade education from the owner of the domain SewerLineRescue.com, which is for sale. It does not quote your job. Prices swing with length, depth, access, pavement, and the city you are standing in. Get line-item bids after the video, not before.

What CIPP actually is

Cured-in-place pipe is a felt or fiberglass tube soaked with resin, pulled or inverted into the old sewer, then inflated and cured — with heat, steam, or ultraviolet light, depending on the product. When it cures, it is a new structural pipe sitting inside the old one. The old pipe stays in the ground as a host.

A proper job starts with a clean pipe. Jetting and a mechanical cut of roots come first, then a pre-video that shows the liner has a round place to live. After the cure, laterals that were covered get reinstated — a cutter opens each house branch from inside the new pipe — and a post-video proves those openings and the finish at both ends.

If a proposal skips the pre-video, the reinstatement, or the post-video, it is not a smaller version of the same product. It is a different, worse product.

When a liner is a fit

• The host pipe is cracked, open at joints, or root-cut, but still mostly round.
• Access exists from a cleanout or a small pit, and the line can be cleaned to the far end.
• The grade is acceptable. A liner follows the old pipe, including a belly. It does not lift a sag out of the dirt.
• Diameter changes are planned for. A liner is not magic across a sudden jump in pipe size.

When it is the wrong tool

• The pipe is collapsed or ovaled so far the tube cannot open.
• A severe belly holds standing water that will sit in the new pipe too.
• An offset is large enough that the liner will wrinkle or ridge on the lip and catch debris.
• The failure is a single joint under a sidewalk and a short spot repair would waste less of the yard and the budget.

Spot repair, full-length lining, and open replacement are three different answers. A company that only owns one of them will tend to sell that one. Ask what they would recommend if they also owned a trencher.

Pipe bursting is the other trenchless path

Bursting splits the old pipe outward with a head and pulls a new fused pipe in behind it. The new line does not depend on the old wall. That makes bursting the usual trenchless answer for Orangeburg, for a pipe that is too deformed to line, and for runs where you want a full-diameter replacement rather than a slightly smaller liner. It still needs pits, it can disturb nearby utilities, and it is a poor idea next to fragile structures if the crew cannot tell you what is in the ground.

Lining keeps the path and narrows it a little. Bursting replaces the path. Confusing the two in a contract is how disputes start. The scope should name the method, the product, the length, and what happens if the camera finds a collapse the quote did not include.

Questions worth asking before anyone digs — or doesn’t

• Will I receive the pre-video and the post-video, with distances?
• How are laterals reinstated, and is that in the price?
• What warranty is in writing, and what does it exclude — bellies, roots beyond the liner, city-side failures?
• What is the cure method, and is the resin rated for a sanitary sewer rather than a storm culvert?
• If the pipe will not take a liner, is the fallback price already described, or is that a surprise change order?
• Who pulls the permit, and does the city require a specific product or an inspection of the video?

None of those questions require you to become a plumber. They require the bidder to have done the job before.

The name, if you are the company that owns the rig

CIPP crews and bursting crews spend real money teaching the public a method the public did not have a word for twenty years ago. The phrase people still type and still say is simpler: sewer line, and someone to rescue it. SewerLineRescue.com is that phrase on a .com, and it isfor sale by the owner. The guides on this site, includinghow a failing line shows up, are here so the name has a subject. They are not a bid for your house.