Sectional Point Repair

What a point repair is

A sectional point repair, also called a spot repair or a short liner, is a cured-in-place liner that is two to twelve feet long instead of the length of the whole run. A fiberglass or felt sleeve saturated with a fast-curing resin is wrapped around an inflatable packer, the packer is pushed or pulled through the pipe from a cleanout or manhole to the exact spot the camera located, and it is inflated so the sleeve presses against the pipe wall over the defect. The resin cures in an hour or two, the packer is deflated and withdrawn, and the sleeve stays: a structural patch bonded over the crack, the open joint, the root intrusion or the leaking connection, with a couple of feet of overlap onto sound pipe on either side. The camera goes through again to confirm.

When one spot is the whole problem

Pipe does not always fail everywhere at once. A clay lateral with a single root intrusion where a street tree found a joint; a PVC line with one cracked fitting at the foundation; a cast iron run with one hole where the bottom rusted through; a concrete storm pipe with one open joint where the ground settled; a connection to the main that leaks groundwater; a hole left by a careless contractor's drill: in each case the rest of the line is round, sound and doing its job, and lining all of it would be paying to fix pipe that is not broken. The camera footage tells the story. If the defects are at one or two spots, point repairs cost a fraction of a full liner; if they are every few feet, a full liner is the better buy.

What it will not fix

A point repair, like any liner, takes the shape it cures in, so it cannot correct a belly or regrade a pipe. It cannot bridge a joint that has stepped sideways by more than a fraction of the pipe's diameter, and it cannot pass a collapse. It is also not the right answer for a pipe with defects every few feet, where the repairs would end up touching and the full liner would have been cheaper. Those lines get a full liner, bursting or an open cut, and the footage makes the case either way.

Where point repairs are used most

• One root intrusion or one open joint in an otherwise sound clay lateral
• A single cracked or separated fitting in a plastic line, often at the foundation wall
• A leaking connection where a lateral meets the main, the spot utilities most often flag on inflow-and-infiltration tests
• A hole from a utility bore, a fence post or a previous repair
• One open joint or eroded section in a concrete storm or sanitary main, repaired from the manhole without bypass pumping the whole reach
• Sealing the ends of a full liner, or repairing a defect found after one was installed

How the job goes

The camera records the line and the defect is located from above with its distance from the access point and its depth. The pipe is jetted clean at the repair spot and, if roots are involved, cut back to the wall. The sleeve is wet out, wrapped onto the packer, and the packer is positioned under camera so the sleeve is centered on the defect. It is inflated, the resin cures, the packer comes out, and the camera confirms. The whole repair, on a residential line, takes a few hours and is done from the cleanout. Multiple repairs on one line are done in sequence the same day.

What drives the price

A point repair is the least expensive trenchless fix when a single defect is the whole problem: it is priced per repair by diameter and access, not per foot of line. Two or three repairs on one run are still usually well below a full liner; beyond that, the arithmetic turns. The camera footage is what makes the comparison, and a verified installer will price both ways if the count is close.

Getting the right fix

The difference between a point repair and a full liner is often a thousand dollars or more on a house, and the only way to know which applies is to see the pipe. Your state page explains what is likely in the ground where you are and whether a verified installer is listed; if none is, the national line finds one for you.

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