Sewer pipe lining in Atlanta

The pipe beneath a Atlanta property

Metro Atlanta grew in rings, and the sewer laterals follow those rings. The in-town neighborhoods platted before 1940 were piped with terracotta or vitrified clay in short lengths, a joint every couple of feet, and each joint is a door for roots. The ranch tracts that filled Fulton County from the 1950s through the 1970s were plumbed with cast iron under the slab and clay or cast iron out to the street, and a share of those subdivisions got Orangeburg, a tar-impregnated fiber product that goes soft, bubbles and loses its round profile with age. PVC took over in the 1980s; it does not rust or rot, but a joint can separate and a section can be crushed or sag where the fill was never compacted.

All of it sits in Georgia red clay, a kaolinitic soil that swells when the winter rains soak it and shrinks hard when a dry August bakes it. That cycle works the pipe joints open a fraction at a time. Add the water oaks, willow oaks, magnolias, crepe myrtles and Bradford pears that line older streets, and a lateral that was tight in 1965 has usually been breached somewhere by now. In parts of the metro, granite bedrock sits close enough to the surface that any trench becomes a rock-breaking job.

How a cured-in-place liner works

Cured-in-place pipe, or CIPP, is a new pipe formed inside the failing one. The crew records the line with a camera, then jets it with high-pressure water to strip roots, scale and grease back to the pipe wall. A felt or fiberglass tube wet out with resin is pulled or inverted into the cleaned pipe from the cleanout, pressed to the wall by air or water pressure, and hardened with steam, circulating hot water or UV light into one rigid, continuous pipe. Roots have no joint left to probe, groundwater has nothing to seep through, and the smooth bore moves waste better than the rough clay or scaled iron did.

Because the liner goes in through the existing cleanout or one small access pit, the slab stays intact, the crawlspace is not excavated, and the sidewalk and road are untouched. That matters most for the run under the public right-of-way, where open-cut work means a separate permit, traffic control and a paving patch. the verified installer covering Atlanta handles lining throughout metro Atlanta and north Georgia.

When the line should be burst instead

A liner can only follow a pipe that still has a shape. When the camera shows a collapsed section, a sag holding water, flattened Orangeburg, or a pipe undersized for the fixtures feeding it, lining would just set the problem in resin. Pipe bursting replaces the lateral along the same path: a cone-shaped head winched between two small pits fractures the old pipe outward and drags new high-density polyethylene behind it. Nothing between the pits is disturbed, and the new pipe can be one size larger than the old one. A side-by-side account of both methods is at the CIPP reference.

The inspection is not optional

Every trenchless job worth doing in Fulton County begins with a recorded camera run and ends with another one. The first locates each defect by distance from the cleanout and marks its depth with a sonde; the second, after the cure, proves the new pipe is sound from end to end. Ask for both recordings and a written finding before anyone quotes a repair, and expect the quote to cite the method and the footage behind it. Anyone who names the fix before the camera has been in the pipe is selling, not diagnosing. The standards a verified installer is held to are listed at the verified installer directory.

What the day looks like

Lining a house lateral in Atlanta normally takes one working day, in any season: cleaning and measuring first, then the liner goes in and cures around midday, reinstatement of branch connections and the final video in the afternoon. Expect the water to be off for a few hours while the resin hardens; the crew tells you the window beforehand. On low-lying lots, the same visit is a good time to install a backwater valve, so a main surcharged by a summer thunderstorm cannot send sewage back toward the house. The cured liner comes with a written warranty and a fifty-year design life, which is the document a buyer, a lender or a home inspector will ask to see later.