Sewer pipe lining in Boston

What is under a Boston house

The housing stock in Boston runs from the 1880s to last year, and the sewer laterals under it tell the same story. The oldest neighborhoods drain through vitrified clay or even brick-lined lines laid in short lengths with mortared joints, more than a century ago. Houses from the 1920s through the 1960s have clay or cast iron outside and cast iron under the basement floor; a surprising number of postwar homes in Suffolk County were plumbed with Orangeburg, a tar-impregnated fiber pipe that softens and goes oval with age. Everything built since the 1970s uses PVC, which does not corrode but can be crushed, bellied or pulled apart at a joint. Then there is the New England ground itself: four feet of frost every winter, heavy clay in the valleys, ledge and glacial till on the hills, and the maples and oaks whose roots have had generations to find every open joint.

How cured-in-place lining rebuilds the line

Cured-in-place pipe lining, CIPP, builds a new pipe inside the old one without removing it. The crew runs a camera through the lateral, cleans it with a hydro jetter until the wall is bare, and pulls or inverts a felt or fiberglass tube saturated with resin into the cleaned pipe. Air or water pressure presses the tube to the wall, and hot water, steam or ultraviolet light cures the resin into a hard, jointless liner. The old clay or cast iron becomes a mold; the liner is the pipe from then on. Roots have no joint to enter, groundwater has no crack to infiltrate, and the smooth wall carries more flow than the rough, scaled pipe it replaced.

All of it happens through the existing cleanout in the basement or a small access point if the house has none. The lawn, the driveway, the front walk, the basement slab and the public street stay where they are. For the section of lateral under the sidewalk and the road, lining is the difference between a one-day job and a street-opening permit, a police detail, trench plates and a paving patch. the CIPP Verified installer covering Boston is the verified installer covering Boston.

When bursting is the right answer instead

A liner needs a host pipe that still has its shape. If the camera finds a collapsed section, a belly holding standing water, Orangeburg that has gone flat, or a line too small for the house, lining is not the answer and a good contractor will say so. Pipe bursting replaces the line instead: a bursting head pulled through the old pipe from a pit at each end splits it outward while new high-density polyethylene pipe follows behind, and the yard between the pits is never opened. The methods are explained side by side at the CIPP installer directory.

Why the camera comes first

Every trenchless job in Suffolk County starts and ends with video. The first pass finds the defects and marks their distance and depth; the second, after the cure, proves the pipe is whole. You should receive both recordings and a written finding before any repair is quoted, and the quote should name the method and the footage it rests on. A contractor who proposes a method before the camera has been in the line is guessing with your money. For what a verified installer is expected to show, find a verified lining contractor is the reference the network uses.

What to expect on the day

A residential liner in Boston is normally a one-day job, in any season: setup and cleaning in the morning, the liner in and curing by midday, cured and reinstated by afternoon, with the final video and the inspection scheduled around that. Water is off for a few hours during the cure, and you are told the window in advance. The liner carries a written warranty and is rated for a fifty-year service life, which is also what a buyer or a lender wants to see when the house sells.