What Is Pipe Relining and How Does It Work?

Pipe relining repairs your sewer line from the inside without digging a trench, saving your yard, driveway, and landscaping.
Sewer line trench installation and pipe work in progress in New Jersey

How Does Pipe Relining Work?

Pipe relining works by inserting a flexible liner coated with epoxy resin into your existing damaged pipe. The resin hardens and creates a new pipe inside the old one. The result is a smooth, jointless pipe that can last 50 years or more. No trench, no excavation, no torn-up yard.

The technical name is cured-in-place pipe, or CIPP. According to Wikipedia’s CIPP overview, CIPP has been used for decades on municipal systems and is now widely available for residential repairs. The Sewer Kings offers drain relining for homes across South Jersey.

Sewer pipe repair and connection work by The Sewer Kings in South Jersey

What Are the Steps in a Pipe Relining Job?

A pipe relining job follows six steps: camera inspection, pipe cleaning, liner preparation, insertion, curing, and final inspection. The entire process typically takes one day for a residential sewer lateral.

Camera Inspection and Cleaning

Every relining job starts with a CCTV drain survey. A waterproof camera records the condition of the pipe. Then the pipe is cleaned with hydro jetting to remove grease, scale, debris, and roots. Any obstruction left behind can prevent the liner from bonding properly.

Liner Installation and Curing

The liner is cut to the exact length and diameter of the damaged section, then saturated with a two-part epoxy resin. It is pulled into the pipe through an existing clean-out. An inflatable bladder presses the liner against the pipe wall. The resin cures with ambient temperature, hot water, steam, or UV light. Curing takes two to six hours.
The liner is cut to the exact length and diameter of the damaged section, then saturated with a two-part epoxy resin. It is pulled into the pipe through an existing clean-out. An inflatable bladder presses the liner against the pipe wall. The resin cures with ambient temperature, hot water, steam, or UV light. Curing takes two to six hours.

How Much Does Pipe Relining Cost and How Long Does It Last?

Residential pipe relining typically costs $80 to $250 per linear foot for standard 4-inch to 6-inch diameter pipes. According to NuFlow’s CIPP cost guide, CIPP lining saves about 30-40% compared to traditional dig-and-replace methods.

For a typical 50-foot residential lateral, that translates to $4,000 to $12,500 versus $8,000 to $20,000+ for full excavation and replacement. CIPP liners are engineered for longevity and typically exceed a 50-year lifespan. Many manufacturers offer 50-year warranties.

Side-by-side cost comparison of pipe relining versus traditional sewer line replacement in New Jersey

Why Is Pipe Relining a Good Fit for New Jersey Homes?

Many homes in South Jersey were built with clay or cast iron sewer pipes in the 1950s through 1970s. These materials degrade over time but are often still structurally intact enough for relining. Clay pipes develop cracks at the joints. Cast iron corrodes from the inside out. Both respond well to CIPP lining.

South Jersey properties in Evesham, Cherry Hill, Voorhees, and Haddonfield often have landscaped yards, mature trees, and paved driveways directly over the sewer lateral. Relining avoids all that disruption.

New Jersey’s freeze-thaw cycles put constant stress on underground pipes. A relined pipe has no joints. The continuous interior eliminates the weak points where most failures begin, making relining especially effective in the mid-Atlantic climate.

What Is Pipe Relining and How Does It Work?

Is Pipe Relining Better Than Replacement and Is Your Pipe a Candidate?

For pipes that are cracked but still structurally intact, relining is usually the better option. It costs less, takes one day instead of several, and avoids tearing up your property. The relined pipe has no joints, which eliminates the weak points where most failures and root intrusions begin.

Relining does not work for every situation. Pipes that are fully collapsed, severely misaligned, or have large sections missing need full replacement. Orangeburg pipes, common in South Jersey homes from the 1950s and 1960s, usually cannot be relined because they collapse under their own weight.

For more on costs, read our detailed breakdown of how much it costs to line a sewer pipe. If you want to compare trenchless options, check can a sewer line be replaced without digging. And if you are unsure about coverage, read does insurance cover sewer line replacement.

Frequently Asked Questions About Pipe Relining

A properly installed CIPP liner lasts 50 years or more. The epoxy resin is resistant to corrosion, root intrusion, and chemical damage. Many manufacturers offer 50-year warranties.
The liner adds a thin layer to the inside of the pipe, which slightly reduces the diameter. However, the new surface is much smoother than the old pipe wall. This improved flow more than compensates for the small reduction in size.
No. Pipes that are fully collapsed or severely misaligned cannot be relined. Orangeburg pipes, common in South Jersey homes built in the 1950s and 1960s across Camden and Burlington counties, often need full replacement instead. A camera inspection confirms whether relining is an option for your home.

Fix Your Sewer Line Without Digging Up Your Yard

The Sewer Kings offers trenchless pipe relining for homeowners across South Jersey. We inspect the pipe, clean it, install the liner, and verify the results with camera footage. One day, no excavation, and a pipe that lasts 50 years.

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