What is Trenchless Pipe Lining?

Trenchless pipe lining, otherwise known as cured-in-place-pipe (CIPP), or pipe relining, is the process of rehabilitating existing pipes without digging or destruction. A new pipe within an existing pipe is formed utilizing a structural liner and/or a resin such as an epoxy or polymer. There are many techniques used to line pipe including the continuous inversion method with robotic branch reinstatements, the pull-in-place (PIP) method, and the spray coating method. We also have pipe lining solutions for sanitary tees, point repairs, and more. Sewer Pros is proud to serve Southern California from Rancho Palos Verdes to Santa Monica with trenchless pipe lining services.

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Trenchless Sewer Repair - Pipe Lining in Rancho Palos Verdes, CA
Trenchless Sewer Repair - Pipe Lining in Rancho Palos Verdes, CA


  • Save 30-40%

  • No Digging

  • 50+ Year Life-Use

  • Fast Repairs

  • “Green” Technology

  • Minmal Disturbance



Step 1: Cleaning

The trenchless pipe lining process begins with proper surface preparation just like any other process involving the use of epoxy or polymer resins. We often use a combination of techniques to remove scale, buildup, and restore the pipe as close to its original diameter as possible. These cleaning techniques consist of hydro-jetting or a dry-mechanical method that involves spinning chains to remove calcified deposits, scale and rust.

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Step 2: Lining

After the pipe has been prepared and has dried to the extent necessary, the lining process begins. First, the structural felt liner and other materials are measured and cut to match the pipes length. Then, the resin, usually a two-part epoxy is mixed and added to the liner. The liner is then “wet-out” or pressed to ensure complete saturation with the resin. Next, the liner is either loaded in to an air compressed drum and shot into the pipe, or it is pulled into place from a second access point such as a cleanout. Once the liner is in place, air pressure is increased, inflating the liner to take the shape of the host pipe. The liner is then left to ambient cure. The curing process is sometimes expedited via the use of steam or specialized UV equipment.

Step 3: Robotic Branch Reinstatements

Once the resin has cured and the liner has hardened, the inflatable bladder is removed from the pipe and the robotic branch reinstatements begin. During this step, all of the branch line openings that were covered over by the liner are reopened to allow for the use of the corresponding drain fixture.

Will Trenchless Pipe Lining Work For Me?

Trenchless pipe lining works under a wide range of circumstances. If your situation matches any of the following criteria, chances are pipe lining will work for you.

  • Sanitary Drainage/Sewer Pipes Only
  • Residential, Commercial, Industrial
  • Vertical Stacks – Kitchen, Laundry, Vents
  • Horizontal Underground Pipes – Under Slab
  • Branch Lines as Small as 2”
  • Lateral Lines – From City Main to House
  • 2” to 12” in Diameter Pipes

Our Trenchless Technology

Over the years, we have invested heavily in technologically advanced equipment so that we can continue to offer the best trenchless sewer repair services possible.


Enables us to structurally line continuous lengths of up to 600’ of pipe.


Used for the reinstatement or reopening of branch lines after lining.


A spray lining system to coat pipes, fittings, and branch lines.

Limitations of Trenchless Pipe Lining (CIPP)

Rarely is there a situation in which trenchless pipe lining is not a repair option. Orangeburg pipes typically cannot be lined due the inability to clean the pipes thoroughly enough without destroying them. In some cases, a pipe, or a section thereof may be collapsed or so severely deteriorated that there is no structure or clear path for the liner left. Since pipe lining requires a host pipe to take the shape of, the above situations can be an obstacle. The good news is that in such cases, the affected portions of pipe may sometimes be replaced conventionally, allowing for the rest of the system to be lined.


We guarantee all of our trenchless pipe lining work for 10 years. We are confident that when done correctly as per the manufacturer’s specifications, structural pipe lining applications can last 50 to 100 years. We welcome the opportunity to show you the benefits of pipe lining. Contact us today to get started.