Sewer pipe relining

Upgrade your pipe repair services with Repiper’s step-by-step sewer pipe relining method, tools, and products.

How does it work?

Sewer pipe relining is a revolutionary repair approach that offers numerous benefits over traditional methods. Here’s a simplified step-by-step rundown of how this non-invasive process works:

  1. Inspection: Before the relining process begins, a thorough inspection of the sewer pipe is performed using specialized cameras. This helps to determine the extent of the damage and plan the relining process accordingly.
  2. Cleaning: The existing sewer pipe is then thoroughly cleaned using high-pressure water jets. This step ensures that the new liner will adhere properly.
  3. Preparation of the liner: A flexible liner, saturated with a two-part epoxy resin, is prepared. The liner is custom-made to match the length and diameter of the sewer pipe being repaired.
  4. Insertion: The saturated liner is inserted into the damaged pipe using a technique called inversion, or it may be pulled into place. The method used depends on the pipe’s specific conditions and requirements.
  5. Inflation: Once in place, the liner is inflated using an air or water bladder. This presses the epoxy-soaked liner against the inner walls of the existing sewer pipe.
  6. Curing: After inflation, the liner is left to cure. During this time, the epoxy hardens, forming a robust, resilient, and seamless pipe within the existing pipe.
  7. Final inspection: Once the liner has fully cured, a final inspection is performed using the specialized cameras. This ensures that the sewer pipe relining process has been successful and the new pipe is ready for use.
Trenchless pipe lining | Repiper



Join the Repiper Network

Tools and Products | Repiper

Supercharge your relining installations with Repiper’s innovative tools and products. Along with our superior equipment, we offer tailored training for contractors, equipping you for success.

System Resellers | Repiper

Join the Repiper network as a system or retail reseller. Enjoy exclusive geographical rights and boost your business by covering your initial investments and driving growth.

R&D Partners | Repiper

Join forces with Repiper as a research and development partner. Partnering with us can help optimize system solutions and relay products, boosting efficiency in plumbing and sewage maintenance.


Advantages of pipe relining include a less invasive installation process, cost savings compared to pipe replacement, improved water flow, and increased pipe lifespan. Disadvantages may include limited applicability for severely damaged pipes, potential for improper installation, and the need for specialized equipment and trained professionals.

Sewer pipe relining can last anywhere from 25 to 50 years, depending on factors such as the quality of materials used, the installation process, and the environment in which the pipes are located.

Replacing cast iron drain pipes with PVC pipes can be a good option because PVC is resistant to corrosion, lightweight, and easier to work with. However, it’s essential to consider factors such as the age and condition of the existing cast iron pipes and the costs involved before deciding.

Yes, you can put a PVC pipe inside a cast iron pipe as part of a relining sewer pipe process.

Yes, replacing clay pipes with PVC pipes can be a good option. PVC pipes are more resistant to root intrusion, cracks, and breakage. They are also lighter, easier to work with, and generally more durable than clay pipes.

Yes, a cracked clay sewer pipe can often be relined. Relining sewer pipe can provide a long-lasting solution to cracks, sealing the pipe and preventing further damage. However, the suitability of relining will depend on the extent and location of the cracks.