What is Sewer Spray Lining?
Sewer spray lining, also known as pipe coating, is a form of trenchless pipe lining that utilizes a sprayed-on polymer resin. One of the main things that separate this process from structural pipe lining is the absence of a structural liner made from a felt-like material, fiberglass, or other material. The Repipe Spray Lining System is a state of the art technology that is revolutionizing the spray lining industry. Previously, epoxy resins were predominately used for pipe coating, however with the absence of a structural felt liner, epoxy, when cured tends to be brittle and cracks as host pipes experience subtle movements. Now however, with Repipe’s patented polymer resin, you get the sewer rehab benefits of epoxy spray lining, with the unmatched flexibility of a polymer. This system can be used to rehabilitate sewer pipes between 1.5” to 6″ in diameter. When used in combination, structural pipe lining and spray lining can be used to rehabilitate virtually every drainage pipe in your home or building without digging.
HOW DOES SEWER SPRAY LINING WORK?
Step 1: Preparation and Inspection
The spray lining process begins with proper protection of the client’s property by laying plastic and clearing the work area. Then the pipes are thoroughly inspected by means of a CCTV sewer camera to note any deficiencies including cracks, holes and obstructions.
Step 2: Cleaning
Following the inspection, the pipes surface must be prepared by thorough cleaning 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.
Step 3: Coating
After the pipe has been prepared and has dried to the extent necessary, the spray coating process begins. The Repipe operator and his assistant feed the spray nozzle into the pipe via the determined access point and push the spraying head to the end of the section to be repaired. The machine is then turned on and slowly pulled back to the access point while the pipe is being coated. This process can be repeated to add more coats as necessary. Once the coating is complete, the area is cleaned up and the resin is allowed to cure for about 4 hours and then repair is complete and the use of corresponding drain fixtures can be resumed.
Will Sewer Spray Lining/Coating Work For Me?
Trenchless spray lining and pipe coating is a great solution for rehabilitating small branch lines such as kitchen lines. Two inch pipes are very difficult to structurally line with conventional CIPP, however, the Repipe spray lining system can rehabilitate these pipes with ease, saving homeowners from having to tear up their floors. Sewer spray lining is also great as a preventative measure to coat pipes, extending their lifespan and stopping corrosion and rust. If your pipes meet the following criteria, spray lining may be a solution for you.
- Cracks and holes are small
- Pipe is not missing large sections
- Pipe is not collapsed
- You are looking to stop a pipe from deteriorating before it needs to be replaced
- Pipe is between 1.5” to 6” in diameter.
THE SEWER PROS GUARANTEE
We guarantee all of our trenchless spray lining workmanship for 10 years. The manufacturer also provides a 15 year warranty on the materials. We welcome the opportunity to show you the benefits of spray lining and coating. Contact us today to get started.