How Is Residential Pipe Lining Installed? – 6 Steps:
These 6 steps explain the pipe lining process for cast iron drains under your home. If you are interested in large diameter municipal or commercial pipe lining methods, go here.
1. Clean The Pipe
First the old scale and rust has to be removed using a high-pressure water “jetter” from the “cleanout” access point outside the house, and running a water hose into the pipe that washes out all the debris. Sometimes if the scale is too hard, a snake is used that has special “heads” on the end of it to dislodge the scale. At the end of the cleaning process, all roots and rust and scale have been removed, and cracks and holes are clearly visible.
2. Video Inspect The Pipe For Measurements
3. Prepare The Liner
4. Pull Or Shoot The Liner Into The pipe
There are two ways to get the liner into the pipe. The first way is to pull it into the pipe using a cable. The liner is pulled into a precise location so that the pre-cut connections line up where the incoming pipes are. The second way the liner may be installed is to “invert” or “shoot” it into the pipe. In essence, the liner is rolled into a tank that has a gun barrel sticking out of it. When the tank is later pressurized with air, the front end of the liner that is sticking out of the barrel and that has been wrapped around the outside of the barrel, shoots the liner into the pipe as the liner turns inside out. Here is a video showing our proprietary air-inversion pipe lining.