From an Outside Cleanout
A similar process is presented from an outside cleanout. In this case, again the distance from the clean-out cap to a determined location is measured using a push camera with markings. The liner and bladder are assembled, resin saturation is performed and the liner is inverted in-place. The key is to begin the liner downstream or upstream of the cleanout vertical riser to allow for no cutting. Cutting not only requires time and money, it is also very difficult to achieve a full, smooth circular surface cut, especially from a 4-inch vertical pipe that dead heads into the lateral pipe.
Previously, lateral linings were inserted from an excavation near the property line or near the house foundation. Excavation pits are messy, create higher costs through digging and restoration, more risk and take more time to repair the defective lateral pipe. This method for lining through a clean out, with no cutting required, eliminates the need for an excavation pit, reduces costs and additional laterals can be renewed in a day. Business owners, property owners and homeowners are happier because their property has not been torn apart and their sewer has been repaired in just a few hours.
The simple system allows for installation from one open point, typically from an outside cleanout or an inside cleanout that is normally located in the basement of the home. The installer can determine the placement of the lining by where they position the liner within the bladder.