Cured In Place Pipe (CIPP)
Lateral Liners, LLC. repairs lateral sewer lines using a method called Cured In Place Pipe relining, or CIPP. In essence, the CIPP method builds a pipe within a pipe by inflating a fabric liner soaked in resin inside the existing pipe, and allowing that liner to harden in place as it conforms to the shape of the existing pipe. The hardened (or cured) liner has the same structural integrity as a Schedule 35 plumbing pipe that would have been used had you installed a new pipeline. However, the cured-in-place pipe is a continuous, seamless pipe with no joints, and consequently, no single point of failure. The Lateral Liners method of pipe relining produces a relined pipe with a 50 year life expectancy.
The entire installation time of a cured-in-place pipe as performed by Lateral Liners, LLC. averages about 4 hours, depending upon site conditions and the quality of the existing pipe. We plan and prepare in detail to avoid disrupting the grounds as much as possible, and minimize any digging necessary.
Closed Circuit Television Video (CCTV)
Before any work is done on site to repair a problem sewer line, a special camera is lowered into the pipe to examine and record the lateral line’s current condition. Access to the lateral line is typically through a cleanout, or access pipe located outside of the residence. Unfortunately, many older residences do not have such an access point, in which case we need to enter the residence, remove a toilet from its fittings, and insert the camera into the drain pipe. In these instances, we strongly recommend the installation of a cleanout in conjunction with the pipe relining project, as it will facilitate future cleaning and maintenance projects while minimizing disruption to the residents.
The camera’s trip down the lateral line to the mainline sewer is viewed and interpreted live onsite by our trained technician, as well as recorded on video tape for later examination. The camera also serves as a measuring device, electronically recording the length of the pipe. Joint separation, cracks, sags and tree root problems are revealed. The general condition of the pipe is noted, and its suitability for relining or replacement is determined.
Jetting and Cleaning
Before any actual relining work is done, the lateral line is jetted and cleaned with a high pressure water hose. This operation is done by a professional who specializes in this type of work, assuring that no further damage is done to the pipeline at this stage of the process. Grease and accumulated buildup is removed, and any tree roots intruding into the lateral line are cut and eliminated.
The liner most commonly used by Lateral Liners, LLC. is a woven or knit fabric with a PVC coating, manufactured in 2 to 12 inch diameter tubes. Using the measurements from the camera, the proper length is cut, and the appropriate resin mixture is selected. Temperature, water, site conditions and curing time all affect the selection of the appropriate material and resin to be used at each site, an exacting science requiring considerable skill and experience to perfect.
The liner is saturated with the resin onsite, at which point the chemical curing process has begun. Our resins are low-odor resins specifically manufactured for us to a patented formula, designed to minimize the release of any chemical smell. The resin is actually pulled through the liner in a vacuum process, ensuring the full impregnation of the liner as fast as possible
Once the liner is saturated, it is then loaded into a compressed air gun, and literally shot into the existing pipeline using an inversion process that turns the liner inside out while traveling through the pipe. The liner is still soft and flexible, and so it is able to cover all the gaps and cracks that previously interrupted your flow with a smooth, finished surface.
After the liner has been installed, it is inflated and left to cure for approximately 2 hours. At that time, the inflation bladder is pulled out, and the camera is sent down again to inspect the final work. Even though the new liner may reduce the diameter of your existing pipe by 4mm or less, it can restore your flow rate to 100% or better as material flows evenly over the super-smooth, continuous surface of the new pipe A DVD or flash drive of the relined lateral is made so our clients have a complete before and after record of the repairs that have been made.