How is the Pipe Relining Process Done?

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Pipe relining has become a truly revolutionary pipe repair process in this modern age. Plumbing contractors are slowly abandoning the old method of pipe repairs which is excavating the underground sewer pipes and replacing it with a new one. Today, multitudes of plumbers are now using pipe relining as their primary method in rehabilitating pipes. After all, trenchless rehabilitation is much better than pipe excavation repairs since it rarely needs site digging, doesn’t suffer from corrosion, prevents root intrusions, and many more! Some of you may wonder how this trenchless rehabilitation works so we will talk about how the pipe relining process is done. Take note that we are using the CIPP (cured in place pipe) met hod.

Step 1: Initial preparation for smooth lining

Plumbing contractors don’t immediately insert the new pipe lining; they must first ensure that the sewer pipe system is free from any sort of blockade. Plumbers use a Drain Camera in order for them to inspect the pipe easily. If there are any clogs that are present in the sewer line then it’s cleared off with the use of a water jetting unit. The strong water flow of this equipment can get rid of any obstruction found in the pipe.

Step 2: Getting the right measure for the lining

Now that the pipe is clear, the plumbers can now get the accurate measurement of the pipe, specifically the length.

Step 3: Pipe Lining is distributed into the sewer lining

The new pipe lining is then infused into the old pipe system. This infused pipe is mainly composed of epoxy resin mixed with hardening components. The resin pipe is smaller in diameter so that it can easily fit into the old or damaged pipes. It’s also spread evenly to the linings.

Step 4: Pressing the lining

Through the process of air inversion, the epoxy lining will able to attach itself to the sewer pipes. In some cases, plumbers use water inversion to expand the inserted pipe.

Step 5: Waiting for the epoxy resin to harden

Now that the epoxy resin is now in position, the next step is to just wait for it to properly harden. This process can be sped up with the use of UV lighting or hot water. However, the effectiveness of these hardening methods will depend on what type of lining is used.

Step 6: Final Inspection

Pipe relining doesn’t stop with the epoxy finally attaining true solid form, there’s one last step and that’s none other than another camera inspection. Again, a Drain Camera is used to survey the sewer pipe lining. This time, the purpose of this pipe inspection is to check if there are no leaks and that the resin lining is properly sealed. If there are parts of the sewer line in which the epoxy isn’t properly placed then a pipe patching method is applied to the affected area. Pipe patching is basically a small scale operation that has the same process with pipe relining. This method is mainly used in rehabilitating small section pipe repairs.

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