INVERSION Rehabilitation 
 

The trenchless in-liner method enables fast and comparatively inexpensive sewer rehabilitation. Particularly in the case of long pipe sections, it quickly becomes apparent that the effort and costs involved in inliner rehabilitation remain within reasonable limits. This is because instead of tearing up the floor and walls, a tube made of robust fabric material (the so-called liner) is impregnated with special resin and then inserted into the pipe. Using water or air pressure, the hose is pressed against the pipe wall from the inside and hardens there. After the curing time, the sewer pipe is permanently sealed again and the sewer rehabilitation is completed after appropriate testing.
 

If direct bonding to the old pipe is not desired, we recommend the use of a pre-liner. A pre-liner is a flexible film tube that is inserted between the liner and the old pipe. The pre-liner also protects the textile liner from water penetration.

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Important information about In-liner Rehabilitation

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• In-liner rehabilitation can also be the best solution for indoor repairs. However, it is not suitable for every pipe as the pre-liner and liner remain in the pipe and reduce its diameter. The nominal diameter should therefore not be too small. The thickness of the liner used should also be checked and considered accordingly.

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• Pipe rehabilitation using the in-liner method should only be carried out by experienced professionals! Compared to short liner rehabilitation, which should also only be carried out by professionals, in-liner rehabilitation is more complex. In addition, the use of compressed air to invert the liner and the use of hot water (steam) to cure the liner require the utmost care and expertise.