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Tailor-made sewer rehabilitation

Whether open or closed construction, we repair damaged sewage pipes efficiently and cost-effectively thanks to state-of-the-art rehabilitation methods. Digging up front gardens, pavements and streets is no longer necessary.

In order to avoid major damage and contamination of the groundwater in the long term, Fink is your experienced partner for all types of rehabilitation measures.

  • All diameters
    Sewer pipes from 50 mm diameter (DN 50) to 250 mm and more: connection, downpipes, warped pipes and ground pipes, sewer connections, sewer pipes

  • Various types of damage
    Cracks, shard formation, root ingrowths, leaking joints

  • All rehabilitation methods
    Depending on the type of damage and pipe: hose-inliner using the 2-component liquid method or, in extreme cases, with digging up

  • Up to 30 metres in length
    Selective pipe repair as well as complete pipe rehabilitation over a length of up to 30 metres

  • 5-year warranty
    Use of materials with DiBt approval and warranty according to VOB 4 years and according to BGB 5 years

Order acceptance

Telephone: +49 89-666 373-0
Telefax: +49 89-666 373-44
Email: info@fink-gmbh.de
24-Emergency-Service
+49 171 – 7 333 006

Get assurance about the condition of your pipeline network.

Act quickly, otherwise it can be expensive!

If sewage pipes in the building are defective, you have to react quickly because leaking water in the masonry causes costly damage. The same applies to defective sewers outside buildings. The most common causes there include root ingrowth, settlement cracks and punctual cracks that may require repair. If you suspect that there is a defect or blockage, you should have an investigation or sewer repair carried out immediately. This is because leaking water begins to wash away the surrounding soil. As a result, the position of the pipe may change and broken pieces may fall out. Repairing a sewer that has already been washed out is difficult and usually very costly. In addition, leaking sewage can lead to soil and groundwater contamination for which you will be held accountable.

First step: Determine the extent of the damage

Every pipe or sewer rehabilitation begins with a sewer or pipe cleaning. We then use a camera inspection to get a precise picture of the damage. Roots, pipe fragments etc. are milled away. Any damage is therefore determined beyond doubt, precisely measured and documented. All existing branches, connections and inlets are also measured. The documentation of the damage is carried out according to ISYBAU or ATV via digital video recordings, photographs and in written protocols.

Inliner sewer rehabilitation – this is how it works

With the inliner or liner technique, a glass-fibre mat is impregnated with a fast-curing resin – a 2-component epoxy resin – and inverted into the pipeline to be rehabilitated. The resin has excellent properties in terms of bonding, adhesion and sealing. As a result, the curing time is only 3 to 8 hours and can even be accelerated by adding warm water or hot steam. Depending on the damage and the pipe, a distinction is made between the classic inliner method and the so-called short liner or partliner method for short repair sections.

Short liner for spot repairs

A so-called short liner or partliner is used for minor damage. With the help of the sewer camera, a resin-impregnated glass fibre mat of a suitable length is pushed exactly to the damaged spot. The mat is pressed against the inner wall of the pipe by a „packer“ until the material has cured properly. The result is a thin-walled, punctual pipe-in-pipe system with a smooth and flowing transition from short liner to pipe. This „pipe-in-pipe“ process prevents

Longliner for complete pipe sections

If there are several defective spots on the sewer or if the affected pipe is inaccessible – as in the case of sewer systems on flat roofs, for example – we lay the inliner continuously from manhole to manhole or from manhole to street sewer. The glass fibre mat impregnated with epoxy resin is then wound into an inversion drum and blown into the sewer via air. We then water this new pipe-in-pipe system for two to four hours and allow it to fully cure for 24 hours under air pressure. Once the resin has cured, the previously measured side inlets and manhole connections are milled to an exact fit using a milling robot.

Everything with letter and seal

With inliner sewer rehabilitation, complex piping and drainage systems can be repaired cost-effectively without digging up. We can rehabilitate up to 40 metres of underground sewers in one piece, and rainwater downpipes up to 30 metres long. We only use materials with DiBt approval. After completion of the sewer rehabilitation work, we check the successful repair by means of a camera inspection and give you a warranty of four years according to VOB 4 and five years according to BGB. To document the rehabilitation, you will receive video recordings, photographs and written protocols from us, with which you can legally prove that you have properly fulfilled your legal obligations.

Sewer and pipe cleaning – do you know our other services?