Trenchless manhole rehabilitation with the PREDL-FLEXLINER system, made out of wastewater-resistant synthetic material.

With the PREDL-FLEXLINER, a user-friendly manhole rehabilitation is possible within a short time. The manhole base liner is inserted through the cone in the manhole in one piece and in a non-destructive manner and unfolded to the original size once in the manhole. 

Rehabilitation with the PREDL-FLEXLINER provides a new, permanently protected manhole base. A perfect cheaper alternative to the complete replacement of the manhole structure.

By taking a 3D laser scan of the old manhole, the new FLEXLINER is designed based on the scan data. 

To create a permanent connection between the FLEXLINER and the old manhole, the FLEXLINER is backfilled with a special highly modified grout (FLEXgrout). The knubs and granules on the back of the FLEXLINER guarantee a strong and permanent bond to the grout. The pipe connection is made using a stainless steel sleeve. 

Further vertical rehabilitation of the entire manhole structure can be done with PP-CORPROTECT, which results a completely protected system. 

ADVANTAGES:

• corrosion proof and H2S resistant
• no digging work
• I&I resistang
• Utilizes 3D scanning
• quick and simple installation through the cone
• more environmentally friendly than other rehabilitation methods
• no more maintanance, lifespan of several decades