Product Overview

AGRU America’s AGRUFlex® Tunnel Liner protects concrete tunnel structures against the infiltration of water, aggressive soils, and root penetration. This tunnel lining system offers superior water resistance, reducing the maintenance costs of having to repair water spots, dripstones from lime diffusion, and external corrosion.

The co-extruded VLDPE tunnel liner is produced by flat die calendering. The liner has a black base layer and a white or brightly colored signal layer. VLDPE’s excellent flexibility guarantees a perfect fit to the tunnel structure as well as easy installation, resistance to aggressive groundwater, and leak-proof joints between the polyolefin tunnel liners.

Technical Aspects

AGRUFlex is created from high-grade resins of quality raw material. The manufacturing process yields a highly flexible tunnel lining material that is easy to install and weld. No toxic fumes are produced should AGRUFlex come into contact with a chemical or electrical fire. And its high-quality construction and EasyFix system ensures maximum service life.

  • Brochure
  • Case Study
  • Lining Systems
  • AGRUFlex® Data Sheet
  • Water Stop Profile Data Sheet
  • AGRU Tunnel Mounting Disc Data Sheet

Product Solutions


EasyFix delivers fast and reliable installation of VLDPE fabric backed tunnel liners.

  • No influence of the liner‘s mechanical properties caused by adhesive bonding
  • Installation with semi-automatic formworks
  • Flexible installation methods
  • Up to 40% reduction in installation time with easy and precise placement of the tunnel liner
  • Liner widths up to 4m

AGRU Waterstop Profiles

The perfect solution for attaching the liners and concrete protective liners to concrete constructions and compartmentalizing areas in case of future repairs.

  • Integrated injection hose clamp for OD 9 – 12 mm
  • Defined outlets for even distribution
  • Polyolefin based VLDPE resin
  • Optimized compatibility with polyolefin based tunnel liners
  • Free of plasticisers and halogens

Need Help Determining Which Product is Right For Your Application?

Interested in learning more about how one of our products can make a difference in your next project? Please reach out to us with your questions and one of our sales or technical staff will be happy to assist you.

We can help you determine your exact product or application-related needs. And because our products meet, and often exceed, industry standards you can rest assured knowing that you are getting the best solutions in the business.