AGRU Concrete Protection System | Ultra Grip


Ultra Grip, a part of the AGRUSAFE system, is a concrete protective liner made of chemically resistant plastics that prevents concrete corrosion and therefore significantly extends the life of structures. Ultra Grip is ideal for construction with high groundwater pressure, harsh environments, or strict environmental requirements.

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With over 30 years of experience in the production of concrete protective liners (CPL), AGRU first developed its iconic V-Shaped Sure-Grip anchor over 25 years ago. This innovative design with 13 mm tall anchors has set the standard for the industry. However, AGRU has continued to lead the industry with subsequent innovations including Sure-Grip Type 571 with 19 mm anchors and Ultra Grip with a revolutionary redesign of the 13 mm Sure-Grip anchor.

Ultra Grip, produced from high-density polyethylene (HDPE) and polypropylene (PP) is available in thicknesses ranging from 2 mm (80 mil) to 5 mm (200 mil). Ultra Grip is available in a variety of colors and configurations for both rolls and sheets and is among the widest CPL produced in the United States at 10 feet. But Ultra Grip’s impressive backpressure resistance is what sets it apart from its competitors. If a corrosion protection system cannot sustain the required backpressure long-term then its failure is imminent. Failure leads to concrete corrosion with high costs associated with replacement, traffic control measures and bypass pumping systems.

Groundwater backpressure also presents a significant concern for wastewater professionals due to its contribution to inflow and infiltration into sewer systems. Allowing other fluids to enter a wastewater treatment system is an unnecessary and costly expense. Therefore, wastewater professionals are compelled to design systems that are limited to only treating wastewater. Ultra Grip’s tensile strength and high elongation allow it to bridge cracks in concrete structures and prevent groundwater from entering the wastewater system.

Ultra Grip concrete protective liners made of HDPE, HDPE-el, PP, PVDF (Sure-Grip), and ECTFE (Sure-Grip) are produced with state-of-the-art manufacturing technology. This system has been successfully applied worldwide for more than 25 years and serves as a long-term alternative to spray-applied concrete protection products.


Lining of Precast Concrete Structures
AGRU’s concrete protective liners offer many benefits for the lining of precast concrete structures, including prefabricated concrete elements, concrete pipes and manholes, tank constructions, and oil/water separators.

Lining of Cast in Situ Structures
AGRU’s concrete protective liners are easily fabricated to the shape of the construction thanks to the quick and safe mounting to existing formworks by means of end profiles and tear off profiles. After the concrete sets, the concrete protective liner system is extrusion welded to provide a leak-proof solution. This installation method enables the installation of both the concrete protective liner and the formwork at the same time. In situ structures include underground construction; foundations and bridges; areas where chemical media are used, transported, or stored; and any type of basin.

Structure Relining/Rehabilitation
AGRU’s concrete protective liners can be used to reline and rehabilitate many existing concrete structures. This is accomplished through the use of a formwork system and the introduction of grout or concrete into the interstitial space. The concrete protective liners can be prefabricated and preassembled in sections to significantly speed up the on-site installation efforts, reducing production downtime and project costs.

Trenchless Relining of Underground Pipes
AGRU offers system solutions for trenchless relining which enable the rehabilitation of various cross sections and dimensions, independent of the degree of corrosion. Applications include segment and hose relining as outlined below.

Segment Relining
For segment relining, short prefabricated inliner sections are inserted into the pipe or channel. These sections are then fixed to a formwork. The gap between the liner and the old pipe is then backfilled with viscous, high-flow grout. After the grout sets, the formwork is removed and the individual segments are welded together.

Pipe Relining
For pipe relining projects, the inliner is custom-fabricated to be pulled between manholes. The process starts by sealing the inliner with plugs. Water pressure is introduced to the pipe depending on the required grouting length. Finally, a special grout is injected into the gap between the liner and the old pipe. This application has a successful track record and can be used with section lengths of up to 650’. Rehabilitated diameters range from 12” up to 84”.

  • Concrete Protective Liners Brochure
  • Containment Solutions
  • Water & Wastewater Solutions
  • Land And Sea-Based Aquaculture
  • AGRU Conductive Cap Strip Flyer
  • CPL in Piping Systems
  • Drop-in Specifications
  • How to Reduce Infiltration in Lift Stations and Manholes

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.