Bentofix® is a needle-punched reinforced geosynthetic clay liner (GCL) with two
geotextile layers encapsulating a layer of sodium bentonite for sealing
applications. Bentofix® “X” types are needlepunched GCLs where the
woven fabric is coated with a low permeability and gas-tight polyolefin
coating to achieve an immeadiate barrier prior to hydration.

Bentofix® is multifunctional

Bentofix® is an extremely versatile clay-based lining product. Once
hydrated, Bentofix® is an effective barrier against liquids, vapours,
and gases.
With over two decades of successful installations, the range of Bentofix® applications is virtually limitless:

  • waste and contaminated soil caps
  • landfill base liners
  • gas and vapour seals
  • surface impoundment liners
  • secondary containment
  • dams, canals, and water courses
  • tailings containment
  • groundwater protection
  • sorptive barriers
  • vertical barriers
  • waterproofing

Advantages of Bentofix®

  • versatile sealing applications with different GCL types and sodium bentonite
  • can reduce construction costs by replacing compacted clay
  • robust geotextiles encapsulate and contain the bentonite
  • withstands differential settlement
  • uniform peel strength provides multi-directional shear strength
  • Thermal Lock process increases internal shear strength and interface friction angles
  • self-sealing overlaps available
  • installation advantages with 5 m wide rolls
  • quick and easy to install
  • BBA certified waterproofing systems (Bentofix® BFG 5000 and X2 BFG 5300)
  • ISO 9001 certified
  • CE marked

Bentofix® is safe

Strong and durable nonwoven geotextiles encapsulate and protect the
layer of sodium bentonite ensuring its long-term performance. And since
Bentofix® contains highest quality sodium bentonite, an immediate
swelling following installation is ensured to safely self-seal any
unexpected mechanical damages. Because of its immense elongation
capacity, Bentofix® shows a long-term adjustment to earth deformations,
such as differential settlements. Steep slope applications are easily
accommodated by Bentofix®. A unique fibre-bonding process locks the
needle-punched fibres into place creating high internal shear strength
with unsurpassed creep resistance. Bentofix® also addresses the often
critical issue of interface friction angles. The mechanically bonded
nonwoven geotextiles provide the shear resistance necessary for even the
most demanding applications. This fibre reinforcement also prevents
lateral migration of the bentonite. Bentofix® is clearly superior to
conventional compacted clay liners. Bentofix® GCLs are certified by
government regulators.

Bentofix® is economical

Bentofix® provides both economical and environmental advantages.
Since Bentofix® is equivalent to multiple lifts of compacted clay, it
thereby increases the potential containment volume in landfills,
yielding additional revenues from tipping fees. Bentofix® instal lation
is quick and easy; it is simply unrolled on site and overlapped at the
joints. From a logistical point of view, the advantages of Bentofix® are
also easy to see: one truckload of Bentofix® covers 4,000m² compared
with only 40m² (500mm thick) for a load of clay.

Bentofix® is simple

Field testing and sampling from completed claycovered areas are a
thing of the past with Bentofix®. The manufacture and quality control
laboratory programme of Bentofix® means it arrives on site with the
necessary test results, ready for installation. Compaction and moisture
content testing are also eliminated with Bentofix®. »Unroll and cover«
is the motto of Bentofix® installations. There is no easier way to do


Bentofix® is a robust, versatile product that provides the highest
safety standards and cost efficiency available. Bentofix® is unrivalled
when it comes to project logistics, too. Choosing Bentofix® will reduce
construction costs and time, while also preserving our natural

Bentofix® photos