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Bentonite Waterproofing

Save £13.59 inc.VAT

Size: Bentonite 1.1m x 5m (5.5m2)
Sale price£78.71 inc.VAT Regular price£92.30 inc.VAT


Wykamol Bentonite is a high performance sodium bentonite system. Our high swelling, low permeability sodium bentonite that is fully encapsulated between a non-woven and woven geotextile, providing a robust and secure method of waterproofing.


Wykamol Bentonite complies to BS8102 grades. Applications range from:

  • Basements
  • Lift pits • Swimming pools
  • Tunnels (cut and cover)
  • Tanks
  • Spray applied concrete


  • Wykamol Bentonite Granules
  • Wykamol Seal
  • Wykamol Bentonite Fixings


  • Fleece backed membrane that fully bonds to fresh concrete
  • Self healing and easily repaired if damaged
  • Easy to install
  • Also acts as a post applied membrane system prior to backfilling (please consult with Wykamol technical team prior to application)
  • Can be installed in all weather conditions
  • Wykamol Bentonite can swell up to 15 times it’s dry volume.
  • BBA accredited system


  • Wykamol Bentonite must be fully confined and covered to stop product from free swelling and degrading. Maximum performance is achieved when fully compressed by the structure and/or backfill.
  • Must not be installed on live (running), standing water (ponding water) or ice.
  • Where ground water contains strong acids, alkalies, salt or contamination, consult our technical department for advice.
  • Must not be used in movement joints. For movement joints please contact technical team at Wykamol for more information.


Bentonite-Data Sheet


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