SikaProof® Bentonite


SikaProof® Bentonite is a needle‐punched thermally locked Geosynthetic Clay Liner (GCL) used to waterproof below ground concrete structures. It is a waterproofing system which efficiently protects reinforced concrete structures, preventing the penetration of water and subsequent attack by aggressive chemical substances present in the surrounding soil. SikaProof® Bentonite is manufactured in Australia in accordance with the ISO 9001:2000 Quality Management System and consists of high quality polypropylene geotextiles and premium grade natural sodium bentonite. It is fibre‐reinforced by needle‐punching the product across its entire length and width. The high strength fibres are then thermally locked to ensure the high self‐confining properties of SikaProof® Bentonite.

  • BRANZ Appraised (Appraisal No. 612 [2008] )
  • Rugged and durable needle‐punched geotextile
  • Can be installed in almost any weather
  • High shear resistance, less prone to damage on site
  • Self healing membrane if ripped or punctured
  • Waterproof
  • Excellent chemical resistance
  • Will swell into and seal cracks that form in concrete
  • Can be applied directly to piled basement walls and existing property lines