SIKA Index Defend Antiroot 4mm (1m x 10m Roll) | WPD Group

Defend Antiroot 10 Polyester is an APP modified bituminous membrane, torch applied, with an anti root additive specially designed to be used in directly contact with the soil. It is reinforced with a heavy and dimensionally stable non-woven polyester and flexible at -10°C. The underside has a polyethylene burn-off film for easy application and the top surface finish is a polyethylene film. Thickness: ~4,0 mm.


Waterproofing membrane for:

  • Flat roofs under protective layers or ballast
  • Roof gardens
  • Sunken roof landscaping
  • Gravel covered roofs
  • Roof garden final waterproofing layer in contact with soil


  • Resistant to humic acids and fertilisers
  • Can be applied in contact with soil or where there is a risk of the membrane being damaged by roots
  • Good watertightness
  • High tensile strength
  • High elongation and cold flexibility
  • Good resistance to impact
  • Easy to install by torching method

Choice of primers to suit substrate and weather conditions.


SIKA Index Defend Antiroot PDS