Root Resistance


Our product family Preventol® B offers long-lasting and reliable protection against root penetration of roofing and waterproofing bitumen or bituminous materials. Preventol® B5 for example provides security against root penetration without damaging the plants and meets the specific requirements for the sealing of green roofs.

Our products for root resistance



  • Oily liquid of approx. 94 % 2-(4-chloro-2-methylphenoxy)-propionic acid octyl ester
  • For the production of root-resistant bituminous construction materials such as roofing felts for green roofs, sealants, insulations and asphalt mixtures.
  • Protects construction materials from undesirable root penetration without damaging plants.
  • Provides long-term protection.