HYDROSTOP® HydroFiber Bulking Agent


HydroStop® HydroFiber Bulking Agent is used in conjunction with either HydroStop® PremiumCoat® Foundation Coat, PremiumCoat® Finish Coat, BarrierGuard® Waterproofing, or FlexCoat Wall Coating as a bulking agent. The product is comprised of glass fibers which, when mixed with one of above listed products, will create a thick workable compound. The HydroStop® HydroFiber Bulking Agent mixture can be used to fill voids, level surfaces, and create cants, as well as many other uses. The HydroStop® BarrierGuard® System or HydroStop® PremiumCoat® System must be installed over any repaired area using this product.


  • Gray amorphous fiber.


  • Used to bulk up HydroStop® PremiumCoat® Foundation Coat or HydroStop® BarrierGuard® Waterproofing

Compatible Substrates

  • Metal
  • Concrete
  • LWC
  • Single-Ply
  • TPO
  • PVC
  • EPDM
  • Asphalt
  • BUR
  • Mod Bit
  • Wood
  • Rubber


All documents are U.S. English unless otherwise noted

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