Hydropel Grout
Hydropel Grout

Hydropel Grout

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Krystol Waterstop Grout is a crystalline grout used to create an internal or external waterstop at construction joints, pipe penetrations, tie-holes and control joints.

Krystol Waterstop Grout contains fiber reinforcements that reduce shrinkage and limit cracking. It is typically used in conjunction with Krystol Waterstop Treatment™ as part of the Krystol Waterstop System.


Krystol Waterstop Grout contains Krystol technology. When applied to concrete, Krystol chemically reacts with water and un-hydrated cement particles to form insoluble needle-shaped crystals that fill capillary pores and micro-cracks in the concrete and block the pathways for water and waterborne contaminants. Any moisture introduced over the lifespan of the concrete will initiate crystallization, ensuring permanent waterproofing protection.


  • Multi-use –internal or external waterstop
  • Permanent crystalline waterproofing and protection
  • Crack Resistant
  • NSF 61 certified; safe for contact with potable water
  • Durable; resistant to rain, foot traffic and shifting
  • Allows for flexible scheduling; Concrete can be placed / keyways can be filled days or weeks after installation


Use Kryton’s joint waterproofing system to waterproof and protect:

  • Static concrete-to-concrete joints where there is any concern regarding water penetration
  • Preplanned and unintended shotcrete cold joints
  • Crack control joints