Hydrostop Grout is a non-shrink waterproof grout that is used to repair surface cracks in the concrete or mortar. Specially formulated with Kryton’s proven Krystol® technology, Hydrostop Grout form millions of needle-shaped crystals that grow in all directions to fill any capillary pores or cracks when it is combined with water. Hydrostop Grout is used in conjunction with Hydrostop Coating and Hydrostop Sealer as part of the Hydrostop Restore & Protect System™. The system is intended for above grade concrete or mortar surfaces (i.e., concrete exposed to minimal hydrostatic pressure) and has been designed to extend the lifespan of aging infrastructure and buildings.

Product Features

  • Extends the lifespan of aging concrete infrastructure and buildings as part of the Hydrostop Restore & Protect System

  • Enhances durability by preventing freeze thaw degradation and corrosion of embedded steel

  • Provides even substrate color and smoothness

  • Does not require any specialized equipment

  • Easy to install by trained applicators

  • Can be applied to damp concrete

  • Repairs and waterproofs cracks

  • Experiences high early strength and good bonding ability

  • Does not show through Hydrostop Coating

  • Reactivates in the presence of moisture


  • Delivers a permanent solution

  • Increases durability, decreasing building maintenance and repair costs

  • Improves aesthetics by maintaining the original appearance for lasting attractiveness

  • Superior performance enhancing your reputation for high quality work

  • Easy-to-use system that decreases the application costs

  • Increases environmental sustainability by extending the lifespan