HMK Silane Impregnator

HMK S731 Silane Impregnator Product Image

HMK Silane Impregnator

Regular price $37.95 Sale price $34.16 Save $3.79
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HMK® S731 Silane Impregnator is a high-performance, ready-to-use sealing solution designed specifically for the protection of all absorbent natural and artificial stones. Suitable for both indoor and outdoor applications, this product effectively reduces water and dirt penetration, thereby minimizing potential frost damage and prolonging the life of your stone surfaces. With its silane base, HMK® S731 ensures robust protection while maintaining the natural aesthetics of the stone with minimal to no change in appearance.

Key Features:

  • Material Compatibility: Effective on all types of natural stone, artificial stone, concrete, and unglazed bricks.
  • Ease of Use: Ready to use with no prior mixing needed; can be applied with a natural bristle brush or specialized sealing brushes like HMK® Z950 and HMK® Z951.
  • Vapor Permeability: Allows the stone to breathe, preventing any moisture-related degradation.
  • Interior and Exterior Use: Versatile usage for various environmental conditions without compromising efficacy.
  • Aesthetic Preservation: Leaves little to no change in the appearance of treated surfaces, maintaining the natural look of the stone.


  • Enhanced Durability: Reduces the likelihood of water and dirt ingress and the associated risks of frost damage and staining.
  • Protective Coverage: Offers a coverage range of 325 sq ft to 600 sq ft per unit, ensuring wide-ranging surface protection with minimal product use.
  • Environmental Suitability: Can be applied in a range of temperatures (between 50°F and 80°F) and is suitable for both dry and humid conditions.
  • Safety and Health Compliance: Includes clear warnings and guidelines to ensure safe application and handling, emphasizing the need for proper ventilation and protective measures during use.

Important Considerations:

Before application, it is crucial to ensure that the surface is thoroughly cleaned with HMK® R155 Intensive Cleaner and allowed to dry. The surface must be chemically clean and dry prior to application to maximize the effectiveness of the impregnator. Testing the product on a small, inconspicuous area before full application is recommended to ensure compatibility and performance.

For ongoing maintenance, HMK® P324 Liquid Stone Soap is recommended to maintain the integrity and appearance of the sealed surfaces.

Note: HMK® S731 should not be applied to rubber, plastics, varnished surfaces, or any surfaces that are solvent intolerant. Regular post-application care includes protecting the treated area from rain and humidity for at least three days.

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