Product #

Upgrade your grout’s performance with stain and Microban® antimicrobial protection!


Product Overview

Grout, seal and defend in one easy step with STONETECH® GroutUp™ Additive. This grout additive upgrades your grout's performance to prevent stains and the continuous growth of bacteria, mold and mildew. Infused with STONETECH Fluoro-Sealer Technology, this water-based formula repels water and oil-based stains on sanded and unsanded cement-based grout.

Microban® antimicrobial technology enables this additive to further inhibit the continuous growth of stain and odor causing bacteria, mold and mildew. Simply replace the water instructed for use in grout mixing prior to installation and save time necessary for post grout sealing.

For added performance, STONETECH GroutUp Additive can be used with 1500 Sanded Grout, 1600 Unsanded Grout and PERMACOLOR® Grout.


Features & Benefits

  • STONETECH Fluoro-Sealer Technology - Advanced protection against water and oil-based stains
  • Microban® Antimicrobial Protection - Inhibits the continuous growth of bacteria, mold and mildew§
  • Time Saving Solution - Grout, seal and defend in one easy step
  • Grout Color Consistency - Does not alter grout color
  • Easy to Use Grout Additive - Simply replaces the water used in mixing
  • Water-Based Formula - Better for you and the environment
  • § Antimicrobial technology is not designed to protect users against disease causing microorganisms. Normal cleaning practices should be maintained.

Product Specifications


Product # ST339-0XXX
Patent #(s)
Available Colors
Part of System LATICRETE®
Country Availability Canada, United States
Substrates Grout, Sanded Cement Base Grout, Unsanded Cement Base Grout
Packaging Summary


  • ST339-0464M: 64 fl oz (1.9 L) Bottle - 4 / case
  • ST339-0627M: 27 fl oz (798 mL) Bottle - 6 / case
  • ST339-0103M: 2.5 gal (9.5 L) Bottle - 1 unit 

Available Warranties

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