STONETECH® Heavy Duty Grout Sealer
Product #
Discontinued September 2025. For similar performance, use Heavy Duty Sealer as the recommended replacement.
A water-based, penetrating grout sealer that provides advanced stain and antimicrobial product protection.
Product Overview
STONETECH® Heavy Duty Grout Sealer is a water-based penetrating grout sealer that offers advanced stain and antimicrobial product protection on grout surfaces. Designed to keep grout looking newer longer, it protects against oil and water-based stains and inhibits the continuous growth of bacteria, mold and mildew.
STONETECH Heavy Duty Grout Sealer is a natural look water-based grout sealer that does not alter the appearance of the grout. A safer professional-grade solution for you and the environment when compared to high-VOC solvent-based sealers. Use this grout sealer to inhibit the growth of mold on grout. Great for use on sanded and non-sanded cement-based grouts with natural stone, tile, and masonry surfaces in interior and exterior applications. Comes with a 25-year satisfaction guarantee.
Discontinued September 2025. For similar performance, use Heavy Duty Sealer as the recommended replacement.
Info and Guides
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Product Datasheets
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Warranties
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Marketing Information
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Safety Datasheets
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Approvals and Certifications
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Installation Information
Features & Benefits
- Advanced Stain Protection - Offers heavy duty protection against oil and water-based stains
- Antimicrobial Technology - Inhibits the continuous growth of bacteria, mold and mildew§
- Penetrating, Natural Look Sealer - Preserves the original look of the grout
- Water-Based Formula - Better for you and the environment
- Low odor, non-flammable, weather resistant - Great for interior and exterior use For cement-based (sanded and non sanded) grout used with natural stone, ceramic tile, and porcelain tile.
- Note: STONETECH Heavy Duty Grout Sealer built with Microban antimicrobial product protection can be combined for use with previous versions of the product to obtain stain protection performance. For antimicrobial product protection, use STONETECH Heavy Duty Grout Sealer with antimicrobial protection.
§Antimicrobial technology is not designed to protect users against disease causing microorganisms. Normal cleaning practices should be maintained.
Product Specifications
Details
| Patent #(s) | |
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| Available Colors/Finishes | |
| Part of System | LATICRETE® |
| Country Availability | Canada, United States |
| Substrates | Grout, Grout (Cement-based grout for natural stone) |
| Packaging Summary |
US ST306-1202: 2 fl oz (59 mL) Sample - 12 units / case ST306-0624: 24 fl oz (709 mL) Spray Bottle - 6 units / case ST306-0632: Quart /32 fl oz (946 mL) Bottle - 6 units / case ST306-0401: Gallon /128 fl oz (3.8L) Bottle - 4 units / case
CANADA ST349-1216: Pint /16 fl oz (473 mL) Bottle - 12 units / case |
Available Warranties
| 25 Year STONETECH Product Warranty (US) (English) |
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