Professional-grade, water-based penetrating sealer that delivers advanced stain protection while preserving the natural appearance of stone, tile, masonry, and grout. Enhanced with antimicrobial technology, it helps inhibit the growth of bacteria, mold, and mildew.
Brand: StoneTech
Availability: Sold In Store - Ships From Store (More Info)
Shipping: Standard (More Info)
Laticrete StoneTech Heavy Duty Water-Based Sealer is engineered to provide long-lasting protection for natural stone, tile, masonry, and grout without altering the surface’s natural appearance. Its penetrating, breathable formula delivers advanced resistance to oil- and water-based stains while allowing moisture vapor to escape.
Built with antimicrobial protection, this sealer actively helps prevent the growth of bacteria, mold, and mildew that can cause staining and odors. Safe, low odor, and VOC compliant, StoneTech Heavy Duty Sealer is ideal for interior and exterior applications such as granite countertops, tile floors, walls, and masonry surfaces where durable, professional-grade protection is required.




Laticrete StoneTech Heavy Duty Sealer is a reliable solution for protecting stone, tile, and grout while preserving their natural appearance. Its penetrating, breathable formula delivers strong resistance to oil- and water-based stains, making it ideal for high-traffic and high-use areas. Built-in antimicrobial protection helps prevent bacteria, mold, and mildew, keeping surfaces cleaner and fresher over time. With a water-based, low-odor, VOC-compliant formula and long-term performance backed by a 25-year guarantee, this sealer is a smart professional-grade investment for both indoor and outdoor applications.




Stone, tile and grout can vary in porosity. Common food and beverage spills can absorb into the surface and leave permanent stains. Prevent stains using a sealer such as StoneTech BulletProof Sealer which provides maximum stain protection on the most porous surfaces. Coasters, trivets, rugs and mats are always recommended.


Avoid using all-purpose cleaners not specifically designed for stone. Some all-purpose cleaners (i.e. bathroom, grout and tub cleaners) may contain acid (vinegar) or alkaline (bleach or ammonia). StoneTech Stone and Tile Cleaner is pH neutral and specifically formulated to properly clean stone, tile and grout.


For heavily used countertops or dense stones, a 2-in-1 cleaner and sealer such as StoneTech Revitalizer Cleaner and Protector is a great option. It cleans common messes while protecting against water and oil based stains.


When resealing your grout, first clean it with StoneTech Heavy Duty Tile and Grout Cleaner to allow sealer to properly penetrate into the grout.
Mineral deposits, soap scum, mold and mildew can quickly build up in wet areas such as the bath and showers. Frequent cleaning with StoneTech Stone and Tile Cleaner or StoneTech Revitalizer Cleaner and Protector and using a squeegee or dry cloth after each use will minimize residues.
| SKU | L-ST HD |
|---|---|
| Weight (lbs.) | 1.08 - 46.00 |
| Non-Returnable | Yes |
| Manufacturer | StoneTech |
| Warranty | Limited Warranty Upon Manufacturer Inspection |