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StoneTech® Heavy Duty Grout Sealer

  • Water-based, low-solids coating
  • Mold- and mildew-resistant sealer
  • pH: 4.5
  • For use on grout
  • Coverage: 600–1,000 sq ft per gallon
Grouped product items
Product Name Price Qty
StoneTech® Heavy Duty Grout Sealer (1 GL)
Item # SC-GS-01
Gallon    Qty: 1
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StoneTech® Heavy Duty Grout Sealer, 32 oz (6 PK)
Item # SC-GS6-CS
32 oz     Qty: 6
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StoneTech® Heavy Duty Grout Sealer (4 GL)
Item # SC-GS-04
Gallon    Qty: 4
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Product Information

StoneTech Heavy Duty Grout Sealer provides heavy-duty protection for grout on ceramic and porcelain tile.


This low-solids, water-based formula protects grout (both on interior and exterior surfaces) and makes cleaning easier. It provides a mold and mildew-resistant barrier that protects grout over the long term.


Directions may vary depending on size. Always test in a small inconspicuous area with a 24-hour cure time to determine ease of application and desired results. Allow new grout installations to cure for a minimum of 72 hours prior to application. Make sure surface is clean, dry and free of waxes and coatings. Ensure that the surface temperature of the stone is between 50-80°F before sealing.


Each ready-to-use gallon covers 600 to 1,000 square feet per gallon. 


Usage Information


Basic Method:

  1. Mask off and protect any baseboards or adjacent areas to avoid splashing and overspray onto surfaces not intended to be treated.
  2. Liberally apply using a paint pad, low-pressure chemical-resistant sprayer, narrow roller or natural hairbrush, focusing on the grout joints.
  3. Allow sealer to completely penetrate into the grout, 5–15 minutes.
  4. Liberally apply a second coat following steps 2 and 3.
  5. Wipe up all sealer from the surface of the tile. Use a clean, dry, lint-free, cotton towel or mop to remove excess sealer.
  6. If sealer was not completely wiped off and a residue appears, wipe entire surface with a towel dampened with sealer. Use a white nylon pad to loosen residue and follow with a clean, white absorbent towel to remove.
  7. A full cure is achieved after 24–48 hours; foot traffic may begin in 4 hours. Cover with red rosin paper, if foot traffic must resume before the recommended time periods have passed.
  8. Clean equipment with water.


More Information
Brand StoneTech
Material Grout, Stone
Product Type Liquid
Category Sealers
Condition new
pH 4.0 - 5.0
Safety Data Sheet (SDS)
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