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Grout Joint Whitening for Quarry or Mexican Tile or Stone

Whitening of the grout joints is also called efflorescence. This can occur for the following reasons: salts from the Portland-based materials in the setting or grout are migrating to the surface by capillary action; if well water is being used to clean the tile, it may contain soluble salts; if water is softened before use, it may contain sodium chloride, which leaves a residue; the setting for the tile was not fully cured before it was cleaned; there was an excess of water in the grout mix; or the grout cured too fast. Solutions to each of these causes are listed below.

Cause: Salts from Portland-based materials in the setting or grout are migrating to the surface by capillary action. Solution: Clean the area with a 3% hydrochloric acid, and wait 10-14 days. Pre-wet grouting before cleaning.

Cause: If well water was used to clean the tile, some may contain soluble salts. Solution: Treat the water before using it to clean the floors, or neutralize the salts with vinegar.

Cause: If the water was softened before use it probably contains sodium chloride, which leaves a residue. Solution: Treat the water before using it to clean the floors or neutralize the salts with vinegar.

Cause: The setting bed was not completely cured before it was cleaned. Solution: Remove and regrout tile.

Cause: There was an excess of water in the grout mix. Solution: Remove and regrout tile. Use a minimum amount of water per the manufacturer’s recommendation and damp cure it for 72 hours to ensure a slow uniform cure.

Cause: Grout cured too fast. Solution: Remove and regrout tile. Use a minimum amount of water per the manufacturer’s recommendation and damp cure it for 72 hours to ensure a slow uniform cure.

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  1. Unitex® Surface Renew® Grout Brightener
    Unitex® Surface Renew® Grout Brightener

    Wish you could impress your customers by returning their tile and grout to that just-installed look? Well you can thanks to Unitex Surface Renew Grout Brightener! This acid-based formulation brightens concrete, tile, and grout with mild acid etching.

    • Effectively removes mineral deposits, rust stains, and more!
    • Brightens concrete, tile, and grout
    • pH: < 1.0
    • For use on tile and grout
    • Variable dilutions

    Starting at $35.48

  2. StoneTech® Restore Acidic Cleaner
    StoneTech® Restore Acidic Cleaner

    Restore cleans away hard water deposits, grout haze, efflorescence and soap scum. For use on ceramic and porcelain tile, granite, slate, sandstone, and grout.

    • Cleans away hard water deposits, grout haze, and soap scum
    • Makes tile and grout look new
    • pH: < 1.0
    • For use on ceramic tile and grout
    • Variable dilutions

    Starting at $144.00

  3. Diversey Easy Paks® Neutralizer Conditioner/Odor Counteractant
    Diversey Easy Paks® Neutralizer Conditioner/Odor Counteractant

    Easy Paks Neutralizer Conditioner/Odor Counteractant contains a special counteractant formula that neutralizes alkaline residues after floor stripping. Use these packs for assurances every time you clean an alkaline-sensitive surface or surface featuring a high-gloss finish. It won't mar, dull, or leave a haze—just clean, beautiful floors.

    • Neutralizes residue after floor stripping
    • Great for removing ice melt residue!
    • pH: 7.0
    • Multi-surface use
    • Dilute 1 packet per 3 gallons of water

    Starting at $34.56

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