Armstrong Flooring FlexStrong 1-Quart Shale Acrylic Premix Grout

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FlexStrong Shale Acrylic Premix Grout, 1-Quart

Ready-to-use, sanded acrylic grout in Shale delivers uniform color and stain resistance for indoor installations. Its flexible, premixed formula minimizes cracking and needs no sealing, ideal for vinyl floors and kitchen backsplashes.


Key Features:

  • Premixed Convenience: Use straight from the tub—no mixing, less mess
  • Flexible, Crack-Resistant: Formulation helps absorb slight floor movement
  • Color Consistency: Uniform Shale hue across the installation
  • Low Maintenance: Stain resistant and no sealing required
  • Versatile Joint Sizes: Suitable for 1/16-in to 1/4-in grout joints

Specifications Table:

Specification Details
Series Name FlexStrong
Type Acrylic premix, sanded
Color/Finish Family Black
Manufacturer Color/Finish Shale
Unit of Measure Quart(s)
Unit of Measure Quantity 1.0
Maximum Coverage Area (Sq. Feet) 84
Use Location Indoor
For Use with Vinyl Floors Yes
For Use with Bathroom Floors Yes
For Use with Bathroom Walls Yes
For Use with Kitchen Backsplashes Yes
For Use with Kitchen Counters No
For Use with Fireplace Exteriors No
For Use with Garage Floors No
For Use with Garage Walls No
For Use with Patios No
For Use with Pools No
For Use with Shower Floors No
For Use with Shower Walls No
Freeze Resistant Post Installation No
Mold Resistant Yes
Sanded/Unsanded Sanded
Sealing Required No
Stain Resistant Yes (no additive required)
Warranty None
CA Residents: Prop 65 Warning(s) Yes

Frequently Asked Questions (FAQ):

Q: Is this grout suitable for showers or outdoor areas?
A: No—interior use only and not for shower floors or walls, patios, or pools.


Q: Do I need to seal the grout after installation?
A: No sealing is required.


Q: How soon can the area be used after grouting?
A: It’s ready for light traffic in 24 hours.


Q: Which joint widths can it be used with?
A: Designed for 1/16-in, 1/8-in, 3/16-in and 1/4-in joints.


Q: What surfaces is it compatible with?
A: Suitable for vinyl floors and kitchen backsplashes; not for garage floors or counters.


A Deep, Modern Shale Statement for Seamless Floors

FlexStrong in Shale brings a moody, sophisticated depth that elegantly frames each tile line for a tailored, high-fashion finish. The uniform color and fine sanded texture create a clean, continuous rhythm underfoot. Pair it with matte charcoal tiles and warm brass accents to strike a bold, balanced contrast. It’s the effortless, polished grout choice that elevates everyday spaces into refined luxury.


Choose FlexStrong Shale today for a faster, cleaner grout job with lasting, uniform results.

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