Armstrong Flooring FlexStrong 1-Gallon Mushroom Acrylic Premix Grout

Regular price $78.38

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FlexStrong 1-Gallon Mushroom Acrylic Premix Grout

Ready-to-use, sanded acrylic premix grout designed for durable, color-consistent joints. Ideal for indoor vinyl floors and backsplashes, it resists stains and cracking without the need for sealing.


Key Features:

  • Premixed Convenience: No mixing required—apply straight from the pail for faster, cleaner installs
  • Crack-Resistant Flexibility: Formulated to minimize cracking from slight floor movements
  • Stain Resistance: Built-in protection—no additives or sealing needed
  • Versatile Joint Sizes: Suitable for 1/16-in to 1/4-in grout joints
  • Indoor Use: Optimized for vinyl floors, kitchen backsplashes, and bathroom walls

Specifications Table:

Specification Details
Series Name FlexStrong
Type Acrylic premix
Sanded/Unsanded Sanded
Color/Finish Family Gray
Manufacturer Color/Finish Mushroom
Unit of Measure Gallon(s)
Unit of Measure Quantity 1
Maximum Coverage Area (Sq. Feet) 1080
Use Location Indoor
For Use with Vinyl Floors Yes
For Use with Kitchen Backsplashes Yes
For Use with Bathroom Walls Yes
For Use with Bathroom Floors Yes
For Use with Kitchen Counters No
For Use with Shower Floors No
For Use with Shower Walls No
For Use with Garage Floors No
For Use with Garage Walls No
For Use with Patios No
For Use with Pools No
Freeze Resistant Post Installation No
Mold Resistant Yes
Sealing Required No
Stain Resistant Yes (no additive required)
Joint Widths 1/16-in, 1/8-in, 3/16-in, 1/4-in
CA Residents: Prop 65 Warning(s) Yes
Warranty None
UNSPSC 30111500

Frequently Asked Questions (FAQ):

Q: Is sealing required after application?
A: No, this grout is stain resistant and does not require sealing.


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


Q: What joint widths does it support?
A: Use with 1/16-in, 1/8-in, 3/16-in, and 1/4-in joints.


Q: Where can it be used?
A: For indoor applications including vinyl floors, kitchen backsplashes, and bathroom walls; not recommended for showers, pools, patios, or garages.


Q: What is the color?
A: Mushroom, within the gray color family.


A Sophisticated, Seamless Finish in Mushroom Gray

This grout brings a refined, monochromatic polish to tilework, letting textures and lines take center stage. The Mushroom hue sits beautifully with cool stones and matte finishes, delivering a calm, tailored backdrop. Pair it with elongated subway tile or geometric patterns to accentuate rhythm and continuity. It’s the quiet luxury essential that perfects the room’s narrative.


Elevate your project with FlexStrong’s ready-to-use, stain-resistant performance—add it to your cart today.

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