MAPEI Keracolor U is a premium unsanded, polymer-modified grout for narrow tile joints (1/16″–1/8″). With BioBlock® technology, it resists mold and mildew and provides smooth, durable results for interior and exterior floors and walls.
MAPEI Keracolor U Unsanded Grout with Polymer, Avalanche (25 lb)
Smooth, Professional Finish for Narrow Joints
MAPEI Keracolor U is a premium unsanded grout specifically formulated for narrow tile joints ranging from 1/16" to 1/8" (1.5–3 mm). Its polymer-modified composition ensures a smooth, creamy consistency that fills joints evenly and resists cracking, providing a flawless, professional finish on both floors and walls.
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Ideal for interior and exterior applications
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Smooth, easy-to-trowel consistency
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Fills narrow joints precisely
This makes Keracolor U the go-to choice for homeowners and contractors seeking clean, polished results on small-joint tile installations.
Enhanced Durability with Polymer Modification
The polymer-enriched formula enhances bond strength and flexibility, helping the grout withstand movement, temperature changes, and minor substrate shifts. It reduces the risk of shrinkage cracks and maintains long-lasting integrity even in high-traffic areas.
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Polymer-modified for superior adhesion
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Reduces cracking and joint separation
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Maintains durability in dynamic environments
This ensures a resilient installation that keeps tiles looking pristine for years.
BioBlock® Technology for Mold and Mildew Resistance
Keracolor U incorporates BioBlock® technology to resist mold and mildew growth, making it ideal for bathrooms, kitchens, and other moisture-prone areas. This feature enhances hygiene and reduces maintenance requirements.
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Prevents mold and mildew accumulation
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Suitable for wet areas and high-humidity environments
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Promotes cleaner, healthier spaces
Homeowners can enjoy worry-free use in showers, backsplashes, and wet-floor installations.
Versatile Interior and Exterior Performance
Keracolor U is suitable for both interior and exterior projects, providing reliable performance in a variety of conditions. Its high-quality composition and polymer reinforcement make it ideal for residential and commercial installations alike.
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Suitable for walls, floors, and backsplashes
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Works in interior and exterior environments
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Reliable for residential and commercial applications
Contractors can rely on Keracolor U to deliver consistent results across multiple project types.
Additional information
| Weight | 11.3 kg |
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| Dimensions | 36 × 25 × 11 cm |









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