Admixtures & Additives
Fentis Krystal™ Internal Membrane (FKIM)
The ultimate crystalline admixture for permanent concrete waterproofing, protection, and durability. FKIM transforms concrete into a powerful, permanent waterproof barrier by growing insoluble crystals to block pores, capillaries, and micro-cracks.
Download Data SheetWhy Choose Fentis Krystal™?
Integral & Permanent
Becomes a permanent part of the concrete matrix, and will not peel or wear away.
Self-Healing
Automatically seals hairline cracks up to 0.5mm, ensuring lifelong protection.
Enhanced Durability
Protects concrete against chemical attack and reinforcement corrosion.
Safe for Potable Water
Certified by NSF to NSF/ANSI 61 for use in potable water structures.
How It Works
When combined with water and concrete, Fentis Krystal™ chemicals react to form millions of needle-like, insoluble crystals. These crystals grow deep into the concrete mass, filling the natural pores and capillary tracts.
This process makes the concrete itself the waterproof barrier. If new cracks form due to shrinkage or settling, incoming water triggers further crystal growth, automatically sealing the crack and maintaining a watertight seal.
Resources
Download the complete technical specifications and performance data. Download PDF
Access important safety, handling, and storage information. Download PDF
Get detailed, step-by-step instructions for proper application. Download PDF
Typical Applications
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