KF-470 FiberMix Silicone Mastic Additive
$150.00
KoolFlex 470 FiberMix Silicone Mastic Additive is a white microfiber additive formulated to blend with Kool Coats’ silicone, transforming it into a trowel-grade silicone mastic for sealing seams, repairs, and flashing details. FiberMix enhances vertical hold, build, and cure consistency. Ideal for creating reinforced silicone details without fabric. One 5 gallon pail, makes 20 gallons of mastic.
- Creates Trowel-Grade Mastic: Mixes 1:4 with KoolFlex Silicone to form a high-build, reinforced mastic.
- Enhanced Vertical Hold: Boosts hang strength and consistency for detail work without fabric.
- Versatile Reinforcement: Ideal for flashing seams, pitch pans, and other reinforced silicone detailing.
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