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Verni-Waterstop

Expanding Concrete Joint Waterstop

Verni-Waterstop RX is a sodium bentonite based waterstop designed to stop water infiltration through cast-in-place concrete construction joints by expanding upon contact with water to form a positive seal against the concrete. The key to Verni-Waterstop RX’s effectiveness is its 75% sodium bentonite content which provides superior expansion to seal and fill voids and cracks in the concrete. Verni-Waterstop RX is an active bentonitelbutyl rubber based waterstop that is designed to replace passive PVC/rubber dumbbell waterstops, thereby eliminating the requirement of special pieces, split forming and seam welding. Verni- Waterstop RX has been successfully tested by independent testing firms to over 200 feet (60 meters) of hydrostatic water pressure, under both continuous immersion and wet/dry cycling. Verni-Waterstop RX is certified by NSF International to conform with the requirements of NSF Standard 61 – Drinking Water System Components – Health Effects. Verni-Waterstop RX is certified as a sealing material for concrete construction joints in potable water tanks.

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