The Watts RD-100-R is an overflow roof drain engineered for commercial roof systems where a defined relief point is needed. It features an epoxy-coated cast iron body, a flashing clamp, an integral 2-inch external water dam, a self-locking polyethylene dome, and a standard no-hub outlet.
Key Features
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Designed for overflow roof drainage applications with a 2-inch high external water dam
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Epoxy-coated cast iron construction for durability and corrosion resistance
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Flashing clamp assists secure integration with roof membrane
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Self-locking polyethylene dome to protect against debris and resist UV degradation
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Standard no-hub outlet (with other outlet options available)
