This anti-backup drain is designed to manage water discharge from EPDM flat roofs while helping to prevent backflow into the drainage system. The unit is installed through the roof structure to form a controlled outlet point for rainwater run-off.
The design functions to reduce the risk of standing water or overflow by maintaining effective drainage at roof level. It is manufactured for compatibility with the ClassicBond EPDM system and is used in conjunction with membrane detailing components to create a watertight installation.
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