OverFlow and FlowControl

OverFlow and FlowControl

Product Descriptive Name
RetroDrain Water Flow Attachments 
Product Short Description
Spun aluminum round drain attachment for use with all RetroDrains.

Product Details

OverFlow and FlowControl

Product Short Description
Spun aluminum round drain attachment for use with all RetroDrains.

Features

OverFlow and FlowControl

Features

The OverFlow* assembly provides additional water drainage, if necessary, when water level on the roof exceeds 4" (10.16 cm) in height. It is a spun aluminum round drain attachment that is designed to be used with all RetroDrains that are supplied with a clamping ring assembly. Simple and easy to install. 

The FlowControl assembly provides a specific limited water flow rate under different water pressures (water head) on the roof, and performs as an overflow drain if the water level on the roof exceeds 4" (10.16 cm) in height. It is a spun aluminum round drain attachment with two specially designed weirs, and is compatible with RetroDrains that are supplied with a clamping ring assembly.

Material: Each is a one-piece, 0.050" (1.27 mm) spun aluminum attachment, 4" (10.16 cm) in height.

  • * OverFlow®, FlowControl®, and RetroDrain® are registered trademarks of OMG Roofing Products.

Documents

Resources

Building Owner Resources

Johns Manville offers one of the most comprehensive portfolios of commercial low-slope roofing solutions. We have a long standing dedication to providing solution-based systems for building owners.

Codes Corner

Here you will find quick links and cheat sheets to Johns Manville roofing systems code approvals and ratings. 

Guarantees and Roof Maintenance

Support services can include: conceptual product information, building science, wind uplift data, national and local code understanding, FM Global® and UL® regulations, fastening patterns and sheet layouts, installation guidelines and standard details.

Recycling Resources

Re-roofing mechanically attached or ballasted insulated single-ply systems now have the potential for recycling versus contributing to a landfill.

SmartBinder Resource Library 

Your resource for all JM documents in one place. 

Submittal Wizard

The Submittal Wizard is a tool to help you pull together the necessary documents for your submittal package.

Explore More

Commercial Roofing News

Blog

Commercial Roofing Blog

Watch On-Demand

Video Library

Roofing Video Library

Expand Your Knowledge

Training

Training Page