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Specialty Drains

Regardless of your roofing situation, chances are OMG Roofing Products has drain solution for you! We offer a host of specialty drains for use in unique roofing applications, including:

Gutter Retro Drains, for use in 9-inch wide box type gutters;
Balcony Retro Drains, for installation under paver systems or other areas with heavy foot traffic;
CaliCombo Retro Drains with Overflow, are west coast style combination drains with safety overflow.

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Product Use

Product Use

All are constructed of aluminum and available in 3- and 4-inch sizes. All offer a patented U-Flow mechanical seal for a tight connection to the drain leader, and all can be installed from the rooftop without disturbing building occupants.

OlyFlow RetroDrains are designed to replace existing drains in re-roofing applications. Installed form the roof surface, OlyFlow RetroDrains are engineered to be installed without removing the existing plumbing or fixture and feature a mechanical seal for a watertight connection to PVC or cast iron drain leaders.

As with all building materials, it is the responsibility of the installer to review product use with a design professional to confirm safety, compatibility and acceptance with the roof cover manufacturer as well as with local building codes.

Technical Data

Technical Data

Drain Body:   .080-inch thick aluminum
Seal:  U-Flow mechanical seal requires 12.5-in. U-Flow Screwdriver with #2 Robertson square socket tip.
Flange:   Various sizes depending on product.
Strainer Dome:   Various sizes. Made of .063- to .125-in. thick aluminum.

Packaging Info

Packaging Info

Gutter RetroDrains

Cat. No. Size (in) Packaging Quantity Weight (Dimensional)
GM3 3 Each 20 lbs.
GM4 4 Each 20 lbs.

Balcony RetroDrains

Cat. No. Size (in) Packaging Quantity Weight (Dimensional)
BDRM3 3 Each 20 lbs.
BDRM4 4 Each 20 lbs.

Cali-Combo Drains

Cat. No. Size (in) Packaging Quantity Weight (Dimensional)
CALIUF3 3 Each 27 lbs.
CALIUF4 4 Each 27 lbs.