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OMG Roofing Products OMG Hercules Aluminum RetroDrain 3", 4", 5" or 6" – Cast Aluminum Retrofit Roof Drain, Mill Finish
Regular price $414.19OMG Roofing Products OMG Hercules Aluminum RetroDrain 3", 4", 5" or 6" – Cast Aluminum Retrofit Roof Drain, Mill Finish
The OMG Hercules Aluminum RetroDrain replaces or adds roof drains from the rooftop without disturbing building occupants. It features a one-piece spun aluminum body, heavy-duty cast aluminum strainer dome and clamping ring, and U-Flow Seal technology for a mechanical watertight connection to PVC or cast iron pipes. Sold as one piece each, mill finish, in 3", 4", 5" and 6" sizes.
Key Features:
- Retrofit Installation: Installs easily from the rooftop, saving time and money without disturbing occupants.
- Spun Aluminum Body: One-piece spun aluminum body provides strength and durability.
- Cast Aluminum Dome: Heavy-duty cast aluminum strainer dome and clamping ring will not rust for long-term performance.
- U-Flow Seal Technology: U-Flow Seals exceed the ANSI/SPRI RD1 (introduced in 2004) standard for a secure, watertight connection.
- PVC or Cast Iron Pipe: Mechanically seals to existing PVC or cast iron drain pipes to prevent water backup damage.
- Four Pipe Sizes: Available in 3", 4", 5" and 6" sizes, all mill finish aluminum.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | OMG Roofing Products |
| Sell unit | 1 drain |
| Product line | OMG Hercules RetroDrains |
| Available sizes | 3", 4", 5", 6" (4 variants) |
| Material | Aluminum (one-piece spun body; cast aluminum strainer dome and clamping ring) |
| Color / finish | Mill |
| Seal technology | U-Flow Seal, mechanical watertight connection to PVC or cast iron pipes |
| Approvals | U-Flow Seals exceed ANSI/SPRI RD1 (2004) standard for secure watertight connection |
| Intended use | Retrofit roof drain installation on low-slope roofs |
| Category | Commercial Roofing > Drains & Scuppers |
| Assembly | Assembled drain unit with strainer dome and clamping ring |
Fit and Compatibility:
Connects mechanically to existing PVC or cast iron drain piping via the U-Flow Seal; choose the drain size to match the pipe diameter (3"–6"). Compatible with typical low-slope membrane roof assemblies for retrofit drain replacement.
Frequently Asked Questions (FAQ):
Q: What pipe sizes does the RetroDrain fit?
A: It is offered in 3", 4", 5" and 6" sizes to match existing PVC or cast iron drain pipes.
Q: Do I have to work inside the building to install it?
A: No. It is designed for easy installation from the rooftop without disturbing occupants.
Q: Will the drain rust?
A: No. The cast aluminum strainer dome and clamping ring will not rust, supporting long-term durability.
Q: What makes the connection watertight?
A: U-Flow Seal technology forms a mechanical watertight connection to the pipe and exceeds the ANSI/SPRI RD1 standard.
Q: What is included?
A: One drain assembly with spun aluminum body, cast aluminum strainer dome and clamping ring in the selected size.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
RetroDrains are the go-to choice when replacing failed cast-iron drains in occupied buildings, since all work happens on the rooftop. Match the drain size to the existing pipe and inspect the pipe edge before setting the U-Flow Seal for a clean sealing surface. Coordinate flashing and membrane tie-in with the roofing manufacturer's details to keep the assembly watertight.
Follow OSHA fall-protection requirements when working near roof openings and keep drain covers in place until the installation is complete.
Order the OMG Hercules Aluminum RetroDrain in the pipe size you need today.
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