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TRI-BUILT Hercules RetroDrain, 3 in. Diameter, Aluminum Roof Drain
Regular price $360.60Orders start at $399 — combine any items to reach the minimum. Learn more
TRI-BUILT Hercules RetroDrain, 3 in. Diameter, Aluminum Roof Drain
The TRI-BUILT Hercules RetroDrain is a 3 in. diameter aluminum retrofit roof drain for replacing or upgrading drains on existing low-slope roofs. Made of aluminum for corrosion resistance, it weighs about 27 lb and is sold individually. It complies with ANSI/SPRI RD-1.
Key Features:
- Retrofit design: RetroDrain design installs over existing drains without extensive demolition.
- 3 in. diameter: 3 in. outlet diameter for standard retrofit applications.
- Aluminum body: Aluminum construction resists corrosion.
- ANSI/SPRI RD-1: Complies with ANSI/SPRI RD-1.
- Heavy-duty build: Weighs approximately 27 lb, reflecting a robust drain body.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | TRI-BUILT |
| Manufacturer model | HDAL3A-TRI |
| Sell unit | 1 drain |
| Product line | Hercules RetroDrain |
| Diameter | 3 in. |
| Material | Aluminum |
| Applicable standards | ANSI/SPRI RD-1 |
| Weight | 27 lb |
Fit and Compatibility:
Designed for retrofit installation into existing roof drain openings on low-slope roof systems; confirm flashing and membrane compatibility with your roofing system before ordering.
Frequently Asked Questions (FAQ):
Q: What size is this drain?
A: It has a 3 in. diameter outlet.
Q: What is it made of?
A: The drain is constructed of aluminum.
Q: What does RetroDrain mean?
A: It is designed to retrofit over existing drains, reducing tear-out during reroofing.
Q: Is it code compliant?
A: It complies with ANSI/SPRI RD-1.
Q: How heavy is it?
A: It weighs approximately 27 lb.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
RetroDrains shine on reroofs where pulling the original cast-iron drain is impractical; the 3 in. aluminum unit ties into new membrane with the proper flashing clamp and sealant per the manufacturer's instructions. Verify pipe size and drain bowl condition before ordering, and confirm drainage area per drain against code. Note the dealer sheet lists a 4 in. description for the family, so confirm outlet sizing for your job.
Roof drain replacement involves opening the membrane; ensure the work area is watertight at the end of each day and follow local plumbing and roofing codes.
Order the TRI-BUILT 3 in. aluminum Hercules RetroDrain for your next reroof.
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