Best Side Outlet Roof Drains for Modern Roof Systems
When selecting a side outlet roof drain, durability, ease of installation, and compatibility with standard piping are key. This guide highlights five top options, including heavy-duty cast iron designs and low-profile PVC choices, to help you compare performance, materials, and installation features for American roofs.
Summary of selected products:
| Product | Brand | Material | Outlet Type | Key Feature | URL |
|---|---|---|---|---|---|
| Marathon RD-200-SO Small Body Side Outlet Roof Drain | Marathon Roofing Products | Cast Iron with Epoxy Coating | Side Outlet | Flashing clamp, integral gravel stop, self-locking dome | https://www.amazon.com/dp/B0C4G3GY6F?tag=infinitepower06-20 |
| 2″ Low Profile Shower Drain with 2″ x 1-1/2″ Reducer | mucol | PVC | Side Outlet (Shower Drain Assembly) | Durable PVC body, perforated filter, corrosion resistant | https://www.amazon.com/dp/B0C3XK2Y2J?tag=infinitepower06-20 |
| JUMBO 4-Inch Heavy Duty PVC Roof Drain with Cast Iron Dome | JUMBO | Cast Iron Dome, PVC Body | DSA (Dome/Side) Outlet | 50 sq in open area, heavy-duty construction | https://www.amazon.com/dp/B0F7HNCDM7?tag=infinitepower06-20 |
| Zurn RD2130-NH3-CI – Combination Roof Drain and Overflow | Zurn | Cast Iron | No-Hub Outlet | Combination roof drain and overflow, retrofit friendly | https://www.amazon.com/dp/B00GG1SWR0?tag=infinitepower06-20 |
| Copperlab Side Outlet Roof Drain Fitting 2″ No Hub | Copperlab | PVC | Side Outlet | Overflow optional, multiple clad options | https://www.amazon.com/dp/B092PM3SXQ?tag=infinitepower06-20 |
Marathon RD-200-SO Small Body Side Outlet Roof Drain
The Marathon RD-200-SO is a heavy-duty epoxy-coated cast iron side outlet roof drain designed for harsh climates and long-term use. Construction emphasizes durability, with a flashing clamp, integral gravel stop, and a self-locking polyethylene dome as standard, plus a no-hub outlet. This combination supports reliable roof drainage with straightforward installation for many roofing assemblies.
Marathon RD-200-SO Small Body Side Outlet Roof Drain (Variant)
This listing mirrors the same Marathon RD-200-SO design, emphasizing robust epoxy-coated cast iron with standard features like a flashing clamp, gravel stop, and polyethylene dome. Its side outlet configuration supports varied roof build plans and simplifies integration with standard drainage piping, aligning with common roofing standards.
Marathon RD-200-SO Small Body Side Outlet Roof Drain (Variant)
Another listing for the same product line, reinforcing the RD-200-SO’s applicability in side-outlet roof drain scenarios. The design emphasizes weather resistance and modular components—ideal for installations requiring a secure drain with simple upgrades or replacements in the field.
JUMBO 4-Inch Heavy Duty PVC Roof Drain with Cast Iron Dome
JUMBO’s 4-inch PVC roof drain features a cast iron dome and a durable PVC body. The dome-style strainer is bolted to the gravel guard, and the design includes brass and stainless steel fasteners for long-term corrosion resistance. With a 50-square-inch open area, this model supports efficient water removal from larger roof surfaces while resisting debris buildup.
Zurn RD2130-NH3-CI – Combination Roof Drain and Overflow
The Zurn RD2130-NH3-CI is a combination roof drain and overflow unit designed for new construction and retrofit use. It ships as a complete, assembled system and uses a no-hub outlet for straightforward installation. This model is suitable when overflow protection and a compact, integrated drain assembly are priorities.
Copperlab Side Outlet Roof Drain Fitting 2″ No Hub
Copperlab’s side outlet roof drain fitting offers a 2-inch no-hub connection, with options for overflow and multiple clad finishes. The design emphasizes a secure seal with rubber and silicone gaskets, plus a grid pattern to help prevent clogs and keep water flowing efficiently through the system.
Buying Guide: Key Considerations for Side Outlet Roof Drains
- Material and durability: Cast iron with epoxy coating provides strong corrosion resistance for long-term outdoor use, while PVC options offer lighter weight and easier handling for smaller projects.
- Outlet type and compatibility: Side outlet designs integrate with standard drainage piping; ensure the outlet size and hub/no-hub compatibility match your roof and piping layout.
- Drain capacity and area: Larger open areas (such as the 50 sq in on the JUMBO unit) handle higher rainfall volumes, reducing the risk of overflow on bigger roofs.
- Integrated features: Look for gravel stops, flashing clamps, and domes/domes with self-locking mechanisms, which simplify installation and reduce potential leaks.
- Overflow and retrofit options: Some models offer built-in overflow or are designed for retrofits, which can affect installation scope and future upgrades.
- Maintenance and accessibility: Replacing covers or domes should be straightforward; consider designs that minimize debris buildup and are easy to clean.
- Code compliance: Confirm that the product meets local building codes and roofing system requirements, including no-hub versus hubbed fittings.
- Weight and installation complexity: Heavier cast-iron models may require additional support or professional installation, while PVC options are generally lighter and simpler to install.