Roof Drains / OlyVents

OV1WAY is OMG’s one-way aluminum roof vent from the OlyVent line, designed to allow trapped air pressure within a roof system to escape via a rubber valve while preventing ingress of rain, snow or pests. Its wide base and conical design improve flashing details and make installation easier than standard cylindrical vents. Manufactured from heavy-gauge spun aluminum and fitted with a durable Duro-Nitrile rubber valve, this vent is suitable for various roofing types, including single-ply and...

The OMG Hercules Aluminum RetroDrains (SKUs HDAL3A, HDAL4A, HDAL5A, HDAL6A) are durable retrofit roof drains designed to replace existing drains in re-roofing projects without removing the existing drain fixture. Each drain features a one-piece spun aluminum body, heavy cast aluminum strainer dome, large flange for secure membrane attachment, and a U-Flow mechanical watertight seal that connects reliably to existing plumbing (PVC or cast iron). These drains meet multiple codes and standards...

The U-Flow Screwdriver is a special-purpose tool by OMG designed to install U-Flow Seals for Hercules Retrofit Roof Drains. It features an extra-long shaft to reach recessed screws on the compression seals and includes a loss prevention bar so the tool is more secure during use. Its #2 Robertson square tip matches the low-profile, recessed head screws used in the U-Flow Seals. Key Features long 12.5-inch shaft for reaching deep screws in drain stems #2 Robertson square tip that fits the...

OV2WAY is OMG’s two-way breather roof vent in the OlyVent product line, designed to help manage both trapped air pressure and moisture within roofing assemblies. It features a Duro-Nitrile rubber valve, spun aluminum body, and wide base for effective flashing detail. The two-way design works together with one-way vents to improve ventilation and prolong roof system life in both single-ply and built-up roofing applications. Key Features allows release of trapped air plus evacuation of moisture...

The SCUPRD3, SCUPRD4, SCUPRD5, and SCUPRD6 models are part of OMG’s Scupper Thru-Wall RetroDrain product line. Designed to replace existing through-wall or side-wall drains in re-roofing applications, these drains provide a secure and watertight solution without requiring removal of existing plumbing. They feature a durable aluminum body, stainless steel hardware, a large pre-punched flange for flashing integration, and the proven U-Flow mechanical seal to connect securely to PVC or cast iron...

The HDTPO3A, HDTPO4A, HDTPO5A, and HDTPO6A models are Hercules series TPO-Flange RetroDrains by OMG, designed for retrofit roof drain projects under TPO membrane systems. They feature a one-piece spun aluminum body, a TPO-coated flange engineered for direct membrane welding, a watertight U-Flow mechanical seal to connect to existing PVC or cast iron piping, and cast aluminum strainer dome and clamping components for durability in harsh environments. These drains allow rooftop drains to be...

OMG SpeedTite RetroDrain models SPT3A, SPT4A, SPT5A, SPT6A are retrofit roof drains designed to improve drainage performance by reducing vortexing and accelerating water removal. They install from the roof surface into existing drain leaders, featuring a mechanical seal that provides a watertight connection in seconds. With sizes from 3 to 6 inches and an extra-large flange, they accommodate most field conditions and work with many roof cover types. Key Features vortex breaker reduces slow...

VTBSTR10-YW is the yellow vortex breaker strainer dome by OMG, designed to retrofit onto existing Hercules or Aluminum Classic roof drains in 3-, 4-, 5-, or 6-inch sizes. The strainer integrates vortex breaker technology in its cast aluminum dome to accelerate drainage (up to 2.5× more flow versus standard strainers), reduce “chugging” of water, and enhance performance under heavy rainfall. Its bright safety yellow finish helps visibility on the roof and marks drain locations clearly. Key...

The OMG ALDCR2A 2-inch O-Ring RetroDrain is a retrofit roof drain insert engineered to replace existing drains without removing plumbing fixtures. It features a seamless one-piece spun aluminum body, dual rubber O-rings, and an extra-large flange to secure roofing membrane flashing. It comes with a U-Flow cast aluminum strainer dome and aluminum clamping ring to maintain durability and watertight integrity. Key Features seamless one-piece spun aluminum body to eliminate leak points two rubber...