With integrated vortex breaker technology, the Hercules-Plus RetroDrain can provide up to 2.5 times greater water flow to reduce excessive water and weight from the roof faster. In addition, the vortex breaker can reduce “chugging” which can damage the plumbing system. The drain features a one-piece spun aluminum body, “safety yellow” cast aluminum strainer dome, and heavy duty clamping ring for strength and durability. Hercules-Plus RetroDrains incorporate U-Flow® Seal technology for a mechanical watertight connection to PVC or cast iron pipes to prevent water from backup damage. Available in 3-, 4-, 5- and 6-inch sizes.
Hercules-Plus RetroDrains are also available with a TPO or PVC coated flange for direct membrane attachment.
Interactive Comparison Chart
Drain Size Selector Tool
Hercules-Plus RetroDrains are designed to replace existing new construction drains in re-roofing applications. Installed from the roof surface, Hercules-Plus RetroDrains are engineered to be installed without removing the existing drain fixture. Hercules-Plus drains have a mechanical seal for direct connection to existing PVC or cast iron plumbing that meets the ANSI/SPRI RD-1 standard.
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 and local building codes.
The data below is constant for each Hercules RetroDrain
Superior productivity. Superior performance.