Roof Drains Josam's roof drains include Large Sump, Medium Sump, Small Sump, Sill Type, Promenade Top, Parapet Type, Flow Control Type, Overflow Type, and Green Roof Drains. They feature the WEJLOC® clamping system. The design includes a gravel stop that prevents roof debris from entering the drain, ensuring complete drainage through "V" notch weirs while offering secure flashing with a positive non-puncturing bond to mating flange of collar. Filter by Large Sump Medium Sump Small Sump Sill Type Promenade Top Parapet Type Flow Control Type Overflow Type Green Roof Drain Miscellaneous Roof Drains & Accessories PVC Roof Drain Body 21500 – Roof Drain: Large Sump, Clamp Ring & Poly Dome 21500-AE – Roof Drain: Large Sump with -AE Threaded Adjustable Extension 21500-AER – Roof Drain: Large sump with -AER Adjustable Extension using Threaded Rods 21500-FG2 – Roof Drain: Green Roof Drain, Plaza Drain Round Top, Large Sump Body, Bottom Out 21500-FG3 – Roof Drain: Green roof drain, large sump, wide roof flange, bottom outlet 21500-IRMA – Roof Drain: Large Sump with Perforated Stainless Steel Extension 21500-ORDG1 – Roof Drain: Green Roof Type with Perforated Standpipe 21500-Q261 – Roof Drain: Green Roof Drain, Large Sump, Large Dome, Perforated Standpipe 21500-Q515 – Roof Drain: Green Roof Drain, PVC Standpipe and Brass Dome 21500-Q600 – Roof Drain: Green Roof Drain, Planting Area, PVC Standpipe, SS Mesh Covered Dome 21500-Q601 – Roof Drain: Green Roof Drain, Plaza/Planter, Perforated PVC Standpipe 21500-Q602 – Roof Drain: Green Roof Drain, Planting Area, PVC Standpipe, Top Section is 32100 21500-Q605 – Roof Drain: Green Roof Drain, Plaza/Planter, Perf Standpipe, Mesh Covered Dome 21500-Q606 – Roof Drain: Green Roof Drain, Planting Area, Uses a 2450X-27 Series 21500-Q700 – Roof Drain: Green Roof Drain, Subsurface with Standpipe/Dome, PVC Perf Standpipe 21500-Q91 – Roof Drain: Green roof drain, overflow drain, large sump/flange 21500-RDG1 – Roof Drain: Green Roof Type with Perforated Standpipe 21500-RDG2 – Roof Drain: Green Roof Type with Stainless Steel Secured Cover 21500-RDG3 – Roof Drain: Green Roof Type with Internal Cast Iron Dome 21500-16 – Roof Drain: Large Sump with -16 Internal Waterguard for Overflow Drains 21500-19 – Roof Drain: Large Sump with -19 Stainless Steel Gravel Guard 21500-6 – Roof Drain: Large Sump with -6 Extra Wide Flange Drain Body 22500 – COMBINATION DRAIN/OVERFLOW, LARGE SUMP 23500 – Roof Drain: Large Sump w/14" Square C.I. Promenade Top 23500-AE – Roof Drain: Large Sump, Promenade Top with Adjustable Extension 23510 – Roof Drain: Large Sump w/14" Dia. Extra Heavy Duty C.I. Parking Grate 24030 – Roof Drain: Composition Deck Flange, 11-3/4" C.I. Grate & Membrane Clamp 24050 – Roof Drain: Garage Drain with Wide Support Flange 24060 – Roof Drain: Special-Duty, Composition Deck 24200 – Promenade Drain: Removable S.S. Filter, Bonding Flg, C.I. Top 25500 – Flo-Septor: Large Sump, Clamp Ring & Solid Water Dam, Cast Iron 28600 – Flo-Set Roof Drain: Calibrated Vane Collar, Clamp Ring & C.I. Dome 29000 – Roof Drain: Isolation Deck Drain with Non-Puncturing Clamp Ring for Standpipe 29100 – No-Hub Outlet Roof Drain 29112 – 12" Outlet Roof Drain
