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 22010 – Roof Drain: Medium Sump, Clamp Ring & Cast Iron Beehive Dome 22200 – COMBINATION DRAIN/OVERFLOW, MEDIUM SUMP 23710 – Roof Drain: Medium Sump & 11-3/8" Square Cast Iron Promenade Top 24020 – Roof Drain: Composition Deck Flange & Super-Flo Grate 24040 – Roof Drain: Composition Deck Flange and Super-Flo Grate 25520 – Flo-Septor: Medium Sump, Clamp Ring & Solid Water Dam, Cast Iron
