Figure Number: 1080

1080Overflow Roof Drain - Water Dam Type

Fitted with a combined flashing clamp and 2" high solid water dam, this corrosion resistant, Duco coated cast iron roof drain is designed for installation in flat roofs of any construction where a rooftop pool of water is used to insulate the building's interior, or on conventional roofs where an emergency overflow is needed. A polyethylene dome strainer protects drainage lines from debris.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Learn More about this warning
Shows specifications for standard configuration. Configuration options may change specifications.
  • Variations
    Adjustable Extension (Specify Fig. 1045), Expansion Joint (Specify Fig. 1710), Extension -E - (Specify Height), L-Shaped Underdeck Clamp -CL, L Speedi-Set® Service Weight - 02(50), 03(75), 04"(100) Sizes Only, LXH Speedi-Set® Extra Heavy., Secondary Flashing Clamp -C2, Sump Receiver -R, Underdeck Clamp -C, Vandal Proof - Dome - U, T Threaded Outlet, 2 1/2(64), 3(75), 4"(100) Water Dams Available -WD, (2) 3/8” (10) Tappings -TAP, Roof Deck Plate -RDP
  • Optional Materials
    Aluminum Dome -AD, Cast Iron Dome -CID, Galvanized Cast Iron -G - Body & Collar, Galvanized Cast Iron Dome -CIDG, Rough Bronze Dome -RBD
  • Product Type
    Roof Drain
Technical Drawings
1080 Roof Drain (dwg)Special Purpose Roof Drains - Water Dam Type [1080C | Caulk Outlet; 1080Y | No-Hub Outlet; 1080T | Threaded Outlet]DWG224 KB
DX1080 Roof Drain (dwg)Special Purpose Roof Drains - Water Dam Collar Type [DX1080C | Caulk Outlet; DX1080Y | No-Hub Outlet]DWG84 KB
1080-RDP Roof Drain (dwg)Special Purpose Roof Drains - Water Dame Type - Roof Deck Plate [1080C-RDP | Caulk Outlet; 1080Y-RDP | No-Hub Outlet]DWG294 KB
1080 Roof Drain (rfa)Special Purpose Roof Drains - Water Dam Type [1080C | Caulk Outlet; 1080Y | No-Hub Outlet; 1080T | Threaded Outlet]RFA740 KB
Literature / Videos
Submittal DX1080 Roof Drain (pdf)Special Purpose Roof Drains - Water Dam Collar Type [DX1080C | Caulk Outlet; DX1080Y | No-Hub Outlet] PDF552 KB
Submittal 1080-RDP Roof Drain (pdf)Special Purpose Roof Drains - Water Dame Type - Roof Deck Plate [1080C-RDP | Caulk Outlet; 1080Y-RDP | No-Hub Outlet]PDF551 KB
Submittal 1080-E Roof Drain (pdf)Overflow Roof Drain - Water Dam Collar Type with Extension [1080C-E | Caulk Bottom Outlet; 1080Y-E | No-Hub Bottom Outlet]PDF356 KB
MGI Brands Flyer (pdf)MGI Brands Flyer (pdf)PDF712 KB
MGI Corporate Brochure (pdf)Who we are, Our History, Morris Group International TodayPDF8 MB
Specifications for Roof DrainsSpecifications for Roof DrainsDOC230 KB
1080 Roof Drain (hi res jpg)Overflow Roof Drain - Water Dam TypeJPG64 KB
Technical Data for Roof DrainsTechnical Data for Roof DrainsPDF2 MB
Engineering Newsletter: Vol. 3, Issue 2 (March 2013)Fig. Nos. 1010 and 1080 Large-Capacity Roof DrainsPDF2 MB
Parts Order Guide for Roof DrainsParts Order Guide for Roof DrainsPDF5 MB
Order Guidelines for Roof DrainsOrder Guidelines for Roof DrainsPDF120 KB
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Special Purpose Roof Drains - Water Dam Type [submittal]
1080C | Caulk Bottom Outlet
1080Y | No-Hub Bottom Outlet
1080T | Threaded Outlet

Special Purpose Roof Drains - Water Dam Collar Type [submittal]
DX1080C | Caulk Bottom Outlet
DX1080Y | No-Hub Bottom Outlet

Special Purpose Roof Drains - Water Dame Type - Roof Deck Plate [submittal]
1080C-RDP | Caulk Bottom Outlet
1080Y-RDP | No-Hub Bottom Outlet

Special Purpose Roof Drains - Water Dam Collar Type - With Extension [submittal]
1080C-E | Caulk Bottom Outlet
1080Y-E | No-Hub Bottom Outlet