Z100

15" Diameter Main Roof Drain

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The Zurn Z100 15" diameter roof drain has a Dura-Coated cast iron body with combination membrane flashing clamp/gravel guard and low silhouette Poly-Dome. High Performance, Next Generation Model Now Available: Z100F.

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High Performance, Next Generation Model Now Available: Z100F

Where to Buy
  • 15" diameter primary roof drain
  • Clamping collar and low silhouette Poly-Dome

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Z100
Z100
We already put it to the test

You want to be IPC confident with your roof drain specification. Sure, you can calculate the flow rate, but that’s still a guess, not a guarantee. We test drainage products in our certified state-of-the-art facility, so you have the data and assurance to back your next project.

Repair Parts

Frequently Asked Questions

​Yes, -W2, -W3, -W4 internal water dams can be added to the drain after the drain body is installed.  However, the existing clamp collar would need to be removed.  Please contact installer of water-proofing membrane to review proper installation and warranty details.

Yes, see the spec sheet featuring these two items on the website: Z100-C-EA

Yes, you can use the adjustable extension (-EA option) in combination with the static extension (-E option) to achieve a taller adjustable extension.  See the spec sheet for the Z100-E-EA: http://zurn.eriepa.us/specdrain/Product/Options/303900.pdf​

Zurn offers a full line of replacement domes for the Z100 roof drain.  The dome is offered in plastic (P100-POLYDOME-USA), cast iron (P100-DOME-CI), bronze (P100-DOME-BRZ), and aluminum (P100-DOME-ALUM).  These domes are approximately 12-1/2” in diameter, and 4-1/2” tall.  
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