Skip to content
FREE SHIPPING ON ALL ORDERS
FREE SHIPPING ON ALL ORDERS
Zurn Z107 - 20" Wide Deck Flange

Zurn Z107 - 20" Wide Deck Flange

Zurn Z107 - 20" Wide Deck Flange

$2,366.70


FREE SHIPPING
SKU Z107-3NH

The Zurn Z107 is a wide-deck flange roof drain built for expansive roof areas where coverage, durability, and robust water management are key. Designed to accommodate large flanges and liquid-applied roof membranes, it provides reliable drainage while protecting roof assemblies from water intrusion and debris buildup. Ideal for commercial, industrial, and institutional roofing systems.

Key Features

  • Wide Deck Flange Design: Large flange size supports liquid-applied membranes and helps spread loads, reducing risk of membrane failure or leaks around the drain.

  • Heavy Cast-Iron Construction: Rugged body with a durable coating for corrosion resistance and long service life in demanding environments.

  • Clamping Collar + Gravel Guard + Low-Profile Dome: A combination clamp secures the membrane, a gravel guard keeps out debris, and the low silhouette dome maintains a clean roof profile while allowing high flow.

Downloads:

Product Codes: Z107-3IC, Z107-4IC, Z107-6IC, Z107-3IP, Z107-4IP, Z107-3NH, Z107-4NH, Z107-6NH, Z107-3NL, Z107-4NL, Z107-6NL, ZA107-3IC, ZA107-4IC, ZA107-6IC, ZA107-3IP, ZA107-4IP, ZA107-3NH, ZA107-4NH, ZA107-6NH, ZA107-3NL, ZA107-4NL, ZA107-6NL, ZC107-3IC, ZC107-4IC, ZC107-6IC, ZC107-3IP, ZC107-4IP, ZC107-3NH, ZC107-4NH, ZC107-6NH, ZC107-3NL, ZC107-4NL, ZC107-6NL,

View Our Full Selection of Zurn Drains →

Shipping

  • All items ship for free (standard ground, see map)
  • Call: (800) 604-5537 for pricing and shipping questions. Shipping estimates shown on the map pertain to this specific product only.
  • Orders typically ship in 1-3 business days. Transit times displayed in the map are listed in business days, and are approximate. The day that the order is shipped is not counted as a transit day.
NDS-Transit-Map_6d8f0af4-e4db-4159-a7a4-4ca8b8ba8710.gif__PID:713ed80e-353f-4d48-9ae6-2b8b0e0a3d58

Zurn Z107 20" Wide Deck Flange: An Overview

An in-depth look at the Zurn Z107, its features, applications, and installation considerations for commercial roofing systems.

Roof drains are a critical part of building protection, directing stormwater away from roof assemblies and preserving structural integrity. The Zurn Z107 20" Wide Deck Flange is designed to provide secure, watertight integration with roofing membranes while offering high-capacity drainage performance. In this blog, we’ll explore the Z107’s design, benefits, installation guidelines, and a case study example.

Zurn Z107 Wide Deck Flange Schematic
Zurn Z107 Wide Deck Flange Schematic

What Is the Zurn Z107?

The Z107 is a 20-inch wide deck flange roof drain designed for secure attachment to roofing assemblies. Its wide flange area improves membrane integration and reduces the risk of leaks, while the drain bowl collects and redirects stormwater into piping systems. This model is ideal for projects requiring robust, watertight performance and high-capacity drainage.

Key Features & Benefits

  • 20" Wide Flange: Provides generous surface area for membrane attachment and watertight sealing.
  • High-Capacity Bowl: Supports efficient drainage from flat or low-slope roofs.
  • Durable Construction: Built to withstand rooftop exposure, UV, and storm events.
  • Reliable Membrane Integration: Wide flange ensures secure waterproofing transitions.
  • Service-Friendly: Compatible with dome covers for debris protection and easy inspections.
Zurn Logo
Zurn Brand Quality

Applications of the Z107

  • Commercial flat roof systems
  • Institutional facilities such as hospitals and universities
  • Industrial buildings with large catchment areas
  • Projects requiring watertight integration with membranes

Installation Best Practices

To ensure long-term reliability, the Z107 must be installed with careful attention to membrane sealing and bowl alignment:

  • Position the drain at low-slope roof areas for optimal stormwater collection.
  • Ensure the 20" flange is embedded securely in roofing materials to maintain a watertight connection.
  • Apply compatible sealants and flashing to reinforce membrane integration.
  • Verify outlet piping matches hydraulic design requirements.
  • Perform regular inspections to remove debris and confirm seals remain intact.

Case Study: Industrial Facility Upgrade

Challenge: An industrial facility experienced recurring leaks around roof drain perimeters due to poor membrane integration on older models.

Solution: Engineers specified Zurn Z107 Wide Deck Flange Drains. The 20" flange allowed stronger membrane bonding and improved sealing, preventing leaks at transition points.

Outcome: The facility reported complete elimination of leakage issues, improved drainage efficiency, and reduced maintenance costs following the upgrade.

Conclusion

The Zurn Z107 20" Wide Deck Flange combines robust drainage performance with superior membrane integration. Its wide flange design, high-capacity bowl, and durable build make it a trusted solution for commercial, industrial, and institutional roofing projects requiring watertight reliability.

Frequently Asked Questions

Why does the Z107 have a 20" flange?

The wider flange provides a larger bonding area for roofing membranes, ensuring watertight integrity and reducing leak risks.

Where is the Z107 most commonly used?

It is widely used on commercial, industrial, and institutional buildings with flat or low-slope roofs.

What maintenance is recommended?

Regular inspections should be conducted to check membrane seals and clear debris from domes or strainers.