Zurn Z100 Roof Drain Kit

$325.00 $300.00

Your Zurn Roof Drain Z100 Purchase Includes

  1. Roof drain sump pan(s)
    •    18 gauge galvanized sheet metal
    •    hardware kit (drain to pan connection)

Flat roof drain (primary)

    •    100% cast iron including the dome
    •    2″ – 4″ pipe outlet (for this kit)
    •    no-hub connection
    •    rust resistant coating
    •    Standard grade no-hub coupling


Please select your desired pipe size



Thank you for your interest in the Zurn Roof Drain Z100 Kit

With the Zurn Roof Drain Z100 Kit, you are on your way to a FAST and EASY roof drain installation project with superior grade, 100% high quality roof drain sump pans and bullet proof flat roof drains. Both will provide years of trouble free service and SAVE you thousands on future roof repairs.

Common applications are commercial, industrial, institutional buildings etc. Any structure with a large surface area would require this roof drain. Joist must be 24″ on center minimum.

Zurn Roof Drain Z100

Zurn Z100 primary cast iron roof drain

  • Has a 15″ diameter bowl and is available in 2″- 8″ bottom outlet pipe sizes in a no-hub and threaded connections.  
  • Each roof drain has a cast iron membrane clamp (flashing ring) which compresses to make a water tight seal between the membrane clamp and the roof drain bowl. 
  • Each roof drain has a dome or leaf grate that prevents debris from entering the roof drain. It twist locks into the membrane clamp. It is 5-1/2″ high. 

Roof Drain Sump Pan LSP

  • Roof drain sump pan LSP is a superior grade, versatile roof drain sump pan that is designed to “sump”, or lower the large single roof drain and make standing rainwater disappear forever on your flat roof.
  • It is fabricated from stout 18 gauge galvanized steel on modern laser fabrication machines. This results in a superior grade product that results in perfect fitment, every time.
  • The sump pan’s dimensions are 30.5″ L x 30.5″ W
  • The sump dimensions are 19.18″ x 19.18″ x 2.6″ deep sump.
  • The flange dimensions are 6.0″ on each side
Model LSP roof drain sump pan is designed to lower or sump a 15" cast Iron roof drain
Superior grade model LSP roof drain sump pan


    • Your kit includes our patented roof drain sump pan which automatically lowers or “sumps” your roof drain 2-1/2″ lower than your roof surface. It will automatically become the lowest point on the roof. It also eliminates the need to build a wood sump box, a MAJOR time saver for any contractor.
  • The sump pan lowers the roof drain which prevents standing rainwater from forming on your flat roof and the resulting extensive damage it creates. There is no other sump pan that provides this feature.
  • Here is more info for you:  INSTALLATION BASICS

Zurn Roof Drain Z100 Kit UPGRADES:

Flat Roof Drains:

Zurn Z100 Drain Kit


  • Threaded outlet
  • Larger pipe sizes
  • Call for pricing

Upgrade To Specialty No Hub Couplings If…

Specialty no hub couplings

  • You will be using plastic or steel pipe, it is recommended to use specialized couplings as they transition from cast iron (on the roof drain) to plastic or steel pipe.
  • Once you use this kit, we think you will like the quality and ease of installation and hope you will visit us again! Leave us a comment.
  • No-Hub Specialty


Get tech info here…

Zurn Z100 Drain Kit


Additional information

Weight 40 lbs
Dimensions 32 × 32 × 10 in
Pipe Size

2 inch, 3 inch, 4 inch


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