When Should You Use LCP Roof Drain Sump Pan ?

Use LCP roof drain sump pan when you need to add an overflow roof drain to the primary roof drain. 

  • When you have at least 22″ of clear space between the joists that are 24″ on center, minimum. This means you can have more space, but not less. 
  • You should have approx 15″ of vertical space below the roof drain.
Commercial Project
The fully completed roof drain pan LCP installation on a wood deck with a foam roof covering. Future roof damage from standing rainwater was eliminated forever
Commercial Installation
This new construction installation was fast and easy. This was a 1 story office building that was a "build back" after the roof collapsed from excessive rainwater
Commercial Project Rough-in
Roof drain pan LCP lowered this roof drain 2' below the roof drain quickly and easily. The sturdy 18 gauge steel pan fits perfectly between joists that are 24" on center. This sump pan is best suited for large roof applications

LCP Roof Drain Pan Description

  • The versatile design of LCP roof drain sump pan accepts the Zurn Z100 combination roof drain and overflow. Soon it will accept the Jay R. Smith drain also. 
  • The sump pan’s dimensions are 45.75″ L x 30.50″ W x 2-1/2″ deep
  • The flange dimensions are 6.271″ on each side
  • It is fabricated from stout 18 gauge galvanized steel on modern laser fabrication machines. The quality fabrication results in a perfect fit!  
  • A cross brace is recommended to provide additional strength

Combination Roof Drain and Overflow Details

  • Currently this sump pan accepts Zurn brands only with the Jar. Smith brand coming soon.
  • Each roof drain has a 15″ diameter bowl. 
  • It is available in 2″- 8″ pipe sizes with various connection types.
  • The sizes on the shopping cart are 2″ – 4″ in the no hub connection. Other variations are available via special order.   
  • Each roof drain has a cast iron membrane clamp (flashing ring) which compresses the roof membrane to make a water tight seal.
  • 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. All of the domes on this site are cast iron.
  • The overflow roof drain has an external water dam that extends two inches above the roof surface. This complies with the current Uniform plumbing code requirements. 

Buy Your Roof Drain Pan LCP Kit Here...

Model LCP roof drain sump pan

Roof Drain Pan LCP

100% cast iron parts
$ 185
  • Choose from 3 packs and SAVE up to 95% on bundled shipping
Model LCP roof drain sump pan is designed to lower or sump a 15" combination roof drain and overflow

LCP Roof Drain Kit

100% cast iron parts
$ 634
  • INCLUDES: the sump pan, roof drains, hardware and no-hub couplings
hardware kit for roof drain pan

FREE hardware kit

one kit per roof drain
  • With your purchase of a roof drain and sump pan
  • mounts the roof drain to the roof drain pan
  • automatically included in your purchase
standard grade no-hub couplings

FREE No-Hub Coupling

standard version
  • With your purchase of a roof drain and sump pan
  • use with a cast iron to cast iron connection
  • automatically included in your purchase

Don't Forget Upgrades

Premium Grade No-Hub Coupling

Get them on the shopping cart

Need A Large Order?

  • 10, 20, 30 pieces or more? (any size order).
  • Call for a quantity discount quote
  • Questions? Call us
  • 1-888-900-9145
  • (949) 317-0251
  • (949) 297-8689

Check Out The Roof Drain Installation Project

  • This roof drain installation video shows before and after images of a commercial project on a wood framed roof.  
  • This system can be installed in 30 minutes on a wood framed roof in a fraction of the time it would take to build a wood sump box.  
  • Faster installation times means greater efficiency and faster production.
  • Standing rainwater was effectively eliminated and save the property owner thousands in future unnecessary repairs!

How Does Roof Drain Pan LCP To The Competition?

There isn’t another roof drain pan on the market that compares with LCP roof drain sump pan. It is totally designed to sump a 15″ combination roof drain and overflow. And it does it FAST and EASY!

Similar “sump pans” on the market DO NOT sump the roof drain despite their name. 

Model LCP roof drain sump pan is designed to lower or sump a 15" combination roof drain and overflow
true sump pan fits between joists that are 24" on center. No modification required.
Competitors roof drain sump receiver WILL NOT fit between joists that are 24" on center and would require extensive modifications

Questions? We Have Great Tech Support

tech support for roof drains sump pans


(949) 297-8689

(949) 317-0251

  • Send us your specs/plans/drawings. We’re plumbing contractors and may be able to assist. 
  • Visit our installation page, blog or FAQ pages for technical info
  • Call and speak to our trained techs. 
  • Review our videos on our YouTube channel. 
  • M – F, 8 am to 5 pm, PST Calif USA.