Superior Grade Roof Drain Sump Pans...

The only brand of superior grade roof drain sump pans engineered to lower or "sump" cast iron roof drains FAST and EASY!

We have four Roof drain sump pan models to choose from

Model SSP Roof drain Sump Pan - standard


  • FAST, FAST, FAST are the only words to describe model SSP roof drain sump pan. Faster installation means more production. 


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Model LSP Roof Drain Sump Pan - standard

Model LSP roof drain sump pan design sumps the Zurn Z100 bottom outlet roof drain and the Z100-90 si

How EASY can it get to sump a large roof drain? If you are building wood sump boxes, you are wasting valuable production time.


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Model SCP Roof Drain Sump Pan - standard


Model SCP roof drain sump pan is the "TRANSFORMER". It can do what no other what no other small double sump pan on the market does. Whether you need bottom or side outlet combination roof drain, it has you covered.


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Model LCP Roof Drain Sump Pan - standard


There is no other large double roof drain sump pan on the market that has quite the engineering and quality built into such a large pan as LCP roof drain sump pan has. Find out more.



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See What Our Customers Have To Say

FAST and EASY Installation

I just received my first roof drain sump pans and flat roof drains from Roof Drain Pans co and installed them the same day. I accomplished in 45 minutes what would have taken me 3 or 4 hours! Major time saver and paid for the products many times over. Fast and easy to install just like it says. I'll be back for some more.... Eddie, Plumbing contractor.  (New Jersey) 


This video is fantastic & well done. I just left a roof we installed 10 years ago & if we would of installed these flush flat roof drains and roof drain sump pans then we wouldn't be repairing the drywall ceilings below for the last 4 years. Thank you for your video. 

Cheers Jeff (YouTube post) (uk) 


These roof drain sump pans do exactly what is said will do. Find your low spot, drop it in, connect piping, seal it up and the standing rain water disappears. Fast, easy and cost effective.  

J.R. Roofing contractor, CA, USA


Why didn't somebody come up with this idea before now? We will never build a wood sump box again!!  It takes 10 minutes to drop in the small single flat roof drain and the roof drain sump pans and we're back to roofing. BIG time saver, pays for itself... L.D. Roofing contractor, Florida, USA


As a property owner, I can't tell you how many thousands of dollars I have spent trying to resolve the large pools of standing rain water on my flat roof with no lasting permanent results. They build up the low area and a pond develops somewhere else. Who does that? The roof drain sump pans we purchased from Jim at Roof Drain Pans lowered the roof drains and no more standing rain water. They work great!!  M.V. property owner. Texas,USA

Here are some roof drain sump pan benefits

Increase Production and Reduce Labor Costs

Contractors can install more roof drains per hour with any of the roof drain sump pans and flat roof drains. This means more production and less labor costs. 

Minimize Roof Repairs Related To Standing Rain Water Issues

Standing rain water can destroy a roof. Get rid of it fast with our superior grade roof drain sump pans and flat roof drain kits.. 

Eliminate Roof Collapse

Roof drain sump pans get the large pools of rain water off the roof which a cause of roof collapse. 

Improve Roof Drain Performance

A sumped roof drain becomes the lowest point on the roof. As such, all of the rain water rushes toward it rather than stay on the roof. 

Eliminate Costly Roof Resloping

In some cases, well placed sumped roof drains in low spots on the roof is all that's needed. This can save tens or hundreds of thousands of dollars. 

Eliminate Standing Rainwater

Roof drain sump pans lower your roof drains and makes standing rain water disappear. 

Terms and Conditions

Buyer agrees with all terms and conditions on and related websites. Sales tax is charged in CA only. Default shipping is UPS or Fed Ex ground unless otherwise requested in writing by customer at the time of checkout. Restocking and handling fee on returns is 25% of the sale, customer pays for all return shipping costs.  All returned materials must be in sellable condition. SUMP PAN PATENT NOTICE: These roof drain sump pans are protected under a US Patent. Making, using, offering for sale, or selling the invention throughout the United States of America, or importing the invention into the UNITED  STATES OF AMERICA , or products made by the process herein without a written licensing agreement is a violation of patent laws in the US. The purchase of any products from Roof Drain Pans Co. or any affiliations of same indicate agreement and acknowledgement of this notification.