Model SSP superior grade roof drain sump pan is designed to lower or sump the Frank Pattern™ Roof Drain

Our Approach

Our mission at Custom Roof Drain Pans to provide our customers with high-quality products and service.  We take great pride in our company, our commitment to customer service and in the products we sell.

Our online store is designed to provide you with a safe and secure environment to browse our product catalog & order our products

Our roof drain sump pans were developed by Jim Seitzinger, a licensed  plumbing contractor in Southern California. His custom sheet metal sump pan designs are the result of continual requests from roofing contractors, building owners, and others to solve the ponding rainwater issues on their flat roofs.

Flat Roof Drainage: A Common Problem

Flat roofs, where heavy standing rainwater accumulates, presents a very serious threat. In severe cases the flat roof can collapse causing injury and extensive property damage. In less serious cases the roof covering can be destroyed causing premature and VERY expensive replacement. In many cases, the situation could have been avoided. 

The Uniform Plumbing Code addresses this very important subject.

Existing Technology Was Inadequate Or  Non-Existent...

A common cause of standing pools of rain water on flat roofs is roof drains that sit too high on the roof deck and do not allow rainwater to flow into the roof drain.  

Mr. Seitzinger extensively investigated the marketplace. It was found that there was no standard technology in existence to sump a roof drain.

The industry standard that had been used by the roofing industry has been to build wooden drain boxes on the jobsite.

A sump “box” is cumbersome,  expensive & time-consuming to build and often fail.  



The answer to these problems are available here on our website.  Jim’s products represent  in the construction industry, and it’s now available for your use.

The design and development of these products is the result of hard work and persistence. Roof Drain Pans Co typifies “American Ingenuity”:  finding a new and better way to accomplish something.  American inventiveness and creativity are still hard at work.  As such the US Patent office has granted Roof drain Pans Co a US patent.  These products are  protected under U.S. patent no. US 7,946,087 B1.

Mr. Seitzinger is very involved in the plumbing industry and is available to answer any questions on these products or the installation process.  We encourage you to share your success stories that you may have as a result of using our  products.  Mr. Seitzinger can be reached at the numbers listed.

Have a question? Call us toll free. We’re always happy to talk to our visitors….888 900-9145


James B. Seitzinger

Owner / Patent holder

Nadia Seitzinger

Office Manager