Whether you’re in search of roof drain specifications, product catalog, or anything in between, we have the resources to answer your questions.

Fueled by Expertise

As an industry professional, you need the right resources to help make your roof drain decisions. Browse our resource library below for expert knowledge on roof drain specs, parts, accessories, and more.

The Drain Historical Archive

The Drain Library

The Drain Library features a collection of articles, catalogs, and patents from well-known drain manufacturers across the U.S.

Roof Drain Spec Sheets

Roof Drain Spec Sheets

If you’re in need of roof drain specifications, take a look at these diagrams and dimensions from several top roof drain manufacturers.

Ask the Drain Wizard

The Drain Wizard

Looking for a specific roof drain? Let the Drain Wizard help you find an option that matches your unique needs and price point.

Frequently Asked Questions About Drains


Check out our FAQ page for answers to the most common roof drain questions we receive.

Drain Video Library


Browse our video library for product demonstrations and overviews, how-to videos, and more.


Roof Drain Information

Get an overview of basic drain systems, drain types and accessories, manufacturers, and more.

Resources_Water Flow Through a Pipe

How Much Water Can Flow Through A Pipe (GPM/GPH)?

Interested in learning about the water flow capacity of different pipe sizes, and which is the best roof drain for a specific pipe size?

Recent Posts

How To Purchase A Replacement Flat Roof Drain
Aug 15, 2022
How To Purchase A Replacement Flat Roof Drain
Flat roof drains are often subjected to heavy weathering and regular wear and tear. As a result, their parts—including domes, rings, sump pans, and clamps—sometimes break, crack or rust over time,...
Pros and Cons of 3 Flat-Roofing Systems
Aug 15, 2022
Pros and Cons of 3 Flat-Roofing Systems
There are 3 main types of flat-roofing systems: built-up roof (BUR), modified bitumen and single-ply. Each system is designed to waterproof the roof and protect it from sun, rain, snow and more. This...
What Is A Retrofit Drain And How To Install One
Aug 15, 2022
What Is A Retrofit Drain And How To Install One
When reroofing or removing an existing drain, a replacement drain needed. This is where retrofit drains are used, as they replace the broken or corroded roof drains easily with almost no...

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