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JR Smith roof drain, Flat Roof Drain Installation
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Get Product Info... here are the roof drains that fit model SCP roof drain sump pan and the common accessories

SCP Roof Drain Sump Pan 

roof drain pan, roof drain pans, roof drain sump pans, Custom Roof Drain Pans, custom roof drain sump pans, sump pans, sump receiver, flat roof drain sump pan, flat roof drain sump pan, SCP roof drain sump pan

Frank Pattern Roof Drain

Frank Pattern roof drain and overflow

Jay R Smith 148 Roof Drain

JR Smith roof drain 148, primary roof drain and overflow

Zurn RD2130 Roof Drain

Zurn RD 2130 combination primary and overflow roof drains

Frank Pattern Side Outlet Roof Drain

Frank Pattern Side Outlet Flat Roof Drain

JR Smith 1340 side outlet roof drain

Jay R Smith 1340 Roof Drain

Space Requirement - bottom drain

11-12-23

Space Requirement - side drain

Vertical space reqs for a side outlet roof drain

Roof Drain Accessories

Frank Pattern Membrane Clamp

Frank Pattern Membrane ClampRing

Frank Pattern Cast Iron Dome

Frank Pattern dome strainer

Frank Pattern Water Dam

Frank Pattern 8-1/2" x 2" water dam

Specialty No Hub Couplings

specialty no hub coupling

How To Install The SCP Roof Drain Sump Pan and Drains

SCP roof drain sump pan, an industry first design by Custom Roof Drain Pans Co., is one of our most versatile products in our sump pan series. It is specifically engineered to "sump" or lower bottom and side outlet combination roof drain in a variety of configurations!

Here are the unique features that set it apart from any other drain pan on the market...

  1. It sumps the roof drain 2″ below the roof deck and prevents standing rainwater
  2. Fast and EASY installation – 10 to 15 minutes. NO MORE WOOD BOXES!
  3. Easily adaptable to field conditions with various installation configurations
  4. Uses different roof drain brands – choose your favorite manufacturer 
  5. Perfectly adapted for retrofit applications or new construction

See Which Roof Drain Configuration Works Best On Your Project...

1) Bottom outlet configuration - 16" and 24" joists

  • In this configuration, the roof drain piping is vertical and will clear the joists allowing pipe runs in any direction through the attic space.
  • This is the most common type of installation. 
  • Unlimited pipe run options

2) Side outlet roof drain configurations for joists that are 16" on center minimum

This section applies when you have limited space between the roof and ceiling and need to use a side outlet roof drain. The side outlet roof drain incorporates the 90 degree bend into the drain body, thereby requiring less vertical installation space.

please click on the images for more info

Pipe runs parallel to the joists -

The products used for this configuration are:

  1. model SCP roof drain sump pan
  2. Two Frank Pattern side outlet roof drains available in 2″ – 4″ no-hub connections. Other similar roof drains can be used

This photo shows the double pan rather than two single pans but it demonstrates what the final installation looks like 

3) Side outlet roof drain configurations for joists that are 24" on center minimum

This configuration can also be used when installation space is minimum. With the joists at 24" minimum spacing, you have ample space to configure your pipe runs at 90 degree intervals. This versatility becomes useful when you need to maneuver around objects such as electrical fixtures, conduit, mechanical ducting etc. in the joist bay.

Pipe runs parallel to the joists - 90 degree adjustment

The products used for this configuration are:

  1. model SCP roof drain sump pan
  2. Two Frank Pattern side outlet roof drains available in 2″ – 4″ no-hub connections. Other similar roof drains can be used

Here is an eample of parallel pipe runs

Model SCP roof drain sump pan and Frank Pattern 850-4 roof drain and overflow

Need assistance with design, planning or debug of your project?

Designing a roof drainage system
    • our online consulting service can assist   
    • Upload your specs / plans / drawings / photos. We’ll review the documents and provide you with an estimate and set up an appt. for a phone call