How much clearance (height) does your roof curb need?

The answer, depends on the climate your home or building is in

Roof curbs are only intended for low slope or flat roofs. For a roof pitch 2/12 pitch or lower, you will need:

  • 6″ tall Roof Curb for Zones 1 through 4.
  • 12" tall Roof Curb is good for All Zones.
  • 18″ tall Roof Curb is good for All Zones.

You can use taller roof curbs for additional clearance in warmer climate zones but you can't use shorter roof curbs in colder zones.

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