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Interpretation #8567

Original Request

  • Requested By: Robert Hatton
  • Requester E-Mail: rhatton@largo.com
  • Code Version: 2021
  • Code: EXTBLDG
  • Code Description:
  • Chapter:
  • Section: 706.1
  • Topic: Positive roof drainage

  • Question: Is it the intent of the exception in section 706.1 to require a slope on flat roof during a re-roof to create positive drainage?

Answer:

2020 Existing Building Code, Definitions of Positive Roof Drainage is to require a slope that ensures that the roof will be dry within 48 hours not for no slope even if the roof dries within 48 hours.

Commentary:

None.