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• IBC 705.9.6

  Vertical exposure

  • Openings less than 15 ft above an adjacent roof on the same lot need ¾-hour protection unless that roof is 1-hour for 10 ft.

  International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

• IBC 705.9

  Openings

  • Exterior wall openings follow 705.9.1 to 705.9.6 and Table 705.9.
  • Percent of wall per story (unprotected unsprinklered / unprotected sprinklered or protected): under 3 ft not allowed; 3–5 ft none/15%; 5–10 ft 10/25%; 10–15 ft 15/45%; 15–20 ft 25/75%; 20–25 ft 45%/unlimited; 25–30 ft 70%/unlimited; 30 ft or more unlimited. R-3 is unlimited at 5 ft or more.

  Works withIBC Table 705.9

  International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

• IBC 712.1.15

  Skylights

  • Skylights through rated roofs may be unprotected if structure is maintained, except where 705.9.6 requires a rated roof.

  Works withIBC 705.9.6

  International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

Searches all 4,276 IRC 2024 sections, 5,532 IBC 2024 sections and defined terms (Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 so far) and each city's local rules as they are added. Section numbers and titles from the International Residential Code and International Building Code, 2024 editions, copyrighted by the International Code Council; the IRC's electrical chapters (34 to 43) follow NFPA 70, the National Electrical Code. Requirements are summarized in our words (IRC Chapters 3 to 43, IBC Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33); read the full text at the link on each result. Local values come from each city's published documents.