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• IBC 718.1

  General

  • Fireblocking and draftstops go in combustible concealed spaces; combustibles in Type I/II concealed spaces are limited per 718.5.

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

• IBC 718.2

  Fireblocking

  • Fireblock combustible construction to cut off concealed draft paths between floors and to the attic.

  Works withIRC R302.11

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

• IBC 718.3

  Draftstops in floors

  • Outside Group R, draftstop combustible floor/ceiling spaces to 1,000 sq ft unless sprinklered.

  Works withIBC 708.4.3

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

• IBC 718.4

  Draftstop in attics

  • Outside Group R, draftstop combustible attics to 3,000 sq ft unless sprinklered, keeping ventilation.

  Works withIBC 1202.2.1

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

• IBC 718.5

  Combustible materials in concealed spaces in Type I or II construction

  • No combustibles in Type I/II concealed spaces except per 603, plenum-rated materials, Class A finishes, code-compliant piping and rated pipe insulation.

  Works withIBC 603IBC 720.7

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

• IBC 718.2.1

  Fireblocking materials

  • Fireblocking: 2-in nominal lumber, two 1-in boards, 0.719-in panels, ¾-in particleboard, ½-in gypsum, ¼-in cement board, secured mineral wool, tested cellulose, mass timber or 19/32-in FRT panels.

  Works withIRC R302.11.1

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

• IBC 718.2.2

  Concealed wall spaces

  • Fireblock stud walls at ceiling and floor levels and every 10 ft horizontally.

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

• IBC 718.2.3

  Connections between horizontal and vertical spaces

  • Fireblock where wall cavities meet floor spaces, soffits and drop ceilings.

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

• IBC 718.2.4

  Stairways

  • Fireblock between stair stringers top and bottom.

  Works withIBC 1011.7.3

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

• IBC 718.2.5

  Ceiling and floor openings

  • Fireblock around vents, pipes, ducts and chimneys at floors with tested material where required.

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

• IBC 718.2.6

  Exterior wall coverings

  • Fireblock combustible exterior wall cavities every 20 ft so no space exceeds 100 sq ft; exceptions for single-family cornices, metal-faced coverings and NFPA 285 systems.

  Works withIBC 1405

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

• IBC 718.2.7

  Concealed sleeper spaces

  • Spaces under sleeper floors on rated slabs are filled or fireblocked to 100 sq ft.

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

• IBC 718.3.1

  Draftstop material

  • Draftstops: ½-in gypsum, ⅜-in panels or particleboard, 1-in lumber, cement fiberboard or batts.

  Works withIRC R302.12

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

• IBC 718.4.1

  Draftstops material

  • Per 718.3.1.

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

• IBC 718.2.1.1

  Batts or blankets of mineral wool or mineral fiber

  • Batts may provide 10-ft horizontal fireblocking in double or staggered stud walls.

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

• IBC 718.2.1.2

  Unfaced fiberglass

  • Unfaced fiberglass fireblocking fills the cavity 16 in high.

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

• IBC 718.2.1.3

  Loose-fill insulation material

  • Loose fill, foam sealants and caulk aren't fireblocks unless tested.

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

• IBC 718.2.1.4

  Fireblocking integrity

  • Fireblocks are maintained.

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

• IBC 718.2.1.5

  Double stud walls

  • Batts allowed as fireblocking in double or staggered stud walls.

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

• IBC 718.2.5.1

  Factory-built chimneys and fireplaces

  • Fireblocked per UL 103 and UL 127.

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

• IBC 718.4.1.1

  Openings

  • Openings in draftstops have self-closing, self-latching doors.

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

• IBC 1405.1.3

  Fireblocking

  • Furred coverings: max 1⅝ in gap, fireblocked per 718.

  Works withIBC 718

  International Building Code, 2024 · Chapter 14, Exterior WallsRead the full text (opens UpCodes in a new tab)

• IBC 602.4.1.5

  Concealed spaces

  • Concealed spaces hold only plenum-rated services and follow 718; combustible construction forming them is protected.

  Works withIBC 718IMC

  International Building Code, 2024 · Chapter 6, Types of ConstructionRead the full text (opens UpCodes in a new tab)

• IBC 602.4.1.6

  Shafts

  • Shafts follow 713 and 718, with both faces of mass timber protected.

  Works withIBC 713IBC 718

  International Building Code, 2024 · Chapter 6, Types of ConstructionRead the full text (opens UpCodes in a new tab)

• IBC 602.4.2.5

  Concealed spaces

  • Concealed spaces hold only plenum-rated services and follow 718.

  Works withIBC 718

  International Building Code, 2024 · Chapter 6, Types of ConstructionRead the full text (opens UpCodes in a new tab)

• IBC 602.4.2.6

  Shafts

  • Shafts follow 713 and 718 with both faces protected.

  Works withIBC 713IBC 718

  International Building Code, 2024 · Chapter 6, Types of ConstructionRead 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.