IRC 2021 · Model
Chapter 8: Roof Ceiling Construction
40 sections in this chapter of the IRC 2021 model text — not Model's amended edition.
802.1 General Wood and wood-based products used for load-supporting purposes shall conform to the applicable provisions of this section.
Plain-English guides for this chapter
- Attic Ventilation — IRC R806.2, IRC R806.2
- Attic Access — IRC R807.1, IRC R807.1
- Rafter Spans — IRC R802.4.1, IRC Tables R802.4.1(1)–(8)
- Roof Snow Load — IRC Table R301.2, IRC R301.2.3
- 802.1General
- 802.1.1Sawn lumber
- 802.4Rafters
- R801.1Application
- R801.2Requirements
- R801.3Roof drainage
- R802.1General
- R802.1.1Sawn lumber
- R802.1.2Structural glued-laminated timbers
- R802.1.3Structural log members
- R802.1.4Structural composite lumber
- R802.10.1Truss design drawings
- R802.10.2Design
- R802.10.3Bracing
- R802.10.4Alterations to trusses
- R802.11.1Truss uplift resistance
- R802.2Design and construction
- R802.3Ridge
- R802.4Rafters
- R802.4.1Rafter size
- R802.4.2Framing details
- R802.4.3Hips and valleys
- R802.4.4Rafter supports
- R802.5Ceiling joists
- R802.5.1Ceiling joist size
- R802.5.2Ceiling joist and rafter connections
- R802.6Bearing
- R802.6.1Finished ceiling material
- R802.7Cutting, drilling and notching
- R802.7.1Sawn lumber
- R802.8Lateral support
- R802.8.1Bridging
- R802.9Framing of openings
- R803.1Lumber sheathing
- R803.2.1Identification and grade
- R804.1General
- R804.2Structural framing
- R805.1Ceiling installation
- R806.1Ventilation required
- R806.2Minimum vent area
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