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Search the building code.

Every 2024 IRC section and the IBC as it loads, by number or topic, plus the local rules for your city. Free to search.

Detached houses, duplexes and townhouses up to 3 stories with their own exits use the IRC; every other building uses the IBC (IBC 101.2).

A random sample from 1,598 sections for San Antonio, TX, the 2024 IRC

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  • R909.1

    General

    • Roof coatings follow the fire and material rules and the maker, using acrylic, asphalt, aluminum-asphalt, silicone or urethane coatings meeting their ASTM standards.

    International Residential Code, 2024 · Chapter 9, Roof AssembliesRead the full text (opens UpCodes in a new tab)

  • R703.7

    Exterior Plaster (Stucco)

    • Stucco follows ASTM C926 and C1063: corrosion-resistant lath nailed or stapled 7 in along framing and 24 in between, three coats over lath, two over masonry or concrete.

    International Residential Code, 2024 · Chapter 7, Wall CoveringRead the full text (opens UpCodes in a new tab)

  • R703.7.3

    Water-Resistive Barriers

    • Stucco needs two layers of Grade D paper (or equal), or one 60-minute layer behind a drainage layer; in humid (A) climates, add a 3/16 in drainage gap or 90% efficient drainage.

    Local review: San Antonio is a moist (2A) climate, so stucco needs the drainage gap or drainage mat.

    International Residential Code, 2024 · Chapter 7, Wall CoveringRead the full text (opens UpCodes in a new tab)

  • R703.11.2

    Installation Over Foam Plastic Sheathing

    • Vinyl over foam alone needs a wind rating from Table R703.11.2 unless backed by structural sheathing, rated by the maker, or the foam itself resists the wind.

    International Residential Code, 2024 · Chapter 7, Wall CoveringRead 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.

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