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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).

76 sections matching “IBC 1404” for San Antonio, TX, the 2024 IRC, showing the first 60

  • IBC 1404.2

    Weather protection

    • Coverings at the minimum thicknesses in Table 1404.2 are accepted weather coverings.
    • Minimum thickness (in): adhered masonry veneer 0.25; aluminum siding 0.019; anchored stone 2.0, cast stone 2.5; fiber-cement lap/panel 0.25; fiberboard 0.5; hardboard 0.25; exterior plywood with sheathing 0.313; porcelain tile 0.125; steel 0.0149; structural glass 0.344; three-coat stucco 0.875 over metal lath, 0.625 over masonry/concrete; two-coat stucco 0.5 masonry, 0.375 concrete; vinyl 0.035; wood shingles 0.375; wood siding without sheathing 0.5.

    Works withIBC 2304.6

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

  • IBC 1404.3

    Vapor retarders

    • Frame walls get an interior vapor retarder per Tables 1404.3(1)–(4) or a hygrothermal design; climate zone from IECC Chapter 3. Not needed in zones 1–3, basements, below grade, or in zones 4–8 where Table 1404.3(5) exterior insulation is used.
    • Class I ≤0.1 perm (polyethylene, foil); Class II >0.1–1.0 perm (kraft-faced batts, vapor retarder paint); Class III >1.0–10 perm (latex or enamel paint).
    • Zones 1–2: Class III only. Zone 3: II or III. Zone 4 (not marine): II, or III per Table 1404.3(3). Marine 4 and 5–8: I, II, or III per Table 1404.3(3). A responsive retarder is allowed anywhere.
    • Class III allowed with vented cladding over WSP/fiberboard/gypsum (zone 4–5; fiberboard/gypsum only in 6), or continuous insulation over 2×4 / 2×6: zone 4 R-2.5/R-3.75, 5 R-5/R-7.5, 6 R-7.5/R-11.25, 7 R-10/R-15, 8 R-12.5/R-20.
    • Zone 3 R-2; zones 4–6 R-3 (2×4) / R-5 (2×6); 7 R-5 / R-7.5; 8 R-7.5 / R-10.
    • Exterior continuous insulation of at least R-4.5 (zone 4), 6.5 (5), 8.5 (6), 11.5 (7), 14 (8), with ≤R-5 inboard and a ≤1 perm layer on the outside of the wall.

    Works withIECC

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

  • IBC 1404.4

    Flashing

    • Flash to keep water out or lead it to the WRB: at door and window perimeters, penetrations, roof, chimney, porch, deck and balcony intersections, built-in gutters, copings, sills and trim. Self-adhered flashing per AAMA 711, fluid-applied per AAMA 714.

    Works withIBC 1403.2IBC 1404.4.1

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

  • IBC 1404.6

    Wood veneers

    • On Types I–IV: at least 1 in nominal (or 0.438 in hardboard, 0.375 in WSP), max 40 ft above grade (60 ft if FRT), on rated noncombustible backing; open veneers project no more than 24 in.

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

  • IBC 1404.8

    Stone veneer

    • Stone up to 10 in thick is tied to backing: wire ties one per 2 sq ft, 1 in grout behind; on wood or steel studs (16 in o.c. max) use 2×2 in wire mesh over two WRB layers.

    Works withIBC 1403.2

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

  • IBC 1404.9

    Slab-type veneer

    • Stone slabs up to 2 in thick, max 20 sq ft each, with at least four dowel ties no more than 24 in apart.

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

  • IBC 1404.3.1

    Spray foam plastic insulation for moisture control with Class II and III vapor retarders

    • Interior spray foam ≤1.5 perm on sheathing counts toward the continuous-insulation R-value in Tables 1404.3(3) and (4).

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

  • IBC 1404.3.2

    Vapor retarder installation

    • Install per the maker or approved design; one doubling as an air barrier follows the IECC.

    Works withIECC

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

  • IBC 1404.4.1

    Fenestration flashing

    • Per the window maker, or else the WRB maker, the flashing maker, a design professional or an approved method.

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

  • IBC 1404.4.3

    Masonry

    • Anchored veneer flashing and weeps no more than 10 in above finished grade, and in the first course above other supports.

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

  • IBC 1404.5.1

    Cladding attachment over foam sheathing to masonry or concrete wall construction

    • Furring and fasteners through foam into masonry or concrete are designed for Chapter 16 loads and cladding weight, with fasteners approved for the substrate.

    Works withIBC Chapter 16

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

  • IBC 1404.5.2

    Cladding attachment over foam sheathing to cold-formed steel framing

    • Attachments through foam to steel studs meet Tables 1404.5.2.1/1404.5.2.2 or an approved design.

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

  • IBC 1404.5.3

    Cladding attachment over foam sheathing to wood framing

    • Attachments through foam to wood framing meet Tables 1404.5.3.1/1404.5.3.2 or an approved design.

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

  • IBC 1404.11.2

    Exterior adhered masonry veneers—porcelain tile

    • Units over 3.5 psf: max 48 in face, 9 sq ft, 6 psf. Units 3.5 psf or less: max 72 in face, 17.5 sq ft.

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

  • IBC 1404.15.2

    Installation over foam plastic insulating sheathing

    • Over foam alone, siding needs a wind rating per Table 1404.15.2 (e.g. 115 mph Exposure B with interior gypsum: −35.5 psf). Exempt over structural backing, with a maker's rating, or where the foam is designed for the load.

    Works withIBC 2603.10

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

  • IBC 1404.18.2

    Fastener requirements

    • Corrosion-resistant nails, 0.120 in shank, 0.313 in head, 1¼ in long or ¾ in into the substrate.

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

  • IBC 1404.5.2.1

    Direct attachment

    • Direct cladding screws through foam into steel per Table 1404.5.2.1. Example: #10 screw into 43 mil steel at 16 in o.c., 8 in vertical spacing, 11 psf cladding allows 4.00 in foam.

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

  • IBC 1404.5.3.1

    Direct attachment

    • Direct nails through foam into wood (1¼ in penetration) per Table 1404.5.3.1. Example: 0.131 in nail at 16 in o.c., 6 in vertical spacing, 11 psf allows 2.15 in foam.

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

  • IBC 1404.11.1.3

    Clearances

    • On stud walls, at least 4 in above earth, 2 in above paving, ½ in above walking surfaces on the same foundation.

    International Building Code, 2024 · Chapter 14, Exterior WallsRead 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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