The framing assembly incudes horizontal braces, vertical retrofit studs, and compression blocks. 12 oz/sq ft for preformed metal shingle systems. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. Self-adhering polymer-modified bitumen. The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. In areas where the average daily temperature in January is 25F (-4C) or less, Wood shingles shall be installed in accordance with this chapter and the manufacturer's instructions. The installation of wood shingles shall comply with the provisions of this section. Base flashing against a vertical sidewall shall be continuous or step flashing and shall be not less than 4 inches (102 mm) in height and 4 inches (102 mm) in width and shall direct water away from the vertical sidewall onto the roof or into the gutter. 26 gage [0.019 inch (0.5 mm)] corrosion-resistant sheet metal and shall extend not less than 11 inches (279 mm) from the centerline each way. A liquid-applied protective coating that complies with Table R905.14.3 shall be applied not less than 2 hours nor more than 72 hours following the application of the foam. Underlayment for asphalt shingles, clay and concrete tile, metal roof shingles, mineral-surfaced roll roofing, slate and slate-type shingles, wood shingles, wood shakes and metal roof panels shall conform to the applicable standards listed in this chapter. PDF Guidelines for asphalt shingle roofing - Minnesota Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. 2018 International Residential Code (Irc) | Icc Digital Codes Flashing for asphalt shingles shall comply with this section and the asphalt shingle manufacturer's, Base and cap flashing shall be installed in accordance with manufacturer's instructions. 2018 International Residential Code (Irc) | Icc Digital Codes Base flashing shall be of either corrosion-resistant metal of minimum nominal 0.019-inch (0.5 mm) thickness or mineral-surfaced roll roofing weighing not less than 77 pounds per 100 square feet (4 kg/m. Self-adhering polymer modified bitumen. Galvanized fasteners shall be used for steel roofs. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. CHAPTER 8 ROOF-CEILING CONSTRUCTION. Allowable spans for lumber sheathing shall conform to IRC Table R803.1. Chapter 9 also provides requirements for roof drainage, flashing, above-deck thermal insulation, rooftop-mounted photovoltaic systems and recovering or replacing an existing roof covering. Asphalt shingle packaging shall bear a, Fasteners for asphalt shingles shall be galvanized steel, stainless steel, aluminum or copper roofing nails, minimum 12-gage [0.105 inch (3 mm)] shank with a minimum, Asphalt shingles shall have the minimum number of fasteners required by the manufacturer, but not less than four fasteners per strip shingle or two fasteners per individual shingle. Interlayment shall comply with ASTM D226, Type I. Asphalt shingles shall be tested in accordance with ASTM D7158. roof sheathing, skylights, change of roof pitch, addition or relocation of mechanical units, or installation of heavier materials than were previously installed. Brace gable end walls taller than 48. inches in height to resist wind forces by installing a framing assembly at each gable wall stud. Wood shakes shall be installed in accordance with this chapter and the, The starter course at the eaves shall be doubled and the bottom layer shall be either 15-inch (381 mm), 18-inch (457 mm) or 24-inch (610 mm) wood shakes or wood shingles. Asphalt shingles shall be fastened to solidly sheathed decks. Interlayment shall comply with ASTM D226, Type I. Galvanized fasteners shall be used for steel roofs. Wood shakes shall be installed in accordance with this chapter and the, The starter course at the eaves shall be doubled and the bottom layer shall be either 15-inch (381 mm), 18-inch (457 mm) or 24-inch (610 mm) wood shakes or wood shingles. The installation of liquid-applied roofing shall comply with the provisions of this section. The installation of asphalt shingles shall comply with the provisions of this section. Asphalt shingle packaging shall bear a. 0 Mineral-surfaced roll roofing shall conform to ASTM D 3909 or ASTM D 6380, Class M. Mineral-surfaced roll roofing shall be installed in accordance with this chapter and the manufacturer's instructions. Sprayed polyurethane foam roofs shall have a design. Reroofing shall not be required to meet the minimum design, For roofs that provide positive drainage, recovering or replacing an existing, Complete and separate roofing systems, such as standing-seam metal roof systems, that are designed to transmit the roof loads directly to the building's structural system and do not rely on existing roofs and, Where the existing roof has two or more applications of any type of. The second R-value applies when more than half of the insulation is on the interior of the mass wall. 2 RESIDENTIAL ROOFING GUIDE 2018 IRC. For closed valleys (valley covered with shingles), valley lining of one ply of smooth roll roofing complying with ASTM D 6380 and not less than 36 inches wide (914 mm) or valley lining as described in Item 1 or 2 shall be permitted. It guides the participant through an in-depth review and analysis of the bracing requirements for wood-framed residential structures. Wood shingles shall be laid with a side lap not less than 1, NAIL REQUIREMENTS FOR WOOD SHAKES AND WOOD SHINGLES, Roof flashing shall be not less than No. or less. Asphalt shingles shall be used only on roof. Sprayed polyurethane foam roofs shall have a design. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. Terne coating of 40 lb per double base box, field painted where applicable in accordance with, 0.027 inch minimum thickness: 99.995% electrolytic high-, ASTM D6162; D6163; D6164; D6222; D6223; D6298, As an alternative, self-adhering polymer-modified bitumen, As an alternative, a minimum 4-inch-wide (102 mm) strip of self-adhering polymer-modified bitumen membrane complying with ASTM D1970, installed in accordance with the, The cap nail shank shall be not less than 0.083 inch (2.11 mm) for ring shank cap nails and 0.091 inch (2.31 mm) for smooth shank cap nails. Rooftop-mounted photovoltaic systems shall be installed in accordance with the manufacturer's instructions. Adjacent segments of drip edge shall be overlapped not less than 2 inches (51 mm). ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. For open valleys, valley lining of two plies of mineral-surfaced roll roofing, complying with ASTM D 3909 or ASTM D 6380 Class M, shall be permitted. The installation of thermoset single-ply roofing shall comply with the provisions of this section. A base sheet that complies with the requirements of. The installation of wood shakes shall comply with the provisions of this section. R905.2 Asphalt shingles. (R803.1) Hold-Downs and Hardware Mineral-surfaced roll roofing shall conform to ASTM D3909 or ASTM D6380, Class M. Mineral-surfaced roll roofing shall be installed in accordance with this chapter and the manufacturer's instructions. For closed valleys (valley covered with shingles), valley lining of one ply of smooth roll roofing complying with ASTM D6380 and not less than 36 inches wide (914 mm) or valley lining as described in Item 1 or 2 shall be permitted. Flashing and counterflashing shall be made with sheet metal. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Nails shall be corrosion resistant and not less than 11-gage, Tile shall be applied in accordance with this chapter and the, At the juncture of roof vertical surfaces, flashing and counterflashing shall be provided in accordance with this chapter and the, Roof valley flashing shall be of corrosion-resistant metal of the same material as the. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. 2018 International Residential Code (Irc) | Icc Digital Codes Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. General Re-Roof Requirements . Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. The installation of wood shingles shall comply with the provisions of this section. Base flashing against a vertical sidewall shall be continuous or step flashing and shall be not less than 4 inches (102 mm) in height and 4 inches (102 mm) in width and shall direct water away from the vertical sidewall onto the roof or into the gutter. Mineral-surfaced roll roofing shall not be applied on roof. Valley and flashing metal shall be a minimum uncoated thickness of 0.0179-inch (0.5 mm) zinc coated G90. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. The installation of thermoset single-ply roofing shall comply with the provisions of this section. Install a two-layer #30 felt underlayment system. About this chapter: Chapter 10 contains requirements for the construction, seismic reinforcing and anchorage of masonry chimneys and fireplaces; and establishes standards for the use and installation of factory-built chimneys, fireplaces and masonry heaters. Asphalt shingles shall comply with ASTM D3462. Foam plastic materials and installation shall comply with. Sprayed polyurethane foam roofs shall have a design. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. Mineral-surfaced roll roofing shall conform to ASTM D3909 or ASTM D6380, Class M. Mineral-surfaced roll roofing shall be installed in accordance with this chapter and the manufacturer's instructions. Participants will be able to use this document to identify changes between the 2015 and 2018 IRC allowing them to apply theses code requirements to design, plan submittals and/or inspection. Valley and flashing metal shall be a minimum uncoated thickness of 0.0179-inch (0.5 mm) zinc coated G90. Glenn PDF Esr-3012 - Westlake Royal Roofing Llc IRC Section Table 301.5 Minimum Uniformly Distributed Live Loads: 2018 International Residential Code (IRC) COPYRIGHT PREFACE EFFECTIVE USE OF THE INTERNATIONAL RESIDENTIAL CODE arrow_right CHAPTER 1 SCOPE AND ADMINISTRATION arrow_right CHAPTER 2 DEFINITIONS arrow_right CHAPTER 3 BUILDING PLANNING arrow_right CHAPTER 4 FOUNDATIONS arrow_right CHAPTER 5 FLOORS arrow_right CHAPTER 6 WALL CONSTRUCTION arrow_right Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. 12 oz/sq ft for preformed metal shingle systems. The installation of slate shingles shall comply with the provisions of this section. Asphalt shingles shall comply with ASTM D3462. arrow_right. 2018 International Residential Code (Irc) | Icc Digital Codes Exception: Detached accessory structures not containing conditioned floor area. Section R901 General R901.1 Scope The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies. A new Footnote j Nails shall be corrosion resistant and not less than 11-gage, Tile shall be applied in accordance with this chapter and the, At the juncture of roof vertical surfaces, flashing and counterflashing shall be provided in accordance with this chapter and the, Roof valley flashing shall be of corrosion-resistant metal of the same material as the. Above-deck thermal insulation board shall comply with the standards in Table R906.2. Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. 2018 IRC Simplified Wall Bracing Provisions 4 Objectives Upon completion, participants will be better able to: 1. The installation of liquid-applied roofing shall comply with the provisions of this section. Wood shakes shall comply with the requirements of Table 905.8.5. satisfy the requirements of 2021 IBC Section 1512, 2018 and 2015 IBC Section 1511, 2012, 2009 and 2006 IBC Section 1510, 2018 and 2021, 2018 and 2015 IRC Section R908 or 2012, 2009 or 2006 IRC Section R907. Asphalt shingles shall be fastened to solidly sheathed decks. Nails shall be corrosion resistant and not less than 11-gage, Tile shall be applied in accordance with this chapter and the, At the juncture of roof vertical surfaces, flashing and counterflashing shall be provided in accordance with this chapter and the, Roof valley flashing shall be of corrosion-resistant metal of the same material as the. Base flashing shall be of either corrosion-resistant metal of minimum nominal 0.019-inch (0.5 mm) thickness or mineral-surfaced roll roofing weighing not less than 77 pounds per 100 square feet (4 kg/m. Thermoset single-ply membrane roofs shall have a design. Interpretation #: CEB-2018-10-2005-IRC-R905.2.1 Building or Fire Safety Law Interpreted 675 IAC 14-4.3, the 2005 Indiana Residential Code. Valley flashing shall be not less than 15 inches (381 mm) wide. SECTION R801 GENERAL. Fasteners for asphalt shingles shall be galvanized steel, stainless steel, aluminum or copper roofing nails, minimum 12-gage [0.105 inch (3 mm)] shank with a minimum 3 / 8 -inch- diameter (9.5 mm) head, complying with ASTM F1667, of a length to penetrate through the roofing materials and not less than 3 / 4 inch (19.1 mm) into the roof sheathing. Adjacent segments of drip edge shall be overlapped not less than 2 inches (51 mm). 2018 International Building Code (IBC) BASIC Upgrade to Premium CHAPTER 15 ROOF ASSEMBLIES AND ROOFTOP STRUCTURES First Version: Aug 2017 All Codes I-Codes Legend Information Code Sections My Notes 2018 International Building Code (IBC) PREFACE arrow_right arrow_right arrow_right arrow_right arrow_right arrow_right arrow_right arrow_right For open valleys (valley lining exposed) lined with metal, the valley lining shall be not less than 24 inches (610 mm) wide and of any of the corrosion-resistant metals in Table R905.2.8.2. Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper roofs. Where anchored masonry veneer is provided on the vertical sidewall, the base flashing shall be provided in accordance with this section and counterflashing shall be provided in accordance with Section 703.8.2.2. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Stainless steel fasteners are acceptable for metal roofs. Flashing and counterflashing shall be made with sheet metal. Asphalt shingles shall meet the classification requirements of Table 905.2.4.1 for the appropriate ultimate design wind speed. The installation of slate shingles shall comply with the provisions of this section. For roofs that provide positive drainage, re-covering or replacing an existing, Complete and separate roofing systems, such as standing-seam metal roof systems, that are designed to transmit the roof loads directly to the building's structural system and do not rely on existing roofs and, The application of a new protective coating over an existing spray polyurethane foam roofing system shall be permitted without tear-off of existing, Where the existing roof has two or more applications of any type of. Asphalt shingle packaging shall bear a. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper roofs. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. For SI: 1 ounce per square foot = 0.305 kg/m, The installation of modified bitumen roofing shall comply with the provisions of this section and the manufacturer's, Modified bitumen roofing shall have a design. 260 0 obj <>stream Foam plastic materials and installation shall comply with. Base flashing shall be of either corrosion-resistant metal of minimum nominal 0.019-inch (0.5 mm) thickness or mineral-surfaced roll roofing weighing not less than 77 pounds per 100 square feet (4 kg/m. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. Nails shall be corrosion resistant and not less than 11-gage, Tile shall be applied in accordance with this chapter and the, At the juncture of roof vertical surfaces, flashing and counterflashing shall be provided in accordance with this chapter and the, Roof valley flashing shall be of corrosion-resistant metal of the same material as the. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. Mineral-surfaced roll roofing shall not be applied on roof. Nominally, 2-by- Install drip edges at eaves and rakes. In areas where there has been a history of ice forming along the eaves causing a backup of water, as designated in, The use of above-deck thermal insulation shall be permitted provided that such insulation is covered with an. R902.2 Fire-Retardant-Treated Shingles and Shakes, R902.3 Building-Integrated Photovoltaic Product, R902.4 Rooftop-Mounted Photovoltaic Panels and Modules, R903.4.1 Secondary (Emergency Overflow) Drains or Scuppers, R904.3 Material Specifications and Physical Characteristics, Section R905 Requirements for Roof Coverings. Wood shakes shall comply with the requirements of Table R905.8.5. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. the 2018 International Residential Code (IRC) simplified wall bracing requirements. Mineral-surfaced roll roofing shall conform to ASTM D3909 or ASTM D6380, Class M. Mineral-surfaced roll roofing shall be installed in accordance with this chapter and the manufacturer's instructions. Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. Galvanized fasteners shall be used for steel roofs. Fasteners for asphalt shingles shall be galvanized steel, stainless steel, aluminum or copper roofing nails, minimum 12-gage [0.105 inch (3 mm)] shank with a minimum -inch-diameter (9.5 mm) head, complying with ASTM F1667, of a length to penetrate through the roofing materials and not less than inch (19.1 mm) into the roof sheathing. Where anchored masonry veneer is provided on the vertical sidewall, the base flashing shall be provided in accordance with this section and counterflashing shall be provided in accordance with, Flashing against a vertical front wall, as well as soil, A drip edge shall be provided at eaves and rake edges of shingle roofs. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. 2018 irc roof sheathing requirements. Asphalt shingles shall be fastened to solidly sheathed decks. The installation of asphalt shingles shall comply with the provisions of this section. arrow_right. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Same as Maximum Ultimate Design Wind Speed, Preservative-treated shakes and shingles of, Fire-retardant-treated shakes and shingles of, Preservative-treated tapersawn shakes of Southern pine treated in accordance with AWPA Standard U1 (Commodity Specification A, Special Requirement 4.6), Forest Products Laboratory of the Texas Forest Services, Preservative-treated tapersawn shakes of Southern Yellow Pine, Asphalt-saturated and asphalt-coated organic felt base sheet, Asphalt-saturated organic felt (perforated), Coal-tar primer used in roofing, dampproofing and waterproofing, ASTM B370 minimum 16 oz/sq ft and 12 oz/sq ft high-yield copper for metal-sheet. Slate shingles shall be fastened to solidly sheathed roofs. Liquid-applied roofing shall have a design. Asphalt shingles shall be tested in accordance with ASTM D7158. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. Paint systems in accordance with ASTM A755 shall be applied over steel products with corrosion-resistant coatings complying with ASTM A792, ASTM A875, ASTM A463, or ASTM A653. The 2018 IRC specifies the ratios based on climate zone. For open valleys, valley lining of two plies of mineral-surfaced roll roofing, complying with ASTM D3909 or ASTM D6380 Class M, shall be permitted. Above-deck thermal insulation board shall comply with the standards in Table R906.2. Please see IRC Sec- On roofs with slope equal to or greater than eight units vertical in 12 units horizontal (67-percent slope), the ice barrier shall also be applied not less than 36 inches (914 mm) measured along the roof slope from the eave edge of the building. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. Mineral-surfaced roll roofing shall conform to ASTM D3909 or ASTM D6380, Class M. Mineral-surfaced roll roofing shall be installed in accordance with this chapter and the manufacturer's instructions. PDF 2018 IRC Wood Wall Bracing (ABM) - ICC Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. Asphalt shingles shall comply with ASTM D3462. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. Valley and flashing metal shall be a minimum uncoated thickness of 0.0179-inch (0.5 mm) zinc coated G90. Flashing and counterflashing shall be made with sheet metal. Foam plastic materials and installation shall comply with. 12 oz/sq ft for preformed metal shingle systems. Htt4 & -`P .+Yn0a|bZN4U+yX*iNFk $ Valley and flashing metal shall be a minimum uncoated thickness of 0.0179-inch (0.5 mm) zinc coated G90. Paint systems in accordance with ASTM A755 shall be applied over steel products with corrosion-resistant coatings complying with ASTM A792, ASTM A875, ASTM A463, or ASTM A653. Base flashing against a vertical sidewall shall be continuous or step flashing and shall be not less than 4 inches (102 mm) in height and 4 inches (102 mm) in width and shall direct water away from the vertical sidewall onto the roof or into the gutter. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s. Roof valley flashing shall be not less than No. Section R803 Roof Sheathing R803.2 Wood Structural Panel Sheathing (Roof Online Note: This subsection covers plywood and OSB sheathing. Stainless steel fasteners are acceptable for metal roofs. 2018, 2021 IECC: Mass walls shall be in accordance with Section R402.2.5 (N1102.2.5 in 2018 IRC). Asphalt shingles shall comply with ASTM D3462. (R803.1) Spaced lumber sheathing for wood shingle and shake roofing shall conform to the requirements of sections R905.7 and R905.8. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Base and cap flashing shall be installed in accordance with manufacturer's instructions. Wood shakes shall be installed in accordance with this chapter and the, The starter course at the eaves shall be doubled and the bottom layer shall be either 15-inch (381 mm), 18-inch (457 mm) or 24-inch (610 mm) wood shakes or wood shingles. Mineral-surfaced roll roofing shall not be applied on roof. PDF 2021 Significant Code Changes for the IRC - National Association of Chapter 9: Roof Assemblies, Residential Code 2018 of Maryland | UpCodes Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Chapter 9: Roof Assemblies, 2018 South Carolina Residential Code | UpCodes Roof valley flashing shall be not less than No. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. The ratio changes based on climate severity. (R803.1) Spaced lumber sheathing is not allowed in Seismic Design Category D 2. The second R-value applies when more than half of the insulation is on the interior of the mass wall. For SI: 1 ounce per square foot = 0.305 kg/m. Cap nail shank shall have a length sufficient to penetrate through the roof sheathing or not less than, The standard calculations contained in ASTM D7158 assume Exposure Category B or C and a. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. Above-deck thermal insulation board shall comply with the standards in Table 906.2. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. 26 gage [0.019 inches (0.5 mm)] corrosion-resistant sheet metal and shall extend 10 inches (254 mm) from the centerline each way for roofs having, Each bundle of shingles shall be identified by a.
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