2022.08.24 WednesdayMinimum headlap for slate shingles shall be in accordance with Table R905.6.5. 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. The installation of asphalt shingles shall comply with the provisions of this section. Materials and methods of application used for recovering or replacing an existing, The structural roof components shall be capable of supporting the, Flashings shall be reconstructed in accordance with, Chapter 9 addresses the design and construction of, R902.2 Fire-Retardant-Treated Shingles and Shakes, R902.3 Building-Integrated Photovoltaic Product, R902.4 Rooftop-Mounted Photovoltaic Panel Systems, R903.4.1 Secondary (Emergency Overflow) Drains or Scuppers, R904.3 Material Specifications and Physical Characteristics, Section R905 Requirements for Roof Coverings, In areas where the average daily temperature in January is 25F (-4C) Asphalt shingles shall be fastened to solidly sheathed decks. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. 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. Where the roof, Where required, ice barriers shall comply with. Above-deck thermal insulation board shall comply with the standards in Table R906.2. Flashing and counterflashing shall be made with sheet metal. Thermoplastic single-ply membrane roofs shall have a design. Where the existing roof covering is slate, clay, cement or asbestos-cement tile. Each bundle of shakes shall be identified by a. Valley flashing shall be not less than 15 inches (381 mm) wide. 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. Wood shakes shall comply with the requirements of Table R905.8.5. Interlayment shall comply with ASTM D226, Type I. The installation of asphalt shingles shall comply with the provisions of this section. Part III Building Planning and Construction, R907 Rooftop-Mounted Photovoltaic Panel Systems, Chapter 13 General Mechanical System Requirements, Chapter 14 Heating and Cooling Equipment and Appliances, Chapter 19 Special Appliances, Equipment and Systems, Chapter 22 Special Piping and Storage Systems, Chapter 37 Branch Circuit and Feeder Requirements, Chapter 39 Power and Lighting Distribution, Chapter 43 Class 2 Remote-Control, Signaling and Power-Limited Circuits, Appendix A Sizing and Capacities of Gas Piping, Appendix B Sizing of Venting Systems Serving Appliances Equipped With Draft Hoods, Category I Appliances and Appliances Listed for Use With Type B Vents, Appendix C Exit Terminals of Mechanical Draft and Direct-Vent Venting Systems, Appendix D Recommended Procedure for Safety Inspection of an Existing Appliance Installation, Appendix E Manufactured Housing Used as Dwellings, Appendix G Piping Standards for Various Applications, Appendix J Existing Buildings and Structures, Appendix T [RE] Solar-Ready ProvisionsDetached One- And Two-Family Dwellings and Townhouses, The provisions of this chapter shall govern the design, materials, construction and quality of, Roofs shall be covered with materials as set forth in Sections, Flashings shall be installed in a manner that prevents moisture from entering the wall and roof through joints in copings, through moisture permeable materials and at intersections with parapet, Flashings shall be installed at wall and roof intersections, wherever there is a change in roof, A cricket or saddle shall be installed on the ridge side of any, The requirements set forth in this section shall apply to the application of, ASTM D6380 Class M mineral-surfaced roll roofing. 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. 260 0 obj <>stream 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. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Slate shingles shall comply with ASTM C406. 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. The installation of thermoset single-ply roofing shall comply with the provisions of this section. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. Roof valley flashing shall be not less than No. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. Where the existing roof has two or more applications of any type of roof . Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. 2018 IRC. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. Galvanized fasteners shall be used for steel roofs. Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. Foam plastic materials and installation shall comply with. Foam plastic materials and installation shall comply with. 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. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. 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. Asphalt shingles shall be tested in accordance with ASTM D7158. The second R-value applies when more than half of the insulation is on the interior of the mass wall. Modified bitumen roofing shall comply with the standards in Table R905.11.2. Install a nominal 4-inch-wide roof deck flashing tape over all roof sheathing panel seams and cover with #30 felt or equivalent synthetic underlayment. Galvanized fasteners shall be used for steel roofs. Asphalt shingles shall be fastened to solidly sheathed decks. 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. Materials and methods of application used for recovering or replacing an existing, The structural roof components shall be capable of supporting the, Flashings shall be reconstructed in accordance with, Chapter 9 addresses the design and construction of, The 24 inch measurement shall be along the, Building-integrated photovoltaic products. Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. 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. Install drip edges at eaves and rakes. Flashing and counterflashing shall be made with sheet metal. Part III Building Planning and Construction, R907 Rooftop-Mounted Photovoltaic Panel Systems, Chapter 13 General Mechanical System Requirements, Chapter 14 Heating and Cooling Equipment and Appliances, Chapter 19 Special Appliances, Equipment and Systems, Chapter 22 Special Piping and Storage Systems, Chapter 37 Branch Circuit and Feeder Requirements, Chapter 39 Power and Lighting Distribution, Chapter 43 Class 2 Remote-Control, Signaling and Power-Limited Circuits, Appendix A Sizing and Capacities of Gas Piping, Appendix B Sizing of Venting Systems Serving Appliances Equipped With Draft Hoods, Category I Appliances and Appliances Listed for Use With Type B Vents, Appendix C Exit Terminals of Mechanical Draft and Direct-Vent Venting Systems, Appendix D Recommended Procedure for Safety Inspection of an Existing Appliance Installation, Appendix E Manufactured Housing Used as Dwellings, Appendix G Piping Standards for Various Applications, Appendix J Existing Buildings and Structures, Appendix T [RE] Solar-Ready ProvisionsDetached One- And Two-Family Dwellings and Townhouses, The provisions of this chapter shall govern the design, materials, construction and quality of, Roofs shall be covered with materials as set forth in Sections, Flashings shall be installed in a manner that prevents moisture from entering the wall and roof through joints in copings, through moisture permeable materials and at intersections with parapet, Flashings shall be installed at wall and roof intersections, wherever there is a change in roof, A cricket or saddle shall be installed on the ridge side of any, The requirements set forth in this section shall apply to the application of, ASTM D6380 Class M mineral-surfaced roll roofing. The 2018 IRC specifies the ratios based on climate zone. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. Asphalt shingles shall be tested in accordance with ASTM D7158. 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. Modified bitumen roofing shall comply with the standards in Table R905.11.2. Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper roofs. Above-deck thermal insulation board shall comply with the standards in Table R906.2. 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. Wood shakes shall comply with the requirements of Table R905.8.5. 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 wood shakes shall comply with the provisions of this section. 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. The installation of wood shakes shall comply with the provisions of this section. 201 0 obj <> endobj SECTION R804 COLD-FORMED STEEL ROOF FRAMING. 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. 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 Liquid-applied roofing shall be installed in accordance with this chapter and the, Where required, an ice barrier shall comply with, 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. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. Stainless steel fasteners are acceptable for metal roofs. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. IRC Section Table 301.5 Minimum Uniformly Distributed Live Loads: 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. Foam plastic materials and installation shall comply with. 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. In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in. Asphalt shingles shall be fastened to solidly sheathed decks. The installation of liquid-applied roofing shall comply with the provisions of this section. Htt4 & -`P .+Yn0a|bZN4U+yX*iNFk $ Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Exception: Detached accessory structures not containing conditioned floor area. 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. Mineral-surfaced roll roofing shall not be applied on roof. hb```g``:AX,;nkga3l~/ * The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. References are to the 2018 International Residential Code (sections are designated as R). Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. R905.2.2 Slope. 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. DEWALT Building Code Reference: Based on the 2018 International Residential Code | Books & Magazines, Textbooks, Education & Reference, Dictionaries & Reference | eBay! 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 Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. 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. 2. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. R905.2.1 Sheathing requirements. The 4-inch-wide (102 mm) strips of self-adhering polymer-modified-bitumen membrane 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. Asphalt shingles shall comply with ASTM D3462. Same as Maximum Ultimate Design Wind Speed, 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. 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's, Where required, ice barriers shall comply with, 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. General Re-Roof Requirements . A base sheet that complies with the requirements of. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Please see IRC Sec- 3. In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in. Interlayment shall comply with ASTM D226, Type I. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Slate shingles shall comply with ASTM C406. Asphalt shingles shall be fastened to solidly sheathed decks. The installation of slate shingles shall comply with the provisions of this section. Slate shingles shall be fastened to solidly sheathed roofs. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. The installation of liquid-applied roofing shall comply with the provisions of this section. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. Sprayed polyurethane foam roofs shall have a design. The installation of liquid-applied roofing shall comply with the provisions of this section. The installation of mineral-surfaced roll roofing shall comply with this section. Asphalt shingles shall comply with ASTM D3462. Liquid-applied roofing shall have a design. Flashing and counterflashing shall be made with sheet metal. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. The installation of thermoset single-ply roofing shall comply with the provisions of this section. Slate shingles shall be fastened to solidly sheathed roofs. 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. Base and cap flashing shall be installed in accordance with manufacturer's instructions. The International Residential Code (IRC) and the Residential Edition of the Florida Building Code (FBC) both refer to Table R503.2.1.1(1) of the APA Engineered Wood Construction Guide for specs. Foam plastic materials and installation shall comply with Section 316. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. Roof penetrations shall be flashed and sealed in accordance with this chapter. %%EOF 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. 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. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. 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. 12 oz/sq ft for preformed metal shingle systems. 12 oz/sq ft for preformed metal shingle systems. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. A liquid-applied protective coating that complies with Table 905.14.3 shall be applied not less than 2 hours nor more than 72 hours following the application of the foam. It guides the participant through an in-depth review and analysis of the bracing requirements for wood-framed residential structures. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. or less, R905.2.4.1 Wind Resistance of Asphalt Shingles, R905.14 Sprayed Polyurethane Foam Roofing, R905.17 Building-Integrated Photovoltaic (BIPV) Roof Panels Applied Directly to the Roof Deck, Section R907 Rooftop-Mounted Photovoltaic Panel Systems, R907.1 Rooftop-Mounted Photovoltaic Panel Systems, Building-integrated photovoltaic products. 12 oz/sq ft for preformed metal shingle systems. Slate shingles shall be secured to the roof with two fasteners per slate. Brace gable end walls taller than 48. inches in height to resist wind forces by installing a framing assembly at each gable wall stud.
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