Section R901 General R901.1 Scope The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies. The installation of wood shingles shall comply with the provisions of this section. Roof valley flashing shall be not less than No. Allowable spans for lumber used as roof sheathing shall conform to Table R803.1. 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 fastened to solidly sheathed roofs. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. Roof valley flashing shall be not less than No. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. Sprayed polyurethane foam roofs shall have a design. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. It guides the participant through an in-depth review and analysis of the bracing requirements for wood-framed residential structures. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Sheathing Requirements R905.2.1 Asphalt shingles shall be fastened to solidly sheathed decks. 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 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. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. 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. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Slate shingles shall comply with ASTM C406. Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. Asphalt shingles shall be fastened to solidly sheathed decks. PDF Roof Deck Requirements for Installation of Asphalt Shingles Technical 2018 International Residential Code (Irc) | Icc Digital Codes 2015 IRC portion of the 2018 CT State Building Code, Part III Building Planning and Construction, R907 Rooftop-Mounted Photovoltaic Systems, R909 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 Recommended Procedure for Worst-Case Testing of Atmospheric Venting Systems Under N1102.4 or N1105 Conditions 5ACH, Appendix U Solar-Ready ProvisionsDetached One- And Two-Family Dwellings, Multiple Single-Family Dwellings (Townhouses), Appendix V Wind Speeds, Seismic Design Categories and Ground Snow Loads, 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, For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in. 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. Modified bitumen roofing shall comply with the standards in Table R905.11.2. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. 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. Wood shakes shall comply with the requirements of Table R905.8.5. Section R803 Roof Sheathing R803.2 Wood Structural Panel Sheathing (Roof Online Note: This subsection covers plywood and OSB sheathing. 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. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Self-adhering polymer modified bitumen. The installation of mineral-surfaced roll roofing shall comply with this section. 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. Above-deck thermal insulation board shall comply with the standards in Table R906.2. Valley flashing shall be not less than 15 inches (381 mm) wide. 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. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. The installation of asphalt shingles shall comply with the provisions of this section. 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. Each bundle of shakes shall be identified by a. 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. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. Where the existing roof has two or more applications of any type of roof . Glenn Slate shingles shall comply with ASTM C406. 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. Roof Sheathing Ring Shank nails have been added to Table R602.3(1) Fastening Schedule with the designation RSRS-01 (2-3/8" x 0.113") as an option for roof sheathing attachment. Spaced lumber decking CoL Refer to the manufacturer's technical bulletin regarding requirements for existing deck boards. IRC Section 301.3 Story Height: The ability is restored to construct a story of a dwelling using 12-foot high bearing walls if the wall studs are engineered for gravity loads, wall bracing amounts are increased, and a roof or celling diaphragm provides support to the studs. The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. The second R-value applies when more than half of the insulation is on the interior of the mass wall. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. Foam plastic materials and installation shall comply with. hb```g``:AX,;nkga3l~/ * Galvanized fasteners shall be used for steel roofs. R803.1 Lumber sheathing. 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 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. Thermoset single-ply membrane roofs shall have a design. 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. Roof penetrations shall be flashed and sealed in accordance with this chapter. The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. The ratio changes based on climate severity. Asphalt shingles shall be fastened to solidly sheathed decks. 2018 International Residential Code (Irc) | Icc Digital Codes 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. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. The installation of wood shingles shall comply with the provisions of this section. 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. The installation of wood shakes shall comply with the provisions of this section. R905.2 Asphalt shingles. Mineral-surfaced roll roofing shall not be applied on roof. SECTION R801 GENERAL. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. (914 mm). 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. are not required for roofs sheathed with lumber having a nominal width of less than 3 feet Self-adhering polymer-modified bitumen. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. Asphalt shingles shall comply with ASTM D3462. hbbd```b``3@$R&5d}"uA$$X ,>,rLYfH 2o2dbO
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Asphalt Shingles R905.2 - IRC Provisions - PLRB Flashing and counterflashing shall be made with sheet metal. 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. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. For the most common roof sheathing in our area, which is 1/2" nominal (7/16" actual) sheathing over trusses or rafters at 24" on center . 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. 2. 12 oz/sq ft for preformed metal shingle systems. CONTINUE WITH CODE REQ'S See Table R503.2.1.1 for minimum allowable panel thickness by span and load.) 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. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. The installation of modified bitumen roofing shall comply with the provisions of this section. PDF Guidelines for asphalt shingle roofing - Minnesota 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. The installation of wood shakes shall comply with the provisions of this section. (R803.1) Spaced lumber sheathing is not allowed in Seismic Design Category D 2. Asphalt shingles shall be tested in accordance with ASTM D7158. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. Modified bitumen roofing shall comply with the standards in Table R905.11.2. DEWALT Building Code Reference: Based on the 2018 International Residential Code | Books & Magazines, Textbooks, Education & Reference, Dictionaries & Reference | eBay! Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper roofs. Roof Deck Requirements for Installation of Asphalt Shingles Technical . 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. Above-deck thermal insulation board shall comply with the standards in Table R906.2. Stainless steel fasteners are acceptable for metal roofs. Sprayed polyurethane foam roofs shall have a design. The second R-value applies when more than half of the insulation is on the interior of the mass wall. Asphalt shingles shall be used only on roof. Install drip edges at eaves and rakes. Same as Maximum Ultimate Design Wind Speed, Apply in accordance with the manufacturer's, Asphalt-saturated and asphalt-coated organic felt base sheet, Asphalt-saturated organic felt (perforated), Coal-tar primer used in roofing, dampproofing and waterproofing, ASTM B 370 minimum 16 oz/sq ft and 12 oz/sq ft high-yield copper for metal-sheet, ASTM B 209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum, 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-, As an alternative, self-adhering polymer-modified bitumen, The standard calculations contained in ASTM D 7158 assume Exposure Category B or C and. Valley flashing shall be not less than 15 inches (381 mm) wide. Materials and methods of application used for re-covering or replacing an existing, The structural roof components shall be capable of supporting the, Roof replacement shall include the removal of existing layers of, Flashings shall be reconstructed in accordance with. Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. Stainless steel fasteners are acceptable for metal roofs. %%EOF
The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. 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. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. Adjacent segments of drip edge shall be overlapped not less than 2 inches (51 mm). Asphalt shingle packaging shall bear a. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. DEWALT Building Code Reference: Based on the 2018 International Slate shingles shall be secured to the roof with two fasteners per slate. endstream
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Asphalt shingles shall comply with ASTM D3462. 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. 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. Drip edges shall extend not less than. Each bundle of shakes shall be identified by a, The installation of built-up roofs shall comply with the provisions of this section and the manufacturer's. PDF 2021 Significant Code Changes for the IRC - National Association of Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. endstream
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<. Galvanized fasteners shall be used for steel roofs. Modified bitumen roofing shall comply with the standards in Table 905.11.2. 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. Slate shingles shall be fastened to solidly sheathed roofs. Valley and flashing metal shall be a minimum uncoated thickness of 0.0179-inch (0.5 mm) zinc coated G90.