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 thermoplastic single-ply roofing shall comply with the provisions of this section. Asphalt shingle packaging shall bear a. 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. Flashing against a vertical front wall, as well as soil. 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. Galvanized fasteners shall be used for steel roofs. Valley linings shall be installed in accordance with the manufacturer's instructions before applying shingles. Asphalt shingles shall be fastened to solidly sheathed decks. Rooftop-mounted photovoltaic systems shall be installed in accordance with the manufacturer's instructions. Slate shingles shall comply with ASTM C406. PDF 2018 IRC Re-Roof Guide - Town of Severance Chapter 9: Roof Assemblies, 2020 Indiana Residential Code | UpCodes Asphalt shingles shall be tested in accordance with ASTM D7158. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. 2018 IRC Residential Building Guides for Homeowners Re-Roof - Coweta For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. Asphalt shingles shall be tested in accordance with ASTM D7158. Wood shingles shall be laid with a side lap not less than 1, Roof flashing shall be not less than No. 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 In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in. 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 . Sprayed polyurethane foam roofs shall have a design. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. arrow_right. 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. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. Spaced lumber decking CoL Refer to the manufacturer's technical bulletin regarding requirements for existing deck boards. 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. Glenn Interlayment shall comply with ASTM D226, Type I. Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. SECTION R803 ROOF SHEATHING. Asphalt shingles shall comply with ASTM D3462. Modified bitumen roofing shall comply with the standards in Table R905.11.2. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. The installation of mineral-surfaced roll roofing shall comply with this section. Valley and flashing metal shall be a minimum uncoated thickness of 0.0179-inch (0.5 mm) zinc coated G90. R905.2.1 Sheathing requirements. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. The installation of liquid-applied roofing shall comply with the provisions of this section. SECTION R804 COLD-FORMED STEEL ROOF FRAMING. 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. arrow_right. Mineral-surfaced roll roofing shall not be applied on roof. 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. R905.2.2 Slope. The installation of built-up roofs shall comply with the provisions of this section. Where the existing roof covering is slate, clay, cement or asbestos-cement tile. Wood shakes shall comply with the requirements of Table R905.8.5. Liquid-applied roofing shall have a design. The installation of wood shakes shall comply with the provisions of this section. 12 oz/sq ft for preformed metal shingle systems. Foam plastic materials and installation shall comply with Section 316. Where the existing roof has two or more applications of any type of roof covering. Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. Modified bitumen 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. Valley flashing shall be not less than 15 inches (381 mm) wide. 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) IRC Section Table 301.5 Minimum Uniformly Distributed Live Loads: For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. 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. 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 4-inch-wide (102 mm) strips of self-adhering polymer-modified-bitumen membrane The installation of slate shingles shall comply with the provisions of this section. Valley flashing shall be not less than 15 inches (381 mm) wide. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. Asphalt shingles shall be fastened to solidly sheathed decks. Asphalt shingles shall be tested in accordance with ASTM D7158. Wood shakes shall comply with the requirements of Table R905.8.5. 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. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. Nominally, 2-by- For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s. Chapter 9: Roof Assemblies, UCC One- & Two-Family Dwelling - UpCodes 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. The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. Htt4 & -`P .+Yn0a|bZN4U+yX*iNFk $ Sections of flashing shall have an end lap of not less than 4 inches (102 mm). 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. R905.2.4.1 Wind Resistance of Asphalt Shingles, R905.14 Sprayed Polyurethane Foam Roofing, Section R907 Rooftop-Mounted Photovoltaic Systems, R907.1 Rooftop-Mounted Photovoltaic Systems, Section R909 Rooftop-Mounted Photovoltaic Panel Systems, Building-integrated photovoltaic products. hbbd```b``3@$R&5d}"uA$$X ,>,rLYfH 2o2dbO C"=Vbz CHEX/#300 k Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Drip edges shall extend not less than. Part III Building Planning and Construction, 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 904 and 905. In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in. The installation of asphalt shingles shall comply with the provisions of this section. The installation of modified bitumen roofing shall comply with the provisions of this section. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. 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. Wood shakes shall comply with the requirements of Table 905.8.5. The installation of thermoset single-ply roofing shall comply with the provisions of this section. Base and cap flashing shall be installed in accordance with manufacturer's instructions. Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. Slate shingles shall be fastened to solidly sheathed roofs. Allowable spans for lumber used as roof sheathing shall conform to Table R803.1. 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. 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. 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. A minimum 4-inch-wide (102 mm) strip of selfadhering polymer-modified bitumen membrane complying with ASTM D 1970, installed in accordance with the manufacturer's instructions for the deck material, shall be applied over all joints in the roof decking. Wood shakes shall comply with the requirements of Table R905.8.5. Sprayed polyurethane foam roofs shall have a design. 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. The installation of slate shingles shall comply with the provisions of this section. Sprayed polyurethane foam roofs shall have a design. Asphalt shingles shall be used only on roof. Chapter 9: Roof Assemblies, Residential Code 2018 of Maryland | UpCodes 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 installation of wood shingles 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. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Stainless steel fasteners are acceptable for metal roofs. 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. The second R-value applies when more than half of the insulation is on the interior of the mass wall. 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. 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. 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. The installation of asphalt shingles shall comply with the provisions of this section. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. The installation of wood shakes shall comply with the provisions of this section. Water soaked or deteriorating decking must be replaced. Asphalt shingles shall comply with ASTM D3462. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Above-deck thermal insulation board shall comply with the standards in Table 906.2. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. 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. 0 Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. PDF Roof Deck Requirements for Installation of Asphalt Shingles Technical The installation of mineral-surfaced roll roofing shall comply with this section. Liquid-applied roofing shall be installed in accordance with this chapter and the. 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. CHAPTER 8 ROOF-CEILING CONSTRUCTION. The installation of asphalt shingles shall comply with the provisions of this section. The installation of asphalt shingles shall comply with the provisions of this section. Brace gable end walls taller than 48. inches in height to resist wind forces by installing a framing assembly at each gable wall stud. Asphalt shingles shall be tested in accordance with ASTM D7158. Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper roofs. Interlayment shall comply with ASTM D226, Type I. 3. Roof Deck Requirements for Installation of Asphalt Shingles Technical . 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. 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. Asphalt shingle packaging shall bear a. 2018 International Residential Code (Irc) | Icc Digital Codes Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. 2021 International Residential Code (Irc) | Icc Digital Codes The GAF VersaShield Fire-Resistant Roof Deck Protection may be placed under or over the counterbattens. A base sheet that complies with the requirements of. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. Slate shingles shall be secured to the roof with two fasteners per slate. PDF Residential Roof Sheathing and Shear Walls or Braced Wall Panels Asphalt shingles shall be tested in accordance with ASTM D7158. The installation of liquid-applied roofing shall comply with the provisions of this section. The ratio changes based on climate severity.

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