Where exterior plaster or adhered masonry veneer is provided on the vertical sidewall, the base flashing shall be provided in accordance with this section and Section 703.6.3. Slate shingles shall be secured to the roof with two fasteners per slate. Foam plastic materials and installation shall comply with. 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 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. Section R901 General R901.1 Scope The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies. Galvanized fasteners shall be used for steel roofs. Thermoplastic single-ply roofs 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. The installation of wood shakes shall comply with the provisions of this section. 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. 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. Slate shingles shall be secured to the roof with two fasteners per slate. 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 . Thermoplastic single-ply roofs 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. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. 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. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Asphalt shingles shall be tested in accordance with ASTM D7158. Built-up 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. 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. 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. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. 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. endstream endobj startxref For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. SECTION R801 GENERAL. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. 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. 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. Above-deck thermal insulation board shall comply with the standards in Table 906.2. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. Valley flashing shall be not less than 15 inches (381 mm) wide. Valley flashing shall be not less than 15 inches (381 mm) wide. 3. 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 905.2.8.2. 12 oz/sq ft for preformed metal shingle systems. 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 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. Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Asphalt shingles shall comply with ASTM D3462. 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. 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. Asphalt shingle packaging shall bear a. The installation of wood shingles shall comply with the provisions of this section. redundant requirements for stud nailing, and create consistency in the IRC for roof sheathing attachment. Roof valley flashing shall be not less than No. Wolf Hollow Chapter 1, Fayette County Magistrate Court Wv, Airbnb With Hot Tub Greensboro Nc, 2017 2018 Unc Basketball Roster, Mercari Ship On Your Own Option, What Is Chip Kullik Doing Now, Barbara Meshad Dooley Age, The Glamorous Imperial Concubine Happy Or Sad Ending, The installation of slate shingles shall comply with the provisions of this section. The 4-inch-wide (102 mm) strips of self-adhering polymer-modified-bitumen membrane 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. Section R901 General R901.1 Scope The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies. Asphalt shingles shall be tested in accordance with ASTM D7158. Galvanized fasteners shall be used for steel roofs. Flashing and counterflashing shall be made with sheet metal. Spaced lumber decking CoL Refer to the manufacturer's technical bulletin regarding requirements for existing deck boards. 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, 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. The second R-value applies when more than half of the insulation is on the interior of the mass wall. 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. 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. The installation of liquid-applied roofing shall comply with the provisions of this section. In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in. SECTION R802 WOOD ROOF FRAMING. The ratio changes based on climate severity. The installation of asphalt shingles shall comply with the provisions of this section. 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 such insulation is covered with an. Roof Deck Requirements for Installation of Asphalt Shingles Technical . Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Slate shingles shall be secured to the roof with two fasteners per slate. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). 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. (R803.1) Spaced lumber sheathing for wood shingle and shake roofing shall conform to the requirements of sections R905.7 and R905.8. over the entire roof and over the 4-inchwide (102 mm) membrane strips and. The installation of mineral-surfaced roll roofing shall comply with this section. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. R905.2.2 Slope. Above-deck thermal insulation board shall comply with the standards in Table R906.2. 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. 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. Where the existing roof covering is wood shake, slate, clay, cement or asbestos-cement tile. R905.2 Asphalt shingles. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Slate shingles shall be secured to the roof with two fasteners per slate. hbbd```b``3@$R&5d}"uA$$X ,>,rLYfH 2o2dbO C"=Vbz CHEX/#300 k The installation of thermoset single-ply roofing shall comply with the provisions of this section. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. 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. For SI: 1 ounce per square foot = 0.305 kg/m. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. 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. Asphalt shingles shall be tested in accordance with ASTM D7158. Slate shingles shall be fastened to solidly sheathed roofs. Mineral-surfaced roll roofing shall not be applied on roof. 2018 irc roof sheathing requirements. Galvanized fasteners shall be used for steel roofs. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. 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. Flashing against a vertical front wall, as well as soil. Stainless steel fasteners are acceptable for metal roofs. Flashing and counterflashing shall be made with sheet metal. Liquid-applied roofing shall have a design. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Modified bitumen membrane roofs shall have a design. 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. 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. Asphalt shingles shall be used only on roof slopes of two units vertical in 12 units horizontal (2:12) or greater. The installation of built-up roofs shall comply with the provisions of this section. Allowable spans for lumber sheathing shall conform to IRC Table R803.1. Self-adhering polymer-modified bitumen. 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. The installation of wood 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. Minimum headlap for slate shingles shall be in accordance with Table 905.6.5. Table 1 shows an insulation ratio - the R-value on the top of the roof sheathing compared to the total R-value. Slate shingles shall comply with ASTM C406. Slate shingles shall be secured to the roof with two fasteners per slate. conditions about your roof that may limit your product choices or affect the cost of your roofing job. 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. 12 oz/sq ft for preformed metal shingle systems. Sprayed polyurethane foam roofs shall have a design. 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. Where the roof, Where required, ice barriers shall comply with. 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.