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. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. 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. 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. Nominally, 2-by- CONTINUE WITH CODE REQ'S Roofing materials must be installed in accordance with Chapter 9 of the 2020 Minnesota Residential Code and the manufacturer's installation Asphalt shingles shall be fastened to solidly sheathed decks. Drip edges shall extend not less than. The installation of asphalt shingles shall comply with the provisions of this section. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in. 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. CHAPTER 8 ROOF-CEILING CONSTRUCTION. 233 0 obj <>/Filter/FlateDecode/ID[<4D23A6406EEE004484C52F82EDD55E2A>]/Index[201 60]/Info 200 0 R/Length 141/Prev 323429/Root 202 0 R/Size 261/Type/XRef/W[1 3 1]>>stream Roof Deck Requirements for Installation of Asphalt Shingles Technical . Foam plastic materials and installation shall comply with. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Asphalt shingles shall be fastened to solidly sheathed decks. 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. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. Above-deck thermal insulation board shall comply with the standards in Table R906.2. Slate shingles shall comply with ASTM C 406. Above-deck thermal insulation board shall comply with the standards in Table 906.2. The installation of thermoset single-ply roofing shall comply with the provisions of this section. A base sheet that complies with the requirements of. 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. Thermoplastic single-ply membrane roofs shall have a design. Where the existing roof covering is wood shake, slate, clay, cement or asbestos-cement tile. 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. 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. 3. 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. 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. hb```g``:AX,;nkga3l~/ * The installation of asphalt shingles shall comply with the provisions of this section. 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. Slate shingles shall comply with ASTM C406. 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. For SI: 1 ounce per square foot = 0.305 kg/m. 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. 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. Htt4 & -`P .+Yn0a|bZN4U+yX*iNFk $ Asphalt shingles shall comply with ASTM D3462. 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. redundant requirements for stud nailing, and create consistency in the IRC for roof sheathing attachment. 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. The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. 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. 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. Brace gable end walls taller than 48. inches in height to resist wind forces by installing a framing assembly at each gable wall stud. 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. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. 2018, 2021 IECC: Mass walls shall be in accordance with Section R402.2.5 (N1102.2.5 in 2018 IRC). Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. 2. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. The installation of wood shakes shall comply with the provisions of this section. endstream endobj startxref Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. %PDF-1.6 % SECTION R802 WOOD ROOF FRAMING. Asphalt shingles shall be tested in accordance with ASTM D7158. Table 1 shows an insulation ratio - the R-value on the top of the roof sheathing compared to the total R-value. Flashing and counterflashing shall be made with sheet metal. 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. Asphalt shingles shall be tested in accordance with ASTM D7158. 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. Asphalt shingles shall be fastened to solidly sheathed decks. Foam plastic materials and installation shall comply with Section 316. 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. arrow_right. Slate shingles shall be fastened to solidly sheathed 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 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. Self-adhering polymer-modified bitumen. Galvanized fasteners shall be used for steel roofs. Roof valley flashing shall be not less than No. 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. 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. Base and cap flashing shall be installed in accordance with manufacturer's instructions. 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. Where the existing roof has two or more applications of any type of roof covering. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Install 7/16 in.-structural sheathing (OSB or plywood) on the vertical face of the gable end wall. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. 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. 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. Section R901 General R901.1 Scope The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies. General Re-Roof Requirements . Valley flashing shall be not less than 15 inches (381 mm) wide. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). arrow_right. 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. over the entire roof and over the 4-inchwide (102 mm) membrane strips and. 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. The installation of thermoset single-ply roofing shall comply with the provisions of this section. 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. 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. 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. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. The installation of slate shingles shall comply with the provisions of this section. 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. 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. Slate shingles shall be secured to the roof with two fasteners per slate. The lecture and activity format allows participants to discuss the changes, reasons for the changes, and answer knowledge review questions. R905.2.2 Slope. Asphalt shingles shall be fastened to solidly sheathed decks. 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. 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. 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 Valley and flashing metal shall be a minimum uncoated thickness of 0.0179-inch (0.5 mm) zinc coated G90. Asphalt shingle packaging shall bear a. Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. Roof valley flashing shall be not less than No. R905.2.1 Sheathing requirements. Slate shingles shall be secured to the roof with two fasteners per slate. The installation of wood shingles shall comply with the provisions of this section. Sheathing Requirements R905.2.1 Asphalt shingles shall be fastened to solidly sheathed decks. 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 open valleys, valley lining of two plies of mineral-surfaced roll roofing, complying with ASTM D3909 or ASTM D6380 Class M, shall be permitted. 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. 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 Section 703.8.2.2. 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. Where required, ice barriers shall comply with Section 905.1.2. Asphalt shingles shall be fastened to solidly sheathed decks. Asphalt shingles shall be used only on roof. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. The installation of mineral-surfaced roll roofing shall comply with this section. Above-deck thermal insulation board shall comply with the standards in Table R906.2. See Table R503.2.1.1 for minimum allowable panel thickness by span and load.) 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. Slate shingles shall comply with ASTM C406. 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. 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. Slate shingles shall be fastened to solidly sheathed roofs. Wood shakes shall comply with the requirements of Table R905.8.5. The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. 3. arrow_right. SECTION R801 GENERAL. Wood shakes shall comply with the requirements of Table R905.8.5. Asphalt shingles shall be used only on roof. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. Liquid-applied roofing 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. Sprayed polyurethane foam roofs shall have a design. Valley and flashing metal shall be a minimum uncoated thickness of 0.0179-inch (0.5 mm) zinc coated G90. DEWALT Building Code Reference: Based on the 2018 International Residential Code | Books & Magazines, Textbooks, Education & Reference, Dictionaries & Reference | eBay! Galvanized fasteners shall be used for steel roofs. Valley flashing shall be not less than 15 inches (381 mm) wide. SECTION R803 ROOF SHEATHING. 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. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. 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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