Base and cap flashing shall be installed in accordance with manufacturer's instructions. 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 asphalt shingles shall comply with the provisions of this section. Mineral-surfaced roll roofing shall not be applied on roof. The installation of wood shakes shall comply with the provisions of this section. Slate shingles 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. Valley linings shall be installed in accordance with the manufacturer's instructions before applying shingles. The installation of thermoset single-ply roofing shall comply with the provisions of this section. 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. The installation of liquid-applied roofing shall comply with the provisions of this section. 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. Glenn Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in. R905.2.1 Sheathing requirements. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. 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. 2018 irc roof sheathing requirements. Section R901 General R901.1 Scope The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies. Mineral-surfaced roll roofing shall not be applied on roof. See Table R503.2.1.1 for minimum allowable panel thickness by span and load.) 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. Galvanized fasteners shall be used for steel roofs. Stainless steel fasteners are acceptable for metal roofs. 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. Modified bitumen roofing shall comply with the standards in Table R905.11.2. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. 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. Above-deck thermal insulation board shall comply with the standards in Table 906.2. Table R806.5 of the 2018 IRC lists the thermal insulation requirements for each assembly. 12 oz/sq ft for preformed metal shingle systems. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. 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. R905.2 Asphalt shingles. Each bundle of shakes shall be identified by a. Asphalt shingles shall be used only on roof slopes of two units vertical in 12 units horizontal (2:12) or greater. 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. Valley and flashing metal shall be a minimum uncoated thickness of 0.0179-inch (0.5 mm) zinc coated G90. 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. 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. 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. SECTION R804 COLD-FORMED STEEL ROOF FRAMING. 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. R905.2Asphalt shingles. Section R901 General R901.1 Scope The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies. Htt4 & -`P .+Yn0a|bZN4U+yX*iNFk $ Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. 2018 IRC Simplified Wall Bracing Provisions 4 Objectives Upon completion, participants will be better able to: 1. General Re-Roof Requirements . The installation of wood shingles shall comply with the provisions of this section. Self-adhering polymer-modified bitumen. 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. A base sheet that complies with the requirements of Section 1507.11.2 of the. 1. The installation of mineral-surfaced roll roofing shall comply with this section. Table 1 shows an insulation ratio - the R-value on the top of the roof sheathing compared to the total R-value. 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. Spaced lumber decking CoL Refer to the manufacturer's technical bulletin regarding requirements for existing deck boards. SECTION R801 GENERAL. Stainless steel fasteners are acceptable for metal roofs. Sheathing Requirements R905.2.1 Asphalt shingles shall be fastened to solidly sheathed decks. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. Valley flashing shall be not less than 15 inches (381 mm) wide. Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper roofs. Liquid-applied roofing shall have a design. SECTION R803 ROOF SHEATHING. Foam plastic materials and installation shall comply with Section 316. 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. Slate shingles shall be fastened to solidly sheathed roofs. Galvanized fasteners shall be used for steel roofs. The installation of thermoset single-ply roofing shall comply with the provisions of this section. 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. are not required for roofs sheathed with lumber having a nominal width of less than 3 feet Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Flashing and counterflashing shall be made with sheet metal. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. 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. Above-deck thermal insulation board shall comply with the standards in Table R906.2. Foam plastic materials and installation shall comply with. 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. Table R803.1 is for roof sheathing which requires 5/8 plywood with rafters 24" o.c. Foam plastic materials and installation shall comply with. 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. 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. Thermoset 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. Slate shingles shall be fastened to solidly sheathed roofs. Above-deck thermal insulation board shall comply with the standards in Table R906.2. SECTION R802 WOOD ROOF FRAMING. 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 . The installation of wood shakes shall comply with the provisions of this section. 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 secured to the roof with two fasteners per slate. Slate shingles shall comply with ASTM C406. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. 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 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. Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper roofs. The 4-inch-wide (102 mm) strips of self-adhering polymer-modified-bitumen membrane The installation of thermoset single-ply roofing shall comply with the provisions of this section. 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. %PDF-1.6 % Thermoset single-ply membrane roofs shall have a design. 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. 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. 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. 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. It guides the participant through an in-depth review and analysis of the bracing requirements for wood-framed residential structures. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. The installation of slate shingles shall comply with the provisions of this section. Class A, B or C roofing shall be installed in, 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 slate shingles shall comply with the provisions of this section. (R803.1) Spaced lumber sheathing is not allowed in Seismic Design Category D 2. hbbd```b``3@$R&5d}"uA$$X ,>,rLYfH 2o2dbO C"=Vbz CHEX/#300 k arrow_right. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. Valley flashing shall be not less than 15 inches (381 mm) wide. The second R-value applies when more than half of the insulation is on the interior of the mass wall. 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. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Thermoplastic single-ply membrane roofs shall have a design. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. Flashing and counterflashing shall be made with sheet metal. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. Asphalt shingles shall be fastened to solidly sheathed decks. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. Modified bitumen roofing shall comply with the standards in Table R905.11.2. Asphalt shingles shall comply with ASTM D3462. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. Interlayment shall comply with ASTM D226, Type I. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. 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. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. 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. or less. For SI: 1 ounce per square foot = 0.305 kg/m. Drip edges shall extend not less than. 12 oz/sq ft for preformed metal shingle systems. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. Asphalt shingles shall be used only on roof. 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. over the entire roof and over the 4-inchwide (102 mm) membrane strips and. 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. Stainless steel fasteners are acceptable for metal roofs. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. Asphalt shingles shall be tested in accordance with ASTM D7158. Thermoplastic single-ply 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). Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. 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. Foam plastic materials and installation shall comply with. The installation of wood shakes shall comply with the provisions of this section. The installation of built-up roofs shall comply with the provisions of this section. Asphalt shingles shall comply with ASTM D3462. 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. 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. 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. 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 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. Asphalt shingles shall comply with ASTM D3462. 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. Roof valley flashing shall be not less than No. Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. Drip edges shall extend not less than. Foam plastic materials and installation shall comply with. roof sheathing, skylights, change of roof pitch, addition or relocation of mechanical units, or installation of heavier materials than were previously installed. Valley flashing shall be not less than 15 inches (381 mm) wide. The installation of wood shakes 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. Slate shingles shall comply with ASTM C406. 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. 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 liquid-applied roofing shall comply with the provisions of this section. Asphalt shingles shall be used only on roof. 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. 3. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s. Roof valley flashing shall be not less than No. 2. 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. 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. 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. 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 Slate shingles shall comply with ASTM C406. Mineral-surfaced roll roofing shall not be applied on roof. 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.

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