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Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. 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. 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. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. For closed valleys (valley covered with shingles), valley lining of one ply of smooth roll roofing complying with ASTM D 6380 and not less than 36 inches wide (914 mm) or valley lining as described in Item 1 or 2 shall be permitted. 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. Stainless steel fasteners are acceptable for metal roofs. 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. Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. (R803.1) Spaced lumber sheathing is not allowed in Seismic Design Category D 2. Asphalt shingle packaging shall bear a. Liquid-applied roofing shall have a design. Modified bitumen roofing shall comply with the standards in Table 905.11.2. 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. 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. 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. R905.2 Asphalt shingles. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. 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. 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. Liquid-applied roofing shall have a design. Sprayed polyurethane foam roofs shall have a design. 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. (R803.1) Hold-Downs and Hardware 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. SECTION R801 GENERAL. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. The installation of liquid-applied roofing 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. Sprayed polyurethane foam roofs shall have a design. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. 2 RESIDENTIAL ROOFING GUIDE 2018 IRC. References are to the 2018 International Residential Code (sections are designated as R). Self-adhering polymer-modified bitumen. Slate shingles shall be fastened to solidly sheathed roofs. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. A base sheet that complies with the requirements of Section 1507.11.2 of the. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s. A base sheet that complies with the requirements of. 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. 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. R803.1 is for lumber sheathing. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. 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. 12 oz/sq ft for preformed metal shingle systems. 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. 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. are not required for roofs sheathed with lumber having a nominal width of less than 3 feet 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. Stainless steel fasteners are acceptable for metal roofs. Self-adhering polymer-modified bitumen. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Mineral-surfaced roll roofing shall not be applied on roof. Self-adhering polymer-modified bitumen. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. A base sheet that complies with the requirements of. 12 oz/sq ft for preformed metal shingle systems. The second R-value applies when more than half of the insulation is on the interior of the mass wall. The installation of mineral-surfaced roll roofing shall comply with this section. Asphalt shingles shall be fastened to solidly sheathed decks. The installation of mineral-surfaced roll roofing shall comply with this section. Roof valley flashing shall be not less than No. 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 installation of thermoplastic single-ply roofing shall comply with the provisions of this section. 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. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. 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. Section R804 Cold-Formed Steel Roof Framing Section R806 Roof Ventilation Section R807 Attic Access Chapter 9 Roof Assemblies Mineral-surfaced roll roofing shall conform to ASTM D 3909 or ASTM D 6380, 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, 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. Foamed-in-place roof insulation 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. 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. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Interlayment shall comply with ASTM D226, Type I. The installation of asphalt shingles shall comply with the provisions of this section. 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. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. 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. Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. Modified bitumen roofing shall comply with the standards in Table R905.11.2. The installation of liquid-applied roofing shall comply with the provisions of this section. 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. Slate shingles shall comply with ASTM C406. The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. 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 mineral-surfaced roll roofing shall comply with 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. 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. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. 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 bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. Slate shingles shall be fastened to solidly sheathed roofs. Valley flashing shall be not less than 15 inches (381 mm) wide. Where the existing roof has two or more applications of any type of roof covering. 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. Where required, an ice barrier shall comply with Section 905.1.2. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). 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 wood shingles shall comply with the provisions of this section. 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 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. hbbd```b``3@$R&5d}"uA$$X ,>,rLYfH 2o2dbO C"=Vbz CHEX/#300 k The installation of slate shingles shall comply with the provisions of this section. 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. Asphalt shingles shall be tested in accordance with ASTM D7158. 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. Asphalt shingles shall comply with ASTM D3462. R905.2Asphalt shingles. The installation of asphalt shingles shall comply with the provisions of this section. The installation of wood shakes shall comply with the provisions of this section. 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. Liquid-applied roofing shall have a design. 260 0 obj <>stream Base and cap flashing shall be installed in accordance with 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. The 4-inch-wide (102 mm) strips of self-adhering polymer-modified-bitumen membrane 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. Above-deck thermal insulation board shall comply with the standards in Table R906.2. Asphalt shingles shall comply with ASTM D3462. Where the existing roof or roof covering is water-soaked or has deteriorated to the point that the existing roof or roof covering is not adequate as a base for additional roofing. Flashing and counterflashing shall be made with sheet metal. endstream endobj startxref Roof valley flashing shall be not less than No. 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. 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. 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 . Real wood. arrow_right. 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. Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. 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. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper roofs. The installation of wood shingles shall comply with the provisions of this section. 2018 IRC. Adjacent segments of drip edge shall be overlapped not less than 2 inches (51 mm). Foam plastic materials and installation shall comply with. 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. Galvanized fasteners shall be used for steel roofs. Glenn 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. 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. 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. Liquid-applied roofing shall have a design. 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.
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