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2018 irc roof sheathing requirements

Galvanized fasteners shall be used for steel roofs. The framing assembly incudes horizontal braces, vertical retrofit studs, and compression blocks. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. Flashing for asphalt shingles shall comply with 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. (R803.1) Hold-Downs and Hardware The installation of wood shakes shall comply with the provisions of this section. A base sheet that complies with the requirements of. Stainless steel fasteners are acceptable for metal roofs. Asphalt shingles shall be tested in accordance with ASTM D7158. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. For SI: 1 ounce per square foot = 0.305 kg/m. Mineral-surfaced roll roofing shall not be applied on roof. Sprayed polyurethane foam roofs shall have a design. Please see IRC Sec- Htt4 & -`P .+Yn0a|bZN4U+yX*iNFk $ ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. Minimum headlap for slate shingles shall be in accordance with Table 905.6.5. Wood shakes shall comply with the requirements of Table R905.8.5. Stainless steel fasteners are acceptable for metal roofs. Water soaked or deteriorating decking must be replaced. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. 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. Asphalt shingle packaging shall bear a. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. The installation of mineral-surfaced roll roofing shall comply with this section. Slate shingles shall be secured to the roof with two fasteners per slate. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Asphalt shingles shall meet the classification requirements of Table 905.2.4.1 for the appropriate ultimate design wind speed. 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. or less. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. 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. The installation of asphalt shingles shall comply with the provisions of this section. Table R806.5 of the 2018 IRC lists the thermal insulation requirements for each assembly. 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. Where the existing roof covering is wood shake, slate, clay, cement or asbestos-cement tile. CHAPTER 8 ROOF-CEILING CONSTRUCTION. R905.2 Asphalt shingles. 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. 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. 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. Self-adhering polymer-modified bitumen. 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. 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. Chapter 9: Roof Assemblies, 2020 Indiana Residential Code | UpCodes Wood shakes shall comply with the requirements of Table R905.8.5. 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, Roofing materials must be installed in accordance with Chapter 9 of the 2020 Minnesota Residential Code and the manufacturer's installation 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. 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. Above-deck thermal insulation board shall comply with the standards in Table R906.2. Where required, ice barriers shall comply with Section 905.1.2. Valley flashing shall be not less than 15 inches (381 mm) wide. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Thermoset 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. Slate shingles shall comply with ASTM C 406. Liquid-applied roofing shall have a design. 2018 irc roof sheathing requirements - kazuyasu.net Slate shingles shall be fastened to solidly sheathed roofs. 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. The installation of liquid-applied roofing shall comply with the provisions of this section. Drip edges shall extend not less than. DEWALT Building Code Reference: Based on the 2018 International Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Self-adhering polymer modified bitumen. Where the roof, Where required, ice barriers shall comply with. R803.1 is for lumber sheathing. 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. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Mineral-surfaced roll roofing shall not be applied on roof. Asphalt shingles shall comply with ASTM D3462. 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. Wood shingles shall be laid with a side lap not less than 1, Roof flashing shall be not less than No. The installation of wood shingles shall comply with the provisions of this section. (914 mm). The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. DEWALT Building Code Reference: Based on the 2018 International Residential Code | Books & Magazines, Textbooks, Education & Reference, Dictionaries & Reference | eBay! 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. 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. Modified bitumen roofing shall comply with the standards in Table 905.11.2. Table R803.1 is for roof sheathing which requires 5/8 plywood with rafters 24" o.c. 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 . 2015 IRC portion of the 2018 CT State Building Code, Part III Building Planning and Construction, R907 Rooftop-Mounted Photovoltaic Systems, R909 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 Recommended Procedure for Worst-Case Testing of Atmospheric Venting Systems Under N1102.4 or N1105 Conditions 5ACH, Appendix U Solar-Ready ProvisionsDetached One- And Two-Family Dwellings, Multiple Single-Family Dwellings (Townhouses), Appendix V Wind Speeds, Seismic Design Categories and Ground Snow Loads, 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, For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in. Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. 12 oz/sq ft for preformed metal shingle systems. Asphalt shingles shall be fastened to solidly sheathed decks. 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. 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. 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 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. 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. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s. 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. The installation of asphalt shingles shall comply with the provisions of this section. Liquid-applied roofing shall have a design. 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. The 2020 Minnesota Residential Code adopts the 2018 International Residential Code (IRC). Paint systems in accordance with ASTM A 755 shall be applied over steel products with corrosion-resistant coatings complying with ASTM A 792, ASTM A 875, ASTM A 463, or ASTM A 653. Roof Sheathing Thickness | The Building Code Forum Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. Flashing and counterflashing shall be made with sheet metal. 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. 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. Table 1 shows an insulation ratio - the R-value on the top of the roof sheathing compared to the total R-value. 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. Self-adhering polymer-modified bitumen. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. 2018 irc roof sheathing requirements. Sprayed polyurethane foam roofs shall have a design. 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. 2018 International Residential Code (Irc) | Icc Digital Codes Asphalt shingle packaging shall bear a. Asphalt shingles shall comply with ASTM D3462. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. 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. RESIDENTIAL ROOFING GUIDE 2018 irc - Loveland, Colorado Galvanized fasteners shall be used for steel roofs. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. 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. Valley linings shall be installed in accordance with the manufacturer's instructions before applying shingles. 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. R803.1 Lumber sheathing. 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. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. PDF Esr-3012 - Westlake Royal Roofing Llc Asphalt shingles shall be fastened to solidly sheathed decks. Asphalt shingles shall be fastened to solidly sheathed decks. 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 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. Exception: Detached accessory structures not containing conditioned floor area. 2018 International Residential Code (Irc) | Icc Digital Codes Unvented Conditioned Attic with Spray Foam Insulation Below Roof - PNNL Interlayment shall comply with ASTM D226, Type I. 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. Interlayment shall comply with ASTM D226, Type I. 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. 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. 12 oz/sq ft for preformed metal shingle systems. endstream endobj 202 0 obj <. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. Install a two-layer #30 felt underlayment system. 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. 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. PDF 2018 IRC Wood Wall Bracing (ABM) - ICC Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. Modified bitumen roofing shall comply with the standards in Table R905.11.2. SECTION R801 GENERAL. 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. In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in. 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. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. 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. References are to the 2018 International Residential Code (sections are designated as R). Interlayment shall comply with ASTM D226, Type I. The 4-inch-wide (102 mm) strips of self-adhering polymer-modified-bitumen membrane 2018 International Residential Code (Irc) | Icc Digital Codes Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Roof penetrations shall be flashed and sealed in accordance with this chapter. Foam plastic materials and installation shall comply with. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. 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. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. 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. 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. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. Self-adhering polymer-modified bitumen. Valley linings shall be installed in accordance with the manufacturer's instructions before applying shingles. Asphalt shingles shall be fastened to solidly sheathed decks. Chapter 9: Roof Assemblies, Residential Code 2018 of Nevada | UpCodes 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 second R-value applies when more than half of the insulation is on the interior of the mass wall. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. The ratio changes based on climate severity. The installation of wood shingles shall comply with the provisions of this section. 2. The GAF VersaShield Fire-Resistant Roof Deck Protection may be placed under or over the counterbattens. Slate shingles shall be fastened to solidly sheathed roofs. Glenn conditions about your roof that may limit your product choices or affect the cost of your roofing job. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. Thermoplastic single-ply 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, 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.

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2018 irc roof sheathing requirements