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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. 2. The installation of wood shingles shall comply with the provisions of this section. Galvanized fasteners shall be used for steel roofs. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. arrow_right. 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. 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. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. Asphalt shingles shall be used only on roof slopes of two units vertical in 12 units horizontal (2:12) or greater. Where the existing roof has two or more applications of any type of roof covering. 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. 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. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. References are to the 2018 International Residential Code (sections are designated as R). Plywood is a wood structural panel covered in R803.2.2 which points you to R503.2.1.1 There is a lot of cross over between chapters 5, 6, and 8, so don't just go with the chapter titles of floor, wall, roof. Unvented Conditioned Attic with Spray Foam Insulation Below Roof - PNNL 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. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. 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. Roof Sheathing Thickness | The Building Code Forum 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. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. Slate shingles shall be secured to the roof with two fasteners per slate. 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. PDF Esr-3012 - Westlake Royal Roofing Llc The second R-value applies when more than half of the insulation is on the interior of the mass wall. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 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. The ratio changes based on climate severity. The installation of slate shingles shall comply with the provisions of this section. Where required, ice barriers shall comply with Section 905.1.2. 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. The lecture and activity format allows participants to discuss the changes, reasons for the changes, and answer knowledge review questions. 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. Allowable spans for lumber sheathing shall conform to IRC Table R803.1. SECTION R802 WOOD ROOF FRAMING. 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. Flashing and counterflashing shall be made with sheet metal. Section R901 General R901.1 Scope The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies. Chapter 9: Roof Assemblies, 2020 Indiana Residential Code | UpCodes Table 1 shows an insulation ratio - the R-value on the top of the roof sheathing compared to the total R-value. The GAF VersaShield Fire-Resistant Roof Deck Protection may be placed under or over the counterbattens. Chapter 9: Roof Assemblies, 2018 South Carolina Residential Code | UpCodes 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. Valley linings shall be installed in accordance with the manufacturer's instructions before applying shingles. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. R905.2 Asphalt shingles. 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. CONTINUE WITH CODE REQ'S Foamed-in-place roof insulation 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. Wood shakes shall comply with the requirements of Table 905.8.5. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. Galvanized fasteners shall be used for steel roofs. PDF 2018 International Residential Code Changes Related to Wood Construction Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Liquid-applied roofing shall comply with ASTM C 836, C 957, D 1227, D 3468, D 6083, D 6694 or D 6947. 2018 International Residential Code (IRC) COPYRIGHT PREFACE EFFECTIVE USE OF THE INTERNATIONAL RESIDENTIAL CODE arrow_right CHAPTER 1 SCOPE AND ADMINISTRATION arrow_right CHAPTER 2 DEFINITIONS arrow_right CHAPTER 3 BUILDING PLANNING arrow_right CHAPTER 4 FOUNDATIONS arrow_right CHAPTER 5 FLOORS arrow_right CHAPTER 6 WALL CONSTRUCTION arrow_right 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. 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. 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. A new Footnote j 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. 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. hbbd```b``3@$R&5d}"uA$$X ,>,rLYfH 2o2dbO C"=Vbz CHEX/#300 k Chapter 9: Roof Assemblies, 2015 IRC portion of the 2018 CT - UpCodes 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. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Galvanized fasteners shall be used for steel roofs. Water soaked or deteriorating decking must be replaced. Roof valley flashing shall be not less than No. The installation of asphalt shingles shall comply with the provisions of this section. 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. Flashing against a vertical front wall, as well as soil. 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. 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. Lateral Bracing in Gable End Walls | Building America Solution Center 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. Asphalt shingles shall be fastened to solidly sheathed decks. 12 oz/sq ft for preformed metal shingle systems. The installation of slate shingles shall comply with the provisions of this section. The installation of slate shingles shall comply with the provisions of this section. The installation of thermoset single-ply roofing shall comply with the provisions of this section. PDF Residential Roof Sheathing and Shear Walls or Braced Wall Panels 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. 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. The installation of wood shingles shall comply with the provisions of this section. Above-deck thermal insulation board shall comply with the standards in Table R906.2. satisfy the requirements of 2021 IBC Section 1512, 2018 and 2015 IBC Section 1511, 2012, 2009 and 2006 IBC Section 1510, 2018 and 2021, 2018 and 2015 IRC Section R908 or 2012, 2009 or 2006 IRC Section R907. 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. endstream endobj 202 0 obj <. 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. Slate shingles shall be fastened to solidly sheathed roofs. Valley flashing shall be not less than 15 inches (381 mm) wide. 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. 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. 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. Sprayed polyurethane foam roofs shall have a design. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. 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. Galvanized fasteners shall be used for steel 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. Glenn Section R901 General R901.1 Scope The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies. The installation of liquid-applied roofing 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 2018 IRC specifies the ratios based on climate zone. R905.2Asphalt shingles. Fasteners for asphalt shingles shall be galvanized steel, stainless steel, aluminum or copper roofing nails, minimum 12-gage [0.105 inch (3 mm)] shank with a minimum 3 / 8 -inch- diameter (9.5 mm) head, complying with ASTM F1667, of a length to penetrate through the roofing materials and not less than 3 / 4 inch (19.1 mm) into the roof sheathing. The installation of liquid-applied roofing shall comply with the provisions of this section. Flashing and counterflashing shall be made with sheet metal. A base sheet that complies with the requirements of. Asphalt Shingles R905.2 - IRC Provisions - PLRB Liquid-applied roofing shall have a design. 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. Nominally, 2-by- 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. 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. Asphalt shingles shall be used only on roof. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. Foam plastic materials and installation shall comply with. 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 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. 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. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. 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. Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper 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. Slate shingles shall be fastened to solidly sheathed roofs. Minimum headlap for slate shingles shall be in accordance with Table 905.6.5. 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. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s. PDF Inspection Checklist - Residential Re-Roof - MyBuildingPermit Interlayment shall comply with ASTM D226, Type I. 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. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. conditions about your roof that may limit your product choices or affect the cost of your roofing job. 0 The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. Liquid-applied roofing shall comply with ASTM C836, C957, D1227, D3468, D6083, D6694 or D6947. Roof Deck Requirements for Installation of Asphalt Shingles Technical . Asphalt shingle packaging shall bear a. Liquid-applied roofing shall have a design. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. Real wood. 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 fastened to solidly sheathed decks. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Wood shakes shall comply with the requirements of Table R905.8.5. DEWALT Building Code Reference: Based on the 2018 International Residential Code | Books & Magazines, Textbooks, Education & Reference, Dictionaries & Reference | eBay! Install 7/16 in.-structural sheathing (OSB or plywood) on the vertical face of the gable end wall. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. 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. 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. (914 mm). Drip edges shall extend not less than. 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. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s. 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. Where the existing roof has two or more applications of any type of roof . Above-deck thermal insulation board shall comply with the standards in Table 906.2. 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 . arrow_right. Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. 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. 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 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. (R803.1) Hold-Downs and Hardware Above-deck thermal insulation board shall comply with the standards in Table R906.2. 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 bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. Roof valley flashing shall be not less than No. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. 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. PDF 2018 IRC Wood Wall Bracing (ABM) - ICC Slate shingles shall be fastened to solidly sheathed roofs. the 2018 International Residential Code (IRC) simplified wall bracing requirements. Please see IRC Sec- 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. The 2020 Minnesota Residential Code adopts the 2018 International Residential Code (IRC). Slate shingles shall comply with ASTM C406. 2021 International Residential Code (Irc) | Icc Digital Codes Interlayment shall comply with ASTM D226, Type I. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. The installation of thermoset single-ply roofing shall comply with the provisions of this section. ASTM B209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum thickness for pressformed shingles. redundant requirements for stud nailing, and create consistency in the IRC for roof sheathing attachment. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. hb```g``:AX,;nkga3l~/ * Htt4 & -`P .+Yn0a|bZN4U+yX*iNFk $ Adjacent segments of drip edge shall be overlapped not less than 2 inches (51 mm). 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. 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. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. Asphalt shingles shall be fastened to solidly sheathed decks. The installation of asphalt shingles shall comply with the provisions of this section.