Sheathing Requirements R905.2.1 Asphalt shingles shall be fastened to solidly sheathed decks. The second R-value applies when more than half of the insulation is on the interior of the mass wall. Asphalt shingles shall be fastened to solidly sheathed decks. 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. Where the existing roof covering is slate, clay, cement or asbestos-cement tile. Asphalt shingles shall be tested in accordance with ASTM D7158. Liquid-applied roofing shall have a design. 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. Where the existing roof has two or more applications of any type of roof covering. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. Mineral-surfaced roll roofing shall not be applied on roof. Spaced lumber decking CoL Refer to the manufacturer's technical bulletin regarding requirements for existing deck boards. RESIDENTIAL ROOFING GUIDE 2018 irc - Loveland, Colorado Rooftop-mounted photovoltaic systems shall be installed in accordance with the manufacturer's instructions. Roof valley flashing shall be not less than No. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Each bundle of shakes shall be identified by a, The installation of built-up roofs shall comply with the provisions of this section and the manufacturer's. The installation of liquid-applied roofing shall comply with the provisions of this section. Nominally, 2-by- Drip edges shall extend not less than. The ratio changes based on climate severity. DEWALT Building Code Reference: Based on the 2018 International Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. Adjacent segments of drip edge shall be overlapped not less than 2 inches (51 mm). 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 Asphalt shingles shall comply with ASTM D3462. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. PDF Inspection Checklist - Residential Re-Roof - MyBuildingPermit Section R804 Cold-Formed Steel Roof Framing Section R806 Roof Ventilation Section R807 Attic Access Chapter 9 Roof Assemblies Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Slate shingles shall be fastened to solidly sheathed roofs. The installation of liquid-applied roofing shall comply with the provisions of this section. Thermoplastic single-ply roofs 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. The installation of wood shingles shall comply with the provisions of this section. Asphalt shingles shall be tested in accordance with ASTM D7158. The installation of slate shingles shall comply with the provisions of this section. 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. The installation of mineral-surfaced roll roofing shall comply with this section. Chapter 9: Roof Assemblies, 2015 IRC portion of the 2018 CT - UpCodes Liquid-applied roofing shall have a design. 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. arrow_right. Slate shingles shall be fastened to solidly sheathed roofs. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Stainless steel fasteners are acceptable for metal roofs. Fasteners for asphalt shingles shall be galvanized steel, stainless steel, aluminum or copper roofing nails, minimum 12-gage [0.105 inch (3 mm)] shank with a minimum 3 / 8 -inch- diameter (9.5 mm) head, complying with ASTM F1667, of a length to penetrate through the roofing materials and not less than 3 / 4 inch (19.1 mm) into the roof sheathing. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. The installation of thermoset single-ply roofing shall comply with the provisions of this section. Brace gable end walls taller than 48. inches in height to resist wind forces by installing a framing assembly at each gable wall stud. 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. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. Where the existing roof covering is wood shake, slate, clay, cement or asbestos-cement tile. 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. Install 7/16 in.-structural sheathing (OSB or plywood) on the vertical face of the gable end wall. For SI: 1 foot = 304.8 mm; 1 mile per hour = 0.447 m/s. Slate shingles shall be secured to the roof with two fasteners per slate. the 2018 International Residential Code (IRC) simplified wall bracing requirements. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. 2018 irc roof sheathing requirements. Same as Maximum Ultimate Design Wind Speed, Apply in accordance with the manufacturer's, Asphalt-saturated and asphalt-coated organic felt base sheet, Asphalt-saturated organic felt (perforated), Coal-tar primer used in roofing, dampproofing and waterproofing, ASTM B 370 minimum 16 oz/sq ft and 12 oz/sq ft high-yield copper for metal-sheet, ASTM B 209, 0.024 minimum thickness for roll-formed panels and 0.019-inch minimum, 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-, As an alternative, self-adhering polymer-modified bitumen, The standard calculations contained in ASTM D 7158 assume Exposure Category B or C and. Glenn Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. Slate shingles shall be installed in accordance with this chapter and the manufacturer's instructions. 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. Asphalt shingles shall meet the classification requirements of Table 905.2.4.1 for the appropriate ultimate design wind speed. 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. 3. Asphalt shingles shall be used only on roof. The installation of built-up roofs shall comply with the provisions of this section. 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. SECTION R804 COLD-FORMED STEEL ROOF FRAMING. 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. 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. The second R-value applies when more than half of the insulation is on the interior of the mass wall. 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 SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. 201 0 obj <> endobj References are to the 2018 International Residential Code (sections are designated as R). Asphalt shingles shall be tested in accordance with ASTM D7158. R905.2.1 Sheathing requirements. 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. Clay or Concrete Tile Roofs | Building America Solution Center - PNNL 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. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. For SI: 1 inch = 25.4 mm, 1 mile per hour = 0.447 m/s. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. PDF Indiana Register FIRE PREVENTION AND BUILDING SAFETY COMMISSION CEB For SI: 1 inch = 25.4 mm, 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. conditions about your roof that may limit your product choices or affect the cost of your roofing job. For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s. 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. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. Slate shingles shall be secured to the roof with two fasteners per slate. Minimum headlap for slate shingles shall be in accordance with Table 905.6.5. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. Flashing against a vertical front wall, as well as soil. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. 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. 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. Liquid-applied roofing 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. 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. 2018 International Residential Code (Irc) | Icc Digital Codes Exception: Detached accessory structures not containing conditioned floor area. Self-adhering polymer-modified bitumen. Allowable spans for lumber sheathing shall conform to IRC Table R803.1. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Where required, an ice barrier shall comply with Section 905.1.2. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Slate shingles shall comply with ASTM C406. For open valleys (valley lining exposed) lined with metal, the valley lining shall be not less than 24 inches (610 mm) wide and of any of the corrosion-resistant metals in Table R905.2.8.2. For 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. Slate shingles shall comply with ASTM C 406. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. A new Footnote j Chapter 9: Roof Assemblies, Residential Code 2018 of Nevada | UpCodes Wood shingles shall be laid with a side lap not less than 1, Roof flashing shall be not less than No. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. Roof valley flashing shall be not less than No. over the entire roof and over the 4-inchwide (102 mm) membrane strips and. Asphalt shingle packaging shall bear a. Sprayed polyurethane foam roofs shall have a design. The 2020 Minnesota Residential Code adopts the 2018 International Residential Code (IRC). 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 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 be installed in accordance with this chapter and the manufacturer's instructions. Chapter 9: Roof Assemblies, Residential Code 2018 of Maryland | UpCodes Sprayed polyurethane foam roofs shall have a design. are not required for roofs sheathed with lumber having a nominal width of less than 3 feet Galvanized fasteners shall be used for steel roofs. Section R901 General R901.1 Scope The provisions of this chapter shall govern the design, materials, construction and quality of roof assemblies. CHAPTER 8 ROOF-CEILING CONSTRUCTION. Galvanized fasteners shall be used for steel roofs. 2018 IRC. Valley flashing shall be not less than 15 inches (381 mm) wide. Valley flashing shall be not less than 15 inches (381 mm) wide. 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. 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. 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. The installation of liquid-applied roofing shall comply with the provisions of this section. Interlayment shall comply with ASTM D226, Type I. Adjacent segments of drip edge shall be overlapped not less than 2 inches (51 mm). Valley linings shall be installed in accordance with the manufacturer's instructions before applying shingles. endstream endobj startxref Section R803 Roof Sheathing R803.2 Wood Structural Panel Sheathing (Roof Online Note: This subsection covers plywood and OSB sheathing. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. 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 installation of slate shingles shall comply with the provisions of this section. PDF 2018 IRC Re-Roof Guide - Town of Severance Sections of flashing shall have an end lap of not less than 4 inches (102 mm). Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. %%EOF 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. 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. Asphalt shingle packaging shall bear a. 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. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. Wood shakes shall comply with the requirements of Table R905.8.5. 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. Roof penetrations shall be flashed and sealed in accordance with this chapter. The installation of slate shingles shall comply with the provisions of this section. Liquid-applied roofing shall be installed in accordance with this chapter and the. Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Asphalt shingles shall comply with ASTM D3462. 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. A base sheet that complies with the requirements of. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. 12 oz/sq ft for preformed metal shingle systems. roof sheathing, skylights, change of roof pitch, addition or relocation of mechanical units, or installation of heavier materials than were previously installed. Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper roofs. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. 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. Wood shakes shall comply with the requirements of Table R905.8.5. Real wood. 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. (R803.1) Hold-Downs and Hardware R803.1 is for lumber sheathing. 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. Minimum headlap for slate shingles shall be in accordance with Table R905.6.5. In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in. 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.
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