For a good guide to the entire IRC, consider getting DEWALT 2018 Residential Construction Codes: Complete Handbook. A drip edge shall be provided at eaves and gables of shingle roofs. Link goes to the book’s Amazon page. Fellow Roofers, I have a job with a few hundred squares of old 3/8 inch plywood decking on 24inch centers. CF203-08 Performing a Proper Fire Inspection (7) CF250-00 NFPA 20 - Pumps for Fire Protection ; CF203-04 Fire Inspector I (70) CF203-05 … R903.2 Flashing. An approved underlayment for the applicable roof covering for maximum ultimate design wind speeds, V ult, less than 140 miles per hour shall be applied over the entire roof over the 4-inch-wide (102 mm) membrane … Valley flashing shall be not less than 15 inches (381 mm) wide. Get home building tips, offers, and expert advice in your inbox, All of this is great information and tells me a lot especially that my deck is out of code and considering that I want to redo my deck, I’ll have to get it up to specs. Here’s a list of the 2015 deck code additions: See other Build A Deck blog posts that cover each of these new deck code provisions in more detail. Spray-applied polyurethane foam insulation shall comply with ASTM C1029, Type III or IV or ASTM D7425. I have a flat roof and my contractor built a cedar board floating deck. The bottom layer shall be 18 inches (457 mm) and the top layer not less than 36 inches (914 mm) wide. You may be looking for the Quick Roofing Guide to the International Building Code. Roofing/Construction Questions. Fire resistance shall run from foundation to underneath the roof sheathing. Thermoset single-ply membrane roofs shall have a design. From a conversation with "Dirty Jobs" Mike Rowe, through a home-buying market update, to buyer preferences for 2021 and a look at a few of the latest in-home office, closet, and kitchen features, here's what I saw on the last day of IBSx. Code calculators automatically generate a detailed list of requirements. Always check with your local building inspector’s office to be certain which version of the building code is in effect in your area. 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 International Residential Code (IRC) and the Residential Edition of the Florida Building Code (FBC) both refer to Table R503.2.1.1(1) of the APA Engineered Wood Construction Guide for specs. - M.K. Based on the 2015 International Residential Code Where applicable, provisions and details contained in this document are based on the International Residential Code (IRC) [bracketed text references applicable sections of the IRC]. Today we are going to delve in the final “building” (Walls, Floors, Roofing & Finishes) sections of the code, in particular the biggest changes we see between the 2009 IRC and the popular 2003 & 2006 IRC. Start your subscription today and save up to 52%. The installation of built-up roofs shall comply with the provisions of this section. And it could put you in a bit of a bind. Quickly locate sections across your jurisdiction. P. premium_feature_icon_html P Premium ... INTERLOCKING CLAY OR CONCRETE ROOF TILE WITH PROJECTING ANCHOR LUGS d, e (Installations on spaced/solid sheathing with battens or spaced sheathing) Maximum Nominal Design Wind Speed, V asd f (mph) Mean roof height (feet) Roof slope < 5:12: Roof slope 5:12 < 12:12: Roof … NEW 4 … Roof replacements shall comply with Section C402.1.3, C402.1.4, C402.1.5 or C407 where the existing roof assembly is part of the building thermal envelope and contains insulation entirely above the roof deck. Code Calculators automatically generates a detailed list of requirements. As for the ledger, I’m generally of the idea that it’s hard to go too big, but could easily be too small. These inputs help surface the applicable codes and requirements. Most of the new subsections will make prescriptive deck construction a lot simpler. Modified bitumen membrane roofs shall have a design. Submit this form or email us at, Please contact support@up.codes. Needless to say, it’s pretty scary walking on these roofs. be designed and installed in accordance with this code and the approved manufacturer’s installation instructions such that the roof assembly shall serve to protect the building or structure. Yesterday we looked at the first four chapters of the 2009 IRC as it is part of Alabama’s new Building & Energy Code that goes into effect in less than a week. The 2015 International Residential Code (IRC) came out last June and the section specifically covering decks (R507) is now up to 6 1/2 pages – the 2012 IRC only has 2 1/2 pages. If you are seeking a roof replacement and would like have an inspection of your existing roof system, please do not hesitate to reach us at (316) 665-8482 or request a quote online. Highlight changes enacted by your local jurisdiction. Code Interpretation: Existing buildings requirements are sprinkled throughout the I-Codes; for roofing replacements it is necessary to … The installation of slate shingles shall comply with the provisions of this section. 2012 IRC Requirements for roof systems primarily are addressed in IRC’s Chapter 9—Roof Assemblies. 2015 Codes Significant Changes for Residential Inspections . See Section R302.2.2 of the IRC when roof decking needs to be replaced on townhouses. The City of St. Peters has adopted the 2015 International Residential Code (IRC) with amendments. the nails are all sunken under the wood surface. R905.2.8.5 Drip Edge. By Kirsten Land | July 7, 2015 | 1 . All feedback is helpful! CODES UPDATE Construction Codes & Industrialized Buildings 60 Executive Park South, N.E. famous. The 2015 edition of the International Residential Code brings the biggest update of deck codes the IRC has ever seen. Liquid-applied roofing shall have a design. When a roofing permit is needed for roof repairs: i. Class A, B or C roofing shall be installed in jurisdictions designated by law as requiring their use or where the edge of the roof is less than 3 feet (914 mm) from a lot line. One specific regulation in the new roofing code that would apply to many of the state’s homeowners is a new rule on decking. A reliable and up-to-date source of codes. NOTE: For all permits issued after September 12, 2016, the effective code is 2016 DBCA/2015 IBC/2015 IRC. Sprayed polyurethane foam roofs shall have a design. A liquid-applied protective coating that complies with, Foam plastic materials and installation shall comply with. 2015 IRC Building . Thermoplastic single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. For SI: 1 ounce per square foot = 0.305 kg/m. © 2021 The Taunton Press, Inc. All rights reserved. I can confidently say that I expect to be a life-long subscriber." ICC Digital Codes is the largest provider of model codes, custom codes and standards used worldwide to construct safe, sustainable, affordable and resilient structures. Roof penetrations shall be flashed and sealed in accordance with this chapter. the boards are tight fit(no space) and also tight fit to the edge wood board( the wood board sit on top is metal capping). R302.1(1) Exterior walls – Projections not allowed when less than 2 ft.for fire separation distance . Roof sheathing conforming to the provisions of Table 2304.7(1) , 2304.7 (2), 2304.7 (3) or 2304.7 (5) shall be … (Error code: 273), Part III — Building Planning and Construction, 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, 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. The code requirements for re-covering or replacing an existing roof covering can be found in IRC Section R908 Reroofing. Oklahoma recently adopted a new international roofing code, bringing new standards to roofs throughout the state. IBSx Roundtable: Behind the Siding—WRB, Drainable WRB, or Rainscreen? Additional calculations are required for conditions outside of these assumptions. 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. International Building Code 2015 (IBC 2015) SELECT CODE ANALYSIS. regulated by this code shall be designed and sealed by a Texas-registered engineer. Code interpretation: This section implies that asphalt shingles shall only be applied on roof slopes of 2:12 or more. Interlayment shall comply with ASTM D226, Type I. Drip edges shall extend a minimum of 0.25 inch (6.4 mm) below the roof sheathing and extend up the roof deck a minimum of 2 inches (51 mm). Class A, B or C roofing shall be installed in jurisdictions designated by law as requiring their use or where the edge of the roof is less than 3 feet (914 mm) from a lot line. also are contained in the 2012 International Fire Code (IFC). The installation of sprayed polyurethane foam roofing shall comply with the provisions of this section. Modified bitumen roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Self-adhering polymer modified bitumen. This is still an acceptable practice an approved by most building code. Adopted Building Codes : Code Adopted: Effective Date of Adoption: Modifications to the code : International Residential Code ®, 2015 Edition (IRC®, 2015) September 17, 2018. Foamed-in-place roof insulation shall be installed in accordance with this chapter and the manufacturer's instructions. Post to footing subsection with figures and a post size table. Asphalt shingles shall be fastened to solidly sheathed decks. Thermoplastic single-ply membrane roofs shall have a design. Copper, brass, bronze, copper alloy and 300-series stainless steel fasteners shall be used for copper roofs. Of course, these roofs weren’t properly ventilated and there are two layers up there. The installation of wood shakes shall comply with the provisions of this section. International Residential Code 2015 (IRC 2015) Part I — Administrative Chapter 1 Scope and Administration ... shall be applied over all joints in the roof decking. 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. Two-Family Dwellings Dwelling units in two-family dwellings must be separated from each other by wall and floor assemblies having a minimum 1- hour fire resistance rating. Galvanized fasteners shall be used for steel roofs. R902.1 Roofing Covering Materials Roofs shall be covered with materials as set forth in Sections R904 and R905. 304.1 Minimum Area for Habitable rooms - minimum 70sq ft. … Building Code Roof Decking question. H-clips are referred to in the APA Guide as “edge support." Get everyone on the same page and streamline code research. Roof valley flashing shall be not less than No. The following additional revisions also are included. Minimum headlap for slate shingles shall be in accordance with. For open valleys (valley lining exposed) lined with metal, the valley lining shall be not less than 24 inches (610 mm) wide and of any of the corrosion-resistant metals in. Most of the new subsections will make prescriptive deck construction a lot simpler. Lateral Load Connection – 2015 IRC, MiTek / USP LTS19-TZ lateral load connector, Simpson Strongtie DTT1Z lateral load connector, Deck joist span table – Table R507.5 and illustrations, Deck beam span table – Table R507.6 and illustrations, Big Takeaways From Presentations at the Builders' Show, A Modern California Home Wrapped in Rockwool Insulation for Energy Efficiency and Fire Resistance, Plus, get an extra 20% off with code GIFT20. the area is 16'x20' range and he made into 4 section, 16'x5' each. The IRC regulates work on one- and two-family dwellings and townhouses. I currently have 6x6’s and have not seen an 8x8 and have looked for another project. 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 2015 International Residential Code (IRC) came out last June and the section specifically covering decks (R507) is now up to 6 1/2 pages – the 2012 IRC only has 2 1/2 pages. 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. Slate shingles shall be fastened to solidly sheathed roofs. Permits and Scope of Work . But because a large number of reroofing and re-cover projects are undertaken without a licensed design professional’s involvement, it is … 2015 Prescriptive Table -no amendments-enclosed values are all improvements j. Log walls complying with ICC400 and with a minimum average wall thickness of 5” or greater sha ll be permitted in Zones 5-6 when overall window glazing is 0.31 U-factor or lower, minimum heati ng equipment efficiency is 90 AFUE (gas) or 84 AFUE (oil), and all other requirements met. International Residential Code®, 2015 Edition (IRC® 2015) as amended and modified in this subchapter to be the statewide minimum code for residential construction within the State of Oklahoma for one- and two-family dwellings and townhouses pursuant to 59 O.S. Valley linings of the following types shall be permitted: For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. You can … roof. The installation of mineral-surfaced roll roofing shall comply with this section. See differences between code years or jurisdictions. Leverage the full code compliance platform. Projects provide a dedicated space to collaborate on code research. A. IRC requires shingles to be fastened to solidly sheathed decks ('09, 905.2.1). Never miss important differences made to the code. Provisions that are not found in the IRC are … Rapidly and efficiently calculate project parameters. R902.1Roofing covering materials. 750 lb. Fifteen-inch (381 mm) or 18-inch (457 mm) wood shakes shall be permitted to be used for the final course at the. Roof application on slopes of 2:12 to 4:12 shall have two layers of underlayment applied in accordance with Section 1507.2.8, which states: “Apply a minimum 19-inch-wide (483 mm) strip of underlayment felt parallel with and starting at the eaves fastened … Unpack the code through illustrations and descriptions. Retrofit: 2009, 2012, 2015, and 2018 IRC. Capture and share institutional knowledge within your team and company. Thanks. Thermoset single-ply roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Drip edges shall extend not less than. Valley and flashing metal shall be a minimum uncoated thickness of 0.0179-inch (0.5 mm) zinc coated G90. The installation of asphalt shingles shall comply with the provisions of this section. Built-up roofs shall be installed in accordance with this chapter and the manufacturer's instructions. Wood shakes shall comply with the requirements of, 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. An approved. Have any of you guys found or developed any more specific criteria for when a roof deck should be replaced? CM201-03 - Introduction to the 2015 IRC Mechanical Codes (7) CM200-03 - Introduction to the 2015 International Mechanical Code (7) ... MP206-00 Significant Changes to the 2015 IRC Mech./Plumb., IMC, IPC, IFGC (14) Fire Codes. Roof Online Staff. Roof decks shall be covered with approved roof coverings secured to the building or structure in accor- dance with the provisions of this chapter. There is still significant research to be completed and discussions to be had to create a comprehensive deck code that can balance the needs of the decking industry with a minimum standard of construction. Valley linings shall be installed in accordance with the manufacturer's instructions before applying shingles. The installation of thermoplastic single-ply roofing shall comply with the provisions of this section. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. 2015 INTERNATIONAL RESIDENTIAL CODE' SECTION R903 WEATHER PROTECTION R903.1 General. Looking for a new roof or need a roof inspection in the Wichita KS Area? The primary roofing chapter in the IRC is “Chapter 9 - Roof Assemblies”. Section N1101.3 in 2012 IRC (Section N1107.1.1 in 2015 and 2018 IRC). The installation of modified bitumen roofing shall comply with the provisions of this section. * … Structural roof sheathing shall be designed in accordance with the general provisions of this code and the special provisions in this section. The roofing-related changes mentioned for IBC 2012 are incorporated into IRC 2012. Roof assemblies shall be designed and installed in accordance with this code and the approved manufacturer's instructions such that the roof … 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. It was quickly understood at the meeting that the work the decking industry needs to do in regard to codes won’t happen overnight, or even in the 2015 IRC. Save and quickly access sections most relevant to your project. C503.3.1 Roof replacement. The standard calculations contained in ASTM D 7158 assume Exposure Category B or C and building height of 60 feet or less. Click Here for modifications to the code adopted by reference. Roofing Code-Effective July 1, 2015 Building construction in Baltimore County shall comply with the 2015 editions of the International Building Code, the International Residential Code, the International Mechanical Code and the International Energy Code as well as local amendments, all as set forth in County Council Bill Number 40-15. Simple Way to Make Old Walls Straight and Plumb, Expert insights on techniques and principles. Decking is the layer of plywood between the shingles on your roof and … Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. The City made one amendment to IRC Chapter 9 Sections R905.2.8.2 … Where siding is provided on the vertical sidewall, the vertical leg of the flashing shall be continuous under the siding. 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. Rooftop-mounted photovoltaic systems shall be installed in accordance with the manufacturer's instructions. Section 503.2.1 (1) Table Footnote M. The minimum size roof decking shall be 7/16”. 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 used only on roof. 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. Liquid-applied roofing shall comply with ASTM C 836, C 957, D 1227, D 3468, D 6083, D 6694 or D 6947. Even if your local jusisdiction is following a previous version of the IRC, you may find some of the new code subsections useful for designing and building decks. It was … (b) The OUBCC through formal action expressly chose to adopt the IRC® 2015 as amended and … 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 such insulation is covered with an, Above-deck thermal insulation board shall comply with the standards in, Materials and methods of application used for re-covering or replacing an existing, The structural roof components shall be capable of supporting the, Flashings shall be reconstructed in accordance with. Notice: The one thing I still do not see, and maybe I overlooked it, is the size of the posts to support the beam and deck or anything regarding the size of the ledger board. Under the IRC, to maintain continuity of townhouse fire separation walls are generally required to extend above the roof deck except in certain conditions. Any thoughts about the post size. Surface critical code sections based on your project inputs. The installation of thermoset single-ply roofing shall comply with the provisions of this section. Highlight differences between any two building codes. 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. Prescriptive construction methods recommended meet or exceed minimum requirements of the IRC. Flashing and counterflashing shall be made with sheet metal. Roofs shall be covered with materials as set forth in Sections R904 and R905. Asphalt shingles shall comply with ASTM D3462. The designer and builder of the 2018 Fine Homebuilding House detail why they chose mineral-wool batts and high-density boards for all of their insulation needs. 1. Flashing for asphalt shingles shall comply with this section. 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. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. Generate a code sheet that integrates with your drawing set. Code calculators may not be available. For buildings under 25,000 square feet (square footage of the entire building as defined in the Green Buildings Ordinance): If repairs are more than 10% of the . Stainless steel fasteners are acceptable for metal roofs. Not much guidance there, and not a lot from manufacturers that I can find either. Each bundle of shakes shall be identified by a. Mineral-surfaced roll roofing shall not be applied on roof. Building codes provide specific guidance for reroofing projects by Mark S. Graham The code includes several exceptions to its requirements Specific building code requirements apply to roof system re-cover and replacement proj - ects. Adjacent pieces of drip edge shall be overlapped a minimum of 2 inches (51 mm). Base and cap flashing shall be installed in accordance with manufacturer's instructions. Don't miss relevant code. 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, 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 manufacturer's instructions for the deck material, shall be applied over all joints in the roof decking. Liquid-applied roofing shall be installed in accordance with this chapter and the manufacturer's instructions. View a consolidated view of relevant sections tailored to your project. Wood shingles shall be laid with a side lap not less than 1, Roof flashing shall be not less than No. Note: If doing a remodel on a two-family dwelling and the common wall between the two units is disturbed, your local jurisdiction may require a minimum of 5/8” Type X drywall to be applied to the common wall of the side being re… Leverage the most sophisticated code compliance platform. A deck beam span table for sizing beams based on the joist span and size of the beam. For the most common roof sheathing in our area, which is 1/2” nominal (7/16” actual) sheathing over trusses or rafters at … Even if your local jusisdiction is following a previous version of the IRC, you may find some of the new code … "I have learned so much thanks to the searchable articles on the FHB website. Mineral-surfaced roll roofing shall be fastened to solidly sheathed roofs. Additions, alterations, renovations, or repairs shall conform to the provisions of this code, without requiring the unaltered portions of the existing building to comply with this code. When replacing existing roofs, you will be allowed to replace with existing size decking if less than 50% of the decking is going to be replaced. Slate shingles shall comply with ASTM C 406. Adjacent segments of drip edge shall be overlapped not less than 2 inches (51 mm). Asphalt shingles shall be tested in accordance with ASTM D7158. International Building Code ®, 2015 Edition (IBC®, 2015) September 17, 2018 303.7 Interior Stairway Illumination – New exception: Switch is not required where remote, central or automatically controlled. R902.2 Fire-Retardant-Treated Shingles and Shakes, R902.3 Building-Integrated Photovoltaic Product, R902.4 Rooftop-Mounted Photovoltaic Panels and Modules, R903.4.1 Secondary (Emergency Overflow) Drains or Scuppers, R904.3 Material Specifications and Physical Characteristics, R905.2.4.1 Wind Resistance of Asphalt Shingles, R905.14 Sprayed Polyurethane Foam Roofing, R907 Rooftop-Mounted Photovoltaic Systems, R907.1 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 Provisions—Detached One- And Two-Family Dwellings, Multiple Single-Family Dwellings (Townhouses), Building-integrated photovoltaic products, Section R905 Requirements for Roof Coverings, Section R907 Rooftop-Mounted Photovoltaic Systems, Section R909 Rooftop-Mounted Photovoltaic Panel Systems. Projects allow you to save customized inputs about your building. Quick Roofing Guide to the International Residential Code. Your selected jurisdiction and code year has limited We asked Glenn Mathewson, a municipal building inspector and deck construction expert based in Colorado, to provide an overview of some of the biggest changes:. Print chapters, sections, and subsections for frequently used code. For help finding other parts of the IRC which deal with roofs, see our Quick Roofing Guide to the IRC. Asphalt shingles shall meet the classification requirements of, 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. The installation of liquid-applied roofing shall comply with the provisions of this section.