Roof Guide: Codes & Standards - Insurance Institute for Business & Home Roof decking or roof sheathing is the framing of your roof and what your roofing materials are installed on. Be aware, some roofing contractors lower their prices by skipping this to undercut the competition. For SI: 1 inch = 25.4 mm, 1 pound = 0.454 kg. This would commonly be the building department or building inspection department of the village, town, city or county in which the building is located. This code can only be applied when your old roof is torn off, and youre starting from a clean deck. Tiny home small. 8 Roofing Codes in Nashville, Tennessee You Need to Know - LinkedIn PDF Knox County Code Administration & Inspection Residential Deck Code Handout Properly installed drip edge ensures water wont get behind your gutters and rot out your fascia board or your roofs decking. Drip edge shall extend a minimum of a of an inch below roof decking and extend up a minimum of 2 inches. As ice damming becomes more common in Tennessee, codes are now in place to prevent roof leaks when we have a snow or ice storm. of The slope (or pitch) of your roof is the steepness calculated by the number of inches or feet it rises vertically for every 12 inches or feet it extends horizontally. As long as the roofing materials (roof flashing, roof vents, etc.) The roof snow load is defined as the weight of snow on the roof surface. This program covers areas of the state that do not have building codes enforced by the local government or do not enforce building codes that are current within seven years of the latest . Valley flashing shall be a minimum of 15 inches (381 mm) wide. For some roof assemblies in cold climates, ice may form along eaves, which may impede the drainage of meltwater from higher up on the roof surface. Select Accept to consent or Reject to decline non-essential cookies for this use. Reviewed Date: 11/17/2022. Building codes generally divide roofs into three zones: perimeter, corner, and field (i.e., areas away from discontinuities). Residential Code, 2018 (IRC 2018) Change Code Code Compare Part I Administrative Chapter 1 Scope and Administration Part II Definitions Chapter 2 Definitions Part III Building Planning and Construction Chapter 3 Building Planning Chapter 4 Foundations Chapter 5 Floors Chapter 6 Wall Construction Chapter 7 Wall Covering Drip edge is a metal flashing that is installed on the rakes and eaves of the roof to protect fascia and other roofing components from flowing water. The building code designates the type of construction based on size and occupancy (i.e., assembly, residential multi-family, business) and establishes minimum fire-resistance classification of a roof assembly. The cricket or saddle coverings also shall be sheet metal or of the same roofing material as the roofing covering. The codes currently adopted by the Tennessee State Fire Marshal's Office are: International Building Code (IBC), 2012 edition, published by the International Code Council (ICC), except for: Chapter 11 Accessibility; and, Chapter 34, Section 3411 Accessibility for Existing Buildings; Once the model building codes have been updated, the updates will begin to make their way into locally adopted codes and standards. Keep in mind, this is based on the 2018 International Residential Code. For content printing within Digital Codes Premium, please utilize the section level printing controls available within the Premium toolbar for each section. Building Codes in Tennessee. Asphalt shingles shall comply with ASTM D 225 or D 3462. By the end of this article, youll know 8 roofing codes in Nashville, Tennessee, homeowners need to know before their roof replacement. When your roof is replaced, certain roofing materials might not need to be replaced. For More Information: Read reviews and get estimates for roof repairs and replacements. Steep-slope roofs have the greatest pressures in the perimeter and corners, as well as the roof peak and eaves. You just learned 8 roofing codes you need to know in Nashville, Tennessee. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1(1) for the appropriate maximum, 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. Under the IRC, to maintain continuity of townhouse fire separation walls are generally required to extend above the roof deck except in certain conditions. Roofing Industry Knowledge. If they do not have code coverage, there needs to be an agreement in place for how any items will be handled that are not covered by insurance. When required, testing is in accordance with ASTM E108 or UL 790. Every shingle manufacturer has specific installation instructions your roofing contractor needs to follow to ensure your roof isproperly installed. For open valleys, where the lining is visible, it . Ensuring that a roofing system is properly installed is not only a matter of building code, it will also have an effect on the validity of the manufacturers warranty. Similarly, the building code that was in place at the time of the original construction or when the roof cover was last replaced should be known in order to verify compliance of the roof cover. When two roofing slopes meet in a downward angle, it creates a roof valley where water will collect and flow. Roof valley flashing shall not be less than No. Users should contact the authority having jurisdiction if there are questions. Compliance with test standards is verified by independent testing laboratories, and confirmation of compliance is typically noted on package labeling or direct product labeling. 62-6-603. The IRC Section R902.1 requires Class A, B or C fire-resistant roofing only in jurisdictions designated by law, or where the edge of the roof is less than 3-feet from the property line. Requirements for Building Design - Tennessee State Government Building Official Email. Installers should follow code requirements, energy standards, and manufacturers guidelines for the use of insulation in an approved roofing assembly, as they may differ across industries and product types. C&C loads are used to design roof sheathing elements and their attachment to the roof framing as well as secondary members such as purlins, rafters, and truss top-chord members between panel points. Whether you need repairs or a roof replacement, you can count on us to do things the right way. Since 1990, the team at Bill Ragan Roofing has proudly helped homeowners in Nashville and surrounding areas with their roofing needs. Agent means any officer, director, owner, employee, contractor or any other person authorized to act on behalf of a residential roofing services provider; Contract means a contract in this state between a person and a residential roofing services provider for the provision of goods or services related to the repair or replacement of a roof system the costs of which the residential roofing services provider represents are to be paid, or are likely to be paid, in whole or in part, from the proceeds of a property and casualty insurance policy; Emergency repairs means goods or services provided for the purpose of making urgent and necessary repairs to the roof system of residential real estate if, without such repairs, damage to the residential real estate would occur; Residential real estate means a new or existing building constructed for habitation by one to four (1-4) families, and includes the building's garage, even if the garage is detached from such building; Means a person in the business of contracting or offering to contract with owners of residential real estate to repair or replace roof systems, or the agent of such person; and, Does not mean a person engaged in the demolition of a structure or cleanup of construction waste and debris that contains roofing material; and. Slate shingles shall be secured to the roof with two fasteners per slate. Beginning with the 1995 edition of ASCE 7, the design wind speed basis was changed to a 3-second gust wind speed, which is different than the 1-minute average speed used in the Saffir-Simpson Scale for hurricanes. Please report broken links or other issues to Simon Kellogg (skellogg@ibhs.org). You can update your choices at any time in your settings. 4 Square Roofing Phone: (615) 582-1639. The use of thermal insulation in roofs or roof assemblies must be evaluated in conjunction with the type of roof system. Slate shingles shall comply with ASTM C 406. conditioned) attic spaces are permitted. A roof valley is crucial to keep water flowing down your roof properly. If you are a roofing contractor in Tennessee and you need help with supplementing, please visit our Roof Supplementing page for more information or schedule a time below to speak with our Founder/CEO. Roofing material manufacturers create full systems that are designed to be installed together and not necessarily mixed and matched with other product lines. Sections of flashing shall have an end lap of not less than 4 inches (102 mm). . Refer to the jurisdiction having authority to determine if snow retention systems are required. A roof replacement is the process where all existing layers of roof covering are completely removed down to the roof deck before a new roof covering is installed. Code requirements change periodically as building codes are updated. Adopting Building Codes and Amendments By Reference. The Building and Codes Department ensures compliance with all applicable building codes adopted by the County's Governing Body. Please refer to the ventilation manufacturer for product installation and limitations. '18 IFC- 2018 International Fire Code. Bill Ragan When investing in a new roof in Nashville, you're expecting it to be installed correctly. The bottom layer shall be 18 inches (457 mm) and the top layer a minimum of 36 inches (914 mm) wide. The ATC snow load website provides users with location-specific ground snow loads: snowload.atcouncil.org. Underlayment must be installed over the drip edge along the eaves and under the underlayment on gables. Without a proper roof cricket, water will collect behind a chimney on a roofing surface that isnt meant to have standing water. It is one of the most important items to be installed on the roof. See the FEMA Snow Load Safety Guide. For open valleys, where the lining is visible, it should be metal or a mineral surfaced roll roofing. TN building codes | Homesteading Forum Where the roof, In areas where there has been a history of ice forming along the eaves causing a backup of water as designated in Table R301.2(1), an ice barrier that consists of a least two layers of. For low-slope roofs, wind pressures typically have the greatest magnitude at the roof perimeter and corners. 8 Roofing Codes in Nashville, Tennessee You Need to Know, Checklist of Questions to Ask a Roofing Contractor. PDF ~tate of \!rennessee - Tennessee State Government - TN.gov Building Codes in Tennessee | MTAS Every shingle manufacturer has specific installation instructions your roofing contractor needs to follow to ensure your roof is properly installed. Payments and deposits -- Emergency repairs. This code ensures water coming down your roof has a way to get around a wide chimney or roof penetration. When required for steep slope roofs, Section 1507 in the IBC and Section R905.1.2 of the IRC specify the use of an ice barrier that consists of either two layers of underlayment cemented together, or a self-adhering polymer modified bitumen sheet at eaves and valleys. 1.3 Wind Users of this manual are strongly urged to follow accepted safety practices, refer to applicable local building codes and standards, and relevant manufacturers instructions for appropriate technical requirements, and to work with a qualified professional in order to operationalize the information contained herein.