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�IRONRIDGE <br />Background <br />All roofing products are tested and <br />classified for their ability to resist fire. <br />Recently, these fire resistance standards <br />were expanded to include solar equipment <br />as part of the roof system. Specifically, this <br />requires the modules , mounting hardware <br />and roof covering to be tested together as <br />a system to ensure they achieve the same <br />fire rating as the original roof covering. <br />These new requirements are being adopted <br />throughout the country in 2016. <br />lronRidge Certification <br />lronRidge was the first company to <br />receive a Class A Fire Rating-the highest <br />possible rating-from lntertek Group pie., a <br />Nationally Recognized Testing Laboratory. <br />lronRidge Flush Mount and Tilt Mount <br />Systems were tested on sloped and flat <br />roofs in accordance with the new UL 1703 <br />& UL 2703 test standards. The testing <br />evaluated the system's ability to resist <br />flame spread, burning material and <br />structural damage to the roof. <br />Refer to the table below to determine the <br />requirements for achieving a Class A Fire <br />Rating on your next project. <br />System Roof Slope <br />Flush Mount Gii Any Slope <br />Tilt Mount <br />� <br />s 9.5 Degrees <br />Class A Fire Rating <br />Test Setup <br />Solar Modules <br />Solar modules are given a Type <br />classification based on their <br />materials and construction. <br />Mounting System <br />Mounting is tested as part of a <br />system that includes type-tested <br />modules and fire-rated roof covering. <br />Roof Covering <br />Roof covering products are given a <br />Fire Class Rating of A, B or C based <br />on their tested fire resistance. <br />Burning Brand Test <br />A burning wooden block is placed on module as a fan blows at 12 mph. <br />Flame cannot be seen on underside of roof within 90 minutes. <br />Spread of Flame Test <br />Flame at southern edge of roof is aimed up the roof as a fan blows at 12 <br />mph. The flame cannot spread 6 feet or more in 10 minutes. <br />Module Fire Rating* <br />Type 1, 2, & 3 Class A <br />Type 1, 2, & 3 Class A <br />"Class A rated PV systems can be installed on Class A, B, and C roofs. <br />Frequently Asked Questions <br />What is a "module type"? <br />The new UL 1703 standard introduces the concept of a <br />PV module type, based on 4 construction parameters <br />and 2 fire performance parameters. The purpose of <br />this classification is to certify mounting systems without <br />needing to test it with every module. <br />What roofing materials are covered? <br />All fire rated roofing materials are covered within this <br />certification including composition shingle, clay and <br />cement tile, metal, and membrane roofs. <br />What if I have a Class C roof, but the jurisdiction <br />now requires Class A or B? <br />Generally, older roofs will typically be "grandfathered <br />in", and will not require re-roofing. However, if 50% or <br />more of the roofing material is replaced for the solar <br />installation the code requirement will be enforced. <br />Where is the new fire rating requirement code listed? <br />2012 IBC: 1509.7.2 Fire classification. Rooftop <br />mounted photovoltaic systems shall have the same fire <br />classification as the roof assembly required by Section <br />1505. <br />Where is a Class A Fire Rating required? <br />The general requirement for roofing systems in the IBC <br />refers to a Class C fire rating. Class A or B is required for <br />areas such as Wildland Urban Interface areas (WUI) and <br />for very high fire severity areas. Many of these areas are <br />found throughout the western United States. California <br />has the most Class A and B roof fire rating requirements, <br />due to wild fire concerns. <br />Are standard mid clamps covered? <br />Mid clamps and end clamps are considered part of the <br />PV "system", and are covered in the certification. <br />--More Resources <br />Installation Manuals <br />Visit our website for manuals that include UL <br />2703 Listing and Fire Rating Classification. <br />Go to lronRidge.com <br />What attachments and flashings are deemed <br />compatible with Class A? <br />Attachments and their respective flashings are not <br />constituents of the rating at this time. All code-compliant <br />flashing methods are acceptable from a fire rating <br />standpoint. <br />What mounting height is acceptable? <br />UL fire testing was performed with a gap of 5", which is <br />considered worst case in the standard. Therefore, the <br />rating is applicable to any module to roof gap. <br />Am I required to install skirting to meet the fire <br />code? <br />No, Iron Ridge achieved a Class A fire rating without any <br />additional racking components. <br />What determines Fire Classification? <br />Fire Classification refers to a fire-resistance rating <br />system for roof covering materials based on their ability <br />to withstand fire exposure. <br />Class A -effective against severe fire exposure <br />Class B -effective against moderate fire exposure <br />Class C -effective against light fire exposure <br />What if the roof covering is not Class A rated? <br />The Iron Ridge Class A rating will not diminish the fire <br />rating of the roof, whether Class A, B, or C. <br />What tilts is the tilt mount system fire rated for? <br />The tilt mount system is rated for 1 degrees and up and <br />any roof to module gap, or mounting height. <br />Engineering Certification Letters <br />We offer complete engineering resources <br />and pre-stamped certification letters. <br />Go to lronRidge.com <br />© 2021 lronRidge, Inc. All rights reserved. Visit www.ironridge.com or call 1-800-227-9523 for more information. Version 1.21 <br />929 E Jonquil Rd - <br />2018144011/27/2023