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Frequently Asked Questions <br />What is a "module type"? <br />The new UL1703 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 root 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 />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, IronRidge 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 IronRidge 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 />Installation Manuals Engineering Certification Letters <br />Visit our website for manuals that include UL We offer complete engineering resources <br />2703 Listing and Fire Rating Classification. and pre -stamped certification letters. <br />Go to IronRidge.com Go to IronRidge.com <br />