<div dir="ltr"><br><div>Flash! It provides a better, longer-lasting seal, and its a Code requirement in most jurisdictions. From the IBC via the Quickmount PV website:</div><div><br></div><div><img src="cid:ii_14f03f29e0880e4d" alt="Inline image 1" width="562" height="322"><br></div><div class="gmail_extra"><br></div><div class="gmail_extra">If one chooses to attach a footing directly to the roof without an integrated flashing then an "insurance option" is to install an 8" step-flashing under the shingle course above the penetration. This works better for railed systems than railless since the whole footing assembly can be covered by the modules.</div><div class="gmail_extra"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><br><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><br><div><br></div><div><div><p class="MsoNormal"><span style="color:rgb(56,118,29)">For a brighter energy future,<br>
<br><br>Andrew Truitt <br>
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<span style="color:rgb(20,125,186)"><br></span>"Don't get me wrong: I love nuclear energy! It's just that I prefer fusion to fission. And it just so happens that there's an enormous fusion reactor safely banked a few million miles from us. It delivers more than we could ever use in just about 8 minutes. And it's wireless!"<br>
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<br></div><div class="gmail_extra"><br></div><div class="gmail_extra"><br></div><div class="gmail_extra"><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Aug 6, 2015 at 10:47 AM, Daniel Young <span dir="ltr"><<a href="mailto:dyoung@dovetailsolar.com" target="_blank">dyoung@dovetailsolar.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal">Writing the subject above, it seems like I’ve heard this question on the wrench list before, but I could not find it in my old email archives. Feel free to pint me back to the old discussion if it’s there.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">I’ve been using a flashing based roof attachment for 8+yrs now (quick mount or similar). Now we are looking at Rail-less systems (quick rack is a good example). There is also a non-flashed rail-less racking from roof-tech <a href="http://roof-tech.us/" target="_blank">http://roof-tech.us/</a> . I’ve always been of the opinion that simply crushing some sealant/gasket onto an asphalt shingle work fine at first (the test data from roof-tech is impressive), but would be an issue 10+yrs down the road (thermal expansion movement, freeze/thaw, etc). I can make a good waterproof seal at first by just slathering some butyl/silicone to an L-foot and cranking it down on the shingles, but that practice really disappeared 8+yrs ago.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Maybe consider this a Poll: (to flash, or not to flash) <u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">With Regards,<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Daniel Young, <u></u><u></u></p><p class="MsoNormal">NABCEP Certified PV Installation Professional<sup>TM</sup>: Cert #031508-90<u></u><u></u></p></div></div><br>_______________________________________________<br>
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