<div dir="ltr"><div class="gmail_extra">If we are talking code, we should also point out how people are "getting away" without using flashings and why AHJs are not requiring them. What I have seen is that a fastener is not considered a "penetration." The argument used frequently is that the thousands of screws that attach an exposed fastener metal roof are not "flashed." The argument goes that the codes sections cited be Andrew are intended for large openings like roof vents and plumbing vents. If the screw occupies the space of the "penetration" and is further sealed with sealant or a gasket, there is no flashing required. You could extend this argument to shingle nails that go through the "roof plane" depending on how you define it.<br></div><div class="gmail_extra"><br></div><div class="gmail_extra">Don't kill the messenger - I'm just pointing out the logic/argument made against the requirement for flashings.</div><div class="gmail_extra"><br></div><div class="gmail_extra">I'll reiterate that my vote is to flash!</div><div class="gmail_extra"><br></div><div class="gmail_extra">Jason</div><div class="gmail_extra"><br>
<br><div class="gmail_quote">On Thu, Aug 6, 2015 at 1:04 PM, Andrew Truitt <span dir="ltr"><<a href="mailto:atruitt@gmail.com" target="_blank">atruitt@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><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>
</span></p>
</div><div><p class="MsoNormal"><span style="color:rgb(56,118,29)">Principal<br>Truitt Renewable Energy </span><span style="color:rgb(56,118,29)">Consulting, LLC</span></p></div><div><p class="MsoNormal"><span style="color:rgb(56,118,29)"><a href="tel:%28202%29%20486-7507" value="+12024867507" target="_blank">(202) 486-7507</a></span></p>
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<p class="MsoNormal"><span style="color:rgb(56,118,29)"><span>NABCEP</span> Certified PV Installation Professional ID: 032407-66</span></p><p class="MsoNormal"><span style="color:rgb(56,118,29)">Colorado Journeyman Electrician License No.: 600132</span></p></div></div></div></div></div></div></div></div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><p><br></p></div>
<br>
<br></div></div></div></div></div>
</div></div></div></div><div class="gmail_extra"><br></div><div class="gmail_extra"><br></div><div class="gmail_extra"><br><div class="gmail_quote"><div><div class="h5">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></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5"><div lang="EN-US" link="blue" vlink="purple"><div><p class="MsoNormal">Writing the subject above, it seems like I\u2019ve 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\u2019s there.<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">I\u2019ve 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\u2019ve 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></div></div></blockquote></div></div></div><br></blockquote></div></div></div>