<div dir="auto">We have used Marutek molybdenum self tapping screws successfully for the past fifteen years in the Bahamas on metal truss roofs. On the East Coat, Manasquan Fasteners is our go-to fastener company.<div dir="auto"><br></div><div dir="auto">Daryl DeJoy</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Oct 30, 2023, 10:46 AM Jason Szumlanski via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">I agree that you can get impressive pull-out resistance from fasteners in plywood decking only. Two brands that publish pull-out values are OMG/Drill-Tec and Blazer. The #15 OMG screws are what we lean toward.</div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><br></div><div class="gmail_default" style="font-family:arial,helvetica,sans-serif">John Mansville also has a "High Load Fastener," but I think it's just a rebranded OMG. It comes in #14, #15, and even #21. They have published pull-out values that are really high. If you use a base plate with 4 fasteners with a 3x safety factor, you still get enormous pull-out values.</div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><br>Jason Szumlanski<div><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Principal Solar Designer | Florida Solar Design Group</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">NABCEP Certified Solar Professional (PVIP)</span><br style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px"><span style="color:rgb(51,51,51);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:13px">Florida State Certified Solar Contractor CVC56956</span></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Oct 26, 2023 at 2:06 PM August Goers via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi James,<div><br></div><div>I haven't had an application exactly as you describe with a tile roof / plywood deck over metal trusses. However, we have installed systems with metal roof support structures many times. Metal self-drilling screws have impressive pullouts, so you might be able to use them with any sort of mount that you want that works with the tiles you have on site. We have used ELCO screws in the past, and they are now part of the DeWalt brands, but here is an example:</div><div><br></div><div><a href="https://anchors.dewalt.com/anchors/products/screw-fasteners/" target="_blank" rel="noreferrer">https://anchors.dewalt.com/anchors/products/screw-fasteners/</a></div><div><br></div><div>and a Drill-Flex example:</div><div><br></div><div><a href="https://anchors.dewalt.com/anchors/_documents/uploads/DWANF_DrilFlex-TP-EN-rA_DDS1.pdf?1698346503" target="_blank" rel="noreferrer">https://anchors.dewalt.com/anchors/_documents/uploads/DWANF_DrilFlex-TP-EN-rA_DDS1.pdf?1698346503</a><br></div><div><br></div><div>Some of these fasteners are completely self drilling while others require a pilot hole.</div><div><br></div><div>Best,</div><div><br></div><div>August</div><div>Luminalt</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Oct 26, 2023 at 10:17 AM James Rudolph via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Mahalo for your response Sam. That makes me feel a little better.<div><br></div><div><br clear="all"><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><p style="font-family:"arial narrow",sans-serif;font-size:small;margin:0in 0in 0pt;background-image:initial;background-position:initial;background-repeat:initial"><span style="color:black;font-family:Cambria,serif">James
B. Rudolph</span><br></p><div><p class="MsoNormal" style="margin-bottom:0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-repeat:initial"><a name="m_-128512112492326979_m_4275660923320504451_m_-297465393509127727_SignatureSanitizer__GoBack" rel="noreferrer"></a></p><p class="MsoNormal" style="margin-bottom:0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-repeat:initial"><a name="m_-128512112492326979_m_4275660923320504451_m_-297465393509127727_SignatureSanitizer__GoBack" rel="noreferrer"></a></p>

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<div style="color:rgb(34,34,34)"><p class="MsoNormal" style="margin-bottom:0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-repeat:initial"><span style="font-family:Cambria,"serif";color:black">Independent Energy  </span><span style="font-family:Cambria,serif"></span></p><p class="MsoNormal" style="margin-bottom:0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-repeat:initial"><span style="color:rgb(0,0,0);font-family:Cambria,"serif"">C-39784 </span><span style="font-family:Cambria,"serif";color:black">ES #10816</span><span style="font-family:Cambria,serif"></span></p><p class="MsoNormal" style="margin-bottom:0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-repeat:initial"><span style="font-family:Cambria,"serif";color:black">NABCEP Certified PV Installer since 2009  #091209-155</span><span style="font-family:Cambria,serif"></span></p><p class="MsoNormal" style="margin-bottom:0.0001pt;line-height:normal;background-image:initial;background-position:initial;background-repeat:initial"><span style="font-family:Cambria,"serif";color:black">C. 808.313.9701</span><span style="font-family:Arial,sans-serif"></span></p><p class="MsoNormal"><span style="font-size:10pt;line-height:15.3333px"> </span></p></div><p class="MsoNormal"><span style="font-size:10pt;line-height:115%"><img src="https://docs.google.com/uc?export=download&id=1epSX66lZx4hdpGIh0mKHasN-i0LVxd85&revid=0B_lycoVrDLvaZE1weVZDQkxvM2x0NS9hamZ0SEJwSHUreC9VPQ" width="200" height="57" style="font-family:arial,sans-serif;color:rgb(0,0,0);font-size:medium"> </span></p></div><div><p style="font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:medium;margin:0in 0in 0pt;background-image:initial;background-position:initial;background-repeat:initial"><br></p></div></div><div><b><br></b></div><div><b><br></b></div><div><br><b><img alt="" width="0" height="0"><br></b><br></div></div></div></div></div></div></div></div></div></div></div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Oct 26, 2023 at 6:08 AM Sam Haraldson <<a href="mailto:sam@onsiteenergyinc.com" target="_blank" rel="noreferrer">sam@onsiteenergyinc.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">James,<div><br></div><div>I can think of one install I performed in 2017 that was a metal roof over metal purlins and we opted to through-bolt the entire array using one installer on a ladder inside and another on the roof.  We employed butyl mastic and large fender washers to attach a strut frame to the roof, and then we installed traditional L-feet and rails atop the strut.  I have zero experience working with tile so I don't know what your best methodology is there but I can attest that the through-bolting has held up well at that site the past five years.</div><div><br></div><div>Sincerely,</div><div>Sam Haraldson</div><br clear="all"><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div dir="ltr"><table cellpadding="0" cellspacing="0" style="font-family:Montserrat,Tahoma,sans-serif"><tbody><tr><td style="padding:0px 10px 0px 0px;vertical-align:top"><a href="https://www.google.com/url?q=https://onsiteenergyinc.com/&source=gmail-html&ust=1677085494759000&usg=AOvVaw2NN36GoM1sjnS4RdC8Svt-" rel="noreferrer noreferrer" style="border:none" target="_blank"><img src="https://i.postimg.cc/4xVVZ5jT/email-logo.png" alt="OnSite Energy" align="top" width="85" height="85" style="display:block"></a></td><td style="padding:0px;vertical-align:top"><table cellpadding="0" cellspacing="0"><tbody><tr><td colspan="2" style="padding:0px;vertical-align:bottom"><div color="#514ca0" style="padding:0px;color:rgb(81,76,160);font-size:11pt;font-weight:600;text-transform:uppercase">SAM HARALDSON <span style="font-size:8pt"> </span></div></td></tr><tr><td style="padding:0px 5px 0px 0px;vertical-align:bottom"><div color="#f9a145" style="padding:0px;color:rgb(249,161,69);font-size:9pt">Field Operations Director</div><div color="#514ca0" style="padding:0px;color:rgb(81,76,160);font-size:7pt;line-height:8pt">(406) 551-6135<br></div><div color="#514ca0" style="padding:0px;color:rgb(81,76,160);font-size:7pt;line-height:8pt">1515 N. Rouse Ave Bozeman, MT 59715</div><div color="#f9a145" style="padding:0px;color:rgb(249,161,69);font-size:7pt;line-height:9pt">Locally owned and operated since 2012</div></td><td style="padding:0px;vertical-align:bottom"><a href="https://www.google.com/url?q=https://onsiteenergyinc.com/bcorp&source=gmail-html&ust=1677085494759000&usg=AOvVaw0EluC1lXtz2KlRFag-htKe" rel="noreferrer noreferrer" style="border:none" target="_blank"><img src="https://i.postimg.cc/2y1LtFnM/email-bcorp.png" alt="B Corporation" width="22" height="33" align="bottom" hspace="2" vspace="2" style="display:block"></a></td></tr></tbody></table></td></tr></tbody></table></div></div></div></div></div>
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