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That was exactly the failure I anticipated when using flashings.
Tearing up the shingle to shingle adhesive and pulling those nails
out is more disruptive than the actual attachment itself. I'm going
to flash on an upcoming job for legal/ insurance reasons, but not
because its better.<br>
I too have projects pushing 20 years, and we have never had a leak.<br>
<pre class="moz-signature" cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760</pre>
<div class="moz-cite-prefix">On 8/26/2015 10:20 AM, Kelly Keilwitz,
Whidbey Sun & Wind wrote:<br>
</div>
<blockquote
cite="mid:16AE9F77-6A21-45AA-9429-0C15F03910DF@whidbeysunwind.com"
type="cite">
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Hi All,
<div>In the early days with PV and SWH we didn’t use flashings for
most roofs (except tile). We used L-feet directly to the roofing
with butyl (comp) or EPDM (metal) and pre-filled our holes and
covered the attachments with good goop. We've never had a leak
reported from this practice. And, here in western Washington
State, it does get tested.</div>
<div>We changed methods about 10 years ago deciding it would be
good practice - both legally and professionally - to follow
roofing industry guidelines that prescribe (if you consider
attachments “penetrations”) the use of flashings. </div>
<div><br>
</div>
<div>This spring we had our first leak, from a 2-year old system,
on a 4:12 comp roof, with flashed L-feet. The leak occurred
through a roofing nail hole that our installers had pulled but
didn’t quite get covered up by the flashing or sealant. Even
though the hole was still “shingled” by 2 layers of overlapping
comp, the concentrated storm runoff from the module edges
overwhelmed the ability of the shingles to shed the water. We
fixed the problem, reroofing the section and fixing the damage
to the ceiling, but not to our reputation and pride.</div>
<div>Even though this issue was caused by a combination of
procedural error and specific geometry, it’s easy to imagine
this could happen again. Installers moving fast on roofs and not
being able to see exactly where those nails they are pulling are
coming from. And, when it’s cold out older comp shingles can
crack when trying to get the nails out.</div>
<div><br>
</div>
<div>If “best practices” for our industry could be
established/recognized that prescribed our former methodology
with L-feet, I would be happy to return to it (customers would
also get lower costs). As of now, however, “best practices” for
us mean following the roofing industry standards.</div>
<div><br>
</div>
<div>-Kelly</div>
<div> </div>
<div>
<div apple-content-edited="true"><span class="Apple-style-span"
style="border-collapse: separate; border-spacing: 0px;"><font
class="Apple-style-span" size="2">Kelly Keilwitz, P.E. <br>
Principal<br>
Whidbey Sun & Wind<br>
Renewable Energy Systems<br>
NABCEP PV Installation Professional<br>
WA Electrical Administrator<br>
<a moz-do-not-send="true"
href="mailto:kelly@whidbeysunwind.com">kelly@whidbeysunwind.com</a><br>
PH & FAX: 360.678.7131<br>
</font><br>
<br>
</span>
</div>
<br>
<div>
<div>On Aug 26, 2015, at 7:44, jay <<a
moz-do-not-send="true" href="mailto:jay.peltz@gmail.com">jay.peltz@gmail.com</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">Didn’t know there was a pole.<br>
I”m on the flash side. <br>
<br>
Question for those who don’t.<br>
How would your insurance claim work if you didn’t flash?<br>
<br>
jay<br>
<br>
peltz power<br>
<br>
<br>
<blockquote type="cite">On Aug 25, 2015, at 9:59 PM, Jason
Andrade <<a moz-do-not-send="true"
href="mailto:jason@westcoastsustainables.com">jason@westcoastsustainables.com</a>>
wrote:<br>
<br>
I wouldn't install a comp roof system without the
flashings myself, I am in<br>
Northern California and the extreme weather both heat and
cold are murder on<br>
roofing.<br>
<br>
Jason<br>
<br>
West Coast Sustainables<br>
Jason Andrade<br>
C-46# 974647<br>
(530) 410-4745 Cell<br>
(530) 241-7498 Office<br>
(530) 348-5301 Fax<br>
<a moz-do-not-send="true"
href="mailto:Jason@westcoastsustainables.com">Jason@westcoastsustainables.com</a><br>
</blockquote>
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</blockquote>
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