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--></style><title>Re: [RE-wrenches] Mounting to SIPs,
revisited</title></head><body>
<div>Good Folks,</div>
<div><br></div>
<div>We did a job on Hunter panels - which are even worse than SIPS
because they have no lumber at the edges in the rafter orientation
like SIPS do. We used the large surface area mounts like
Ecofasten or Rapid Foot thare intended for metal roofs and instead
modified them to work with SIPS by changing the screw lengths and
patterns.</div>
<div><br></div>
<div>We used EcoFasten's products:
http://www.ecofastensolar.com/our-products/eco-fasten</div>
<div><br></div>
<div>You could also use UNIRACs rapid foot or equivalent. We
then customized the screw pattern such that every other screw was a
short or long one - the short ones going into the top sheathing and
the long ones going into the base sheathing (and/or rafters if you
need to) that the Hunter or SIP sits on.</div>
<div><br></div>
<div>We also then made sure to install long screws that go down into
the lower sheathing underneath the steel plate of the ecofasten - that
way the compression force is transferred below. And then more
long screws aboveand through the plate. You can even plan to hit
rafters below if you really plan ahead or do it during new
construction. You have to do the calcs on what the foam
can handle for psi and what uplift you need, etc. Bring in an
engineer on this.</div>
<div><br></div>
<div>We used 30"' centers - it's very expensive - but the idea is
to distribute the weight - kind of like an S5 approach. We had
an engineer do the calcs.</div>
<div><br></div>
<div>Best of luck!</div>
<div><br></div>
<div>Send $ to Haiti,</div>
<div><br></div>
<div>Jeff C.</div>
<div><br></div>
<div><br></div>
<div><br></div>
<div><br></div>
<blockquote type="cite" cite><font face="Bookman Old Style"
size="-1">Alan,</font></blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite><font face="Bookman Old Style"
size="-1"> Thanks for the
correction, I did in fact use the blue 'roof grip screws' with
neopreme washers provided by DP&W for use in OSB. I
better go chug more Ginko.</font></blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite><font face="Bookman Old Style"
size="-1">Bill</font></blockquote>
<blockquote type="cite" cite> </blockquote>
<blockquote type="cite" cite><font face="Bookman Old Style"
size="-1">Feather River Solar Electric<br>
4291 Nelson St.<br>
Taylorsville, CA 95983</font><br>
<blockquote>----- Original Message -----</blockquote>
<blockquote><b>From:</b> <a
href="mailto:allan@positiveenergysolar.com">Allan
Sindelar</a></blockquote>
<blockquote><b>To:</b> <a
href="mailto:re-wrenches@lists.re-wrenches.org">RE-wrenches</a></blockquote
>
<blockquote><b>Sent:</b> Sunday, January 17, 2010 10:46
PM</blockquote>
<blockquote><b>Subject:</b> Re: [RE-wrenches] Mounting to SIPs,
revisited</blockquote>
<blockquote><br></blockquote>
<blockquote>Just a note of caution here: "Tech" screws are
"Tek" screws, which are essentially a sheet metal thread
following a pilot drill point, on a hardened shank. They are intended
for mounting only into metal, not wood; the drill point isn't designed
to self-pilot into wood, and the drill section is too large in
diameter for wood.<br>
</blockquote>
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</blockquote>
<blockquote><b>Allan Sindelar</b><br>
<a
href="mailto:Allan@positiveenergysolar.com"
>Allan@positiveenergysolar.com</a><br>
NABCEP Certified Photovoltaic Installer<br>
EE98J Journeyman Electrician<br>
<b>Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
<a
href="http://www.positiveenergysolar.com/">www.positiveenergysolar.com</a
><br>
</blockquote>
<blockquote><br>
<br>
frenergy wrote:<br>
<blockquote type="cite" cite><font face="Bookman Old Style"
size="-1">Luke,</font></blockquote>
</blockquote>
<blockquote>
<blockquote> </blockquote>
<blockquote><font face="Bookman Old Style"
size="-1"> Direct Power and
Water has an optional mounting foot with five holes in it for
what I think Jeff Randall there referred to as 'Tech' screws to use in
the field between rafters. They are referred to as 'easy feet'.
It is designed to only attach into the roof decking, which
I'm pretty sure only required 1/2" OSB. He claims
the same or better pullout values as one lag per regular foot...there
may also be tighter spacing involved for the feet. The choices
are 1 1/2" or 3" long, has a self tapping
point so no pre-drill. Add some of the peel and stick mastic and
it's a fast install.</font></blockquote>
<blockquote> </blockquote>
<blockquote><font face="Bookman Old Style"
size="-1">Bill</font></blockquote>
<blockquote> </blockquote>
<blockquote><font face="Bookman Old Style" size="-1">Feather River
Solar Electric<br>
4291 Nelson St.<br>
Taylorsville, CA 95983</font></blockquote>
<blockquote> </blockquote>
<blockquote> <br>
<blockquote>----- Original Message -----</blockquote>
<blockquote><b>From:</b> <a href="mailto:sgsrenewables@gmail.com">Luke
Christy</a></blockquote>
<blockquote><b>To:</b> <a
href="mailto:re-wrenches@lists.re-wrenches.org"
>re-wrenches@lists.re-wrenches.org</a></blockquote>
<blockquote><b>Sent:</b> Sunday, January 17, 2010 8:24 PM</blockquote>
<blockquote><b>Subject:</b> [RE-wrenches] Mounting to SIPs,
revisited</blockquote>
<blockquote><br></blockquote>
<blockquote>Esteemed Wrenches,</blockquote>
<blockquote><br></blockquote>
<blockquote>We have a PV job in the works that will require mounting
racking to several roofs that consist of asphalt shingles laid over
SIP panels. The panels are standard 10" nominal thickness, with
9-1/4" of foam sandwiched by 1/2 OSB on each side. The rub is
that the underside of the panels will be the finished ceiling (with
5/8" of wood over the OSB).</blockquote>
<blockquote><br></blockquote>
<blockquote>I found a couple of threads in the archives discussing
mounting to SIPs, but most comments suggest through-bolting, and
that is not an attractive option in this case due to the finished
ceiling directly beneath.</blockquote>
<blockquote><br></blockquote>
<blockquote>The roofs in question are triangular in plan, and are
fairly small (~ 15' x 15' x 21')</blockquote>
<blockquote><br></blockquote>
<blockquote>Does anyone have experience with mounting directly to the
outer skin of a SIP panel?</blockquote>
<blockquote>Suggestions on the best way to approach this problem would
be appreciated.</blockquote>
<blockquote><br></blockquote>
<blockquote>Thanks in advance.</blockquote>
<blockquote><br></blockquote>
<blockquote><br>
<blockquote>
<blockquote>Luke Christy <br>
<br>
NABCEP Certified PV Installer: Certification #031409-25 (Luke
Christy)<br>
CoSEIA Certified PV Installer (Luke Christy)<br>
<br>
Solar Gain Services, LLC<br>
</blockquote>
<blockquote>Monte Vista, CO<br>
<a
href="mailto:SGSRenewables@Gmail.com">SGSRenewables@Gmail.com</a><br>
719.588.3044<br>
</blockquote>
</blockquote>
<blockquote><br></blockquote>
</blockquote>
<blockquote><br></blockquote>
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<x-sigsep><pre>--
</pre></x-sigsep>
<div>Jeff Clearwater<br>
Senior Design Engineer<br>
NABCEP (tm) Certified Solar PV Installer<br>
http://www.nabcep.org/</div>
<div>Village Power Design<br>
Solar Design Consultation for the Commercial Sector<br>
http://www.villagepower.com<br>
gosolar@villagepower.com<br>
<br>
Voice: 831-427-2799<br>
Fax: 413-825-0703<br>
245 Dufour St<br>
Santa Cruz, CA 95060<br>
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