Alan,
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.
Bill
Feather River Solar Electric
4291 Nelson St.
Taylorsville, CA 95983
----- Original Message -----
From: Allan Sindelar
To: RE-wrenches
Sent: Sunday, January 17, 2010 10:46 PM
Subject: Re: [RE-wrenches] Mounting to SIPs, revisited
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.
<![endif]-->
Allan Sindelar
[email protected]
NABCEP Certified Photovoltaic Installer
EE98J Journeyman Electrician
Positive Energy, Inc.
3201 Calle Marie
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com
frenergy wrote:
Luke,
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.
Bill
Feather River Solar Electric
4291 Nelson St.
Taylorsville, CA 95983
----- Original Message -----
From: Luke Christy
To: [email protected]
Sent: Sunday, January 17, 2010 8:24 PM
Subject: [RE-wrenches] Mounting to SIPs, revisited
Esteemed Wrenches,
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).
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.
The roofs in question are triangular in plan, and are fairly small (~ 15'
x 15' x 21')
Does anyone have experience with mounting directly to the outer skin of a
SIP panel?
Suggestions on the best way to approach this problem would be
appreciated.
Thanks in advance.
Luke Christy
NABCEP Certified PV Installer™: Certification #031409-25 (Luke
Christy)
CoSEIA Certified PV Installer (Luke Christy)
Solar Gain Services, LLC
Monte Vista, CO
[email protected]
719.588.3044
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