[RE-wrenches] Mounting to SIPs, revisited

[frenergy]

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: re-wrenches at lists.re-wrenches.org 
  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
       SGSRenewables at Gmail.com
       719.588.3044













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