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RE: SIP spec

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Good question and very timely!  There are no rules in this knife fight ....yet.  I like SIP's, but it is the wild west right now for standards.  And what can add a lot of complication are things like EIFS and other siding.  We structural engineers need to at least have an awareness of those other things that go bump in the night. 
APA is in the process of developing some standards.  They have a draft standard that is pretty good.  And pretty good now is a whole lot better than perfect in a year.
For your enlightenment:
You should make sure that they have a current ICC ES report.  It is important to note that not all SIP's are the same.  Manufacturers use different insulation, different skins, and different construction.  Aside from the structural issues there are off gassing issues, air quality, water ingress issues, mold, etc.  All the issues can be addressed with good backing from the manufacturer.  Attached is one manufacturer that has done some homework.
I would start off with a search of the ICC ES to determine which manufacturer has done the testing required to get listed.  You have to be careful on the search.  They will come up as sandwich panel, insulated panel, structural panel, etc.  There is no single search that will have all SIP's listed in the ICC ES.  But the ICC ES is a pretty good benchmark, but you have to look at each one to see if it fills all of your needs. 

Regards, Harold Sprague


Subject: SIP spec
Date: Fri, 19 Mar 2010 08:50:07 -0600
From: GordonGoodell(--nospam--at)
To: seaint(--nospam--at)

Has any of you written SIP specs to include in your GSN that youd be willing to share?


Gordon Goodell

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