[RE-wrenches] SIPS panel roofs

[Luke Christy]

Hi Dana,
We had to do this very thing for a project some years ago. I searched extensively for a product that could allow us to attach directly to the top skin of a SIP panel without having to use blocking or through fasteners. We ended up using an attachment made by EcoFasten Solar. It uses a steel plate with a number of screws (8, I think) that collectively  create the required pullout resistance. They had engineering to support using the product on SIPs, which was awesome. 

A quick look at their website shows that they still make a SIP-specific attachment. Their flashing isn't ideal for Pro-panel, but I would think that you could make it work.

-Luke


> On Dec 16, 2015, at 16:45, Dana <dana at solarwork.com> wrote:
> 
> SIP ROOF INSTALLATION
>  
> I was asked to install on a SIP panel roof today. 5/8” OSB over 6” of foam on a 9:12 roof pitch at 9800’ elevation with a Pro panel metal roof skin.  There is a finished ceiling underneath the lower side of the SIP roof panel.
> I explained that it was not ideal due to the lack of good attachment etc. They were not concerned and said “you’ll make it work!”
>  
> I have done SIP panels in new construction and we could install backing from underneath and refoam.
> My first thought was to do 2-2.5 times the normal L feet.
> One thought was to use expanding moly-bolts.
>  
> Has anyone have experience attaching to SIP roof that was not prepared for an array?
>  
> ----------------------------------------------------------------------------
> Dana Orzel
> Great Solar Works, Inc -  NABCEP # 051112-136
> E - dana at solarwork.com  - Web - solarwork.com
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