[RE-wrenches] SIPS panel roofs

[Daniel Young]

I’ve used Pro Solar Rail in a similar way, it has a flat bottom and you can place it directly on the roof with butyl tape under the whole length, then fasten as often as you determine is needed. Rails run from peak to eave, and modules go in landscape. We mount the rails as close to the peak as practical, as it reduces the amount of water that can get to the rail from above, after that, it’s a continuous Butyl strip compressed by the rail, and the water would have to get in from the sides. You don’t splice rails either, just set the next rail ¼-1/2” down roof to allow for thermal expansion. No leaks so far.

 

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Daniel Young, 

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From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Chris Mason
Sent: Thursday, December 17, 2015 2:47 PM
To: dana at solarwork.com; RE-wrenches
Subject: Re: [RE-wrenches] SIPS panel roofs

 

I have no experience with SIP but,

There's a product I buy from Krannich that is excellent for difficult roofs where there is no point of attachment. It is called Xpress rail. The older product, which I don't think they sell anymore but I bought out everything they had, could be attached by pop rivet or self drilling metal screws. You drilled a hole every six or twelve inches and riveted it right onto metal roof sheeting. You back it with double sided EPDM tape. It is amazingly strong and probably as well attached as the roof itself.

http://www.everest-solarsystems.com/fileadmin/k2systems/PDF/public/Produktblatter/USA/XPressRail_US3_0813.pdf

 

 

On Wed, Dec 16, 2015 at 7:45 PM, 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? 

 

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Chris Mason

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