Re: [RE-wrenches] Metal roof

Mon, 19 Oct 2020 10:27:14 -0700 

William,
More S5 standing seam attachments spreads the load onto more of the metal roof fasteners. In Oregon, the Structural Code, requires a standing seam attachment every 24" maximum. Since the common standing seam panels are 16" wide that means one attachment per seam -- a lot of attachments. Never had one come off even with 32" or 48" spacing, previous to current code, but I'm not in area that gets serious winds. 


S5 also makes attachments designed for other types of metal roofs, the 
mix of discussion of standing seam clamps and clamps design to attached 
to decking or to purlins has made this topic a bit difficult to follow.


Kent Osterberg
Blue Mountain Solar



On 10/19/2020 7:15 AM, William Miller wrote:

Friends:


I have figured that the best way to improve a standing seam 
installation is to add more S5 clips. Each seam has a finite number of 
fasteners into the sheeting. Therefore if you attach to more seams you 
attach to more fasteners into the deck.



We double the required number of clips at the perimeters and always 
stagger our clip pattern to attach to the maximum number of seams.


Does this logic make sense?

William Miller
www.millersolar.com


On Oct 19, 2020, at 5:16 AM, Will White <w...@solarenergy.org> wrote:



It's interesting that you experienced this as I've always told 
customers that the roof will come off the building with the array 
attached before the array comes off the metal roof. Sounds like the 
issue was with the attachment (or lack of) between the roof and the 
building.


Thanks,
Will

  --
*Will White*
Curriculum Developer


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On Sun, Oct 18, 2020 at 5:41 PM Jason Szumlanski 
<ja...@floridasolardesigngroup.com 
<mailto:ja...@floridasolardesigngroup.com>> wrote:


    I would add that S-5s are only as good as the roof. We saw a
    large system (not ours) that ripped the metal right off the roof
    during Hurricane Irma. It literally tore the meta. The panels,
    rails, and S-5s were still connected, sitting on the ground with
    chunks of metal roofing still attached to the S-5s. It was quite
    the mangled mess. We salvaged quite a bit, but the client built a
    ground rack after this.

    To be fair, this was a totally exposed beachfront home. I don't
    know what the spacing was on the clamps, either.


    On Sun, Oct 18, 2020 at 12:00 PM Jerry Shafer
    <jerrysgarag...@gmail.com <mailto:jerrysgarag...@gmail.com>> wrote:

        Wrenches
        I think what you said is totally true,"its only as good as
        the instalation" but here is where l differ, S-5's if
        installed correctly are no different than anything else
        installed on the roof.
        Jerry

        On Sun, Oct 18, 2020, 8:42 AM Dave Angelini Offgrid Solar
        <offgridso...@sti.net <mailto:offgridso...@sti.net>> wrote:

            The S5 is only as good as the installer. I have seen them
            come off with a string of panels on an insurance
            inspection I did.

            I billed them and made another note in my journal of why
            the only thing that should go on a metal roof is rainwater.


              


            *Dave Angelini Offgrid Solar "we go where powerlines
            don't" http://members.sti.net/offgridsolar/
            
<https://mailtrack.io/trace/link/1fbcd342a74271c0b7fc10aded3a5898216b29ff?url=http%3A%2F%2Fmembers.sti.net%2Foffgridsolar%2F&userId=1613865&signature=3165bd540eb26abc>
            e-mail offgridso...@sti.net <mailto:offgridso...@sti.net>
            text 209 813 0060*

            On Sat, 17 Oct 2020 21:37:07 -0400, Hilton Dier III
            <hiltond...@gmail.com <mailto:hiltond...@gmail.com>> wrote:


            I'm with Jerry Shafer on this one. S-5 clamps with rails
            work well without punching holes in the metal roof. If
            the roof is fastened well to beefy steel C channel it
            should be fine. The S-5 clamps themselves are stronger
            than the roofing.


            -- 
            Hilton Dier III

            Missisquoi River Hydro
            Renewable Energy Design


--
*Will White*
Curriculum Developer


e: w...@solarenergy.org <mailto:w...@solarenergy.org>
w: www.solarenergy.org <http://www.solarenergy.org/>
p: 802-272-3092

NABCEP Certified PV Installation Professional
# 093006-34

Do you envision a world powered by renewable energy? Be the change 
<http://solarenergy.org/donate>.

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