That's a really interesting failure mode. I would have thought the fasteners would have pulled out but I guess it makes sense that the metal ripped.
On Mon, Oct 19, 2020 at 3:19 PM Jason Szumlanski < ja...@floridasolardesigngroup.com> wrote: > I would say it was the metal itself. It was torn, so the clips that hold > the metal to the roof held, at least long enough for the metal to tear. It > is completely plausible that the point load was too high from too few > clamps. > > > > On Mon, Oct 19, 2020 at 8:16 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 >> >> >> e: w...@solarenergy.org >> w: www.solarenergy.org >> <https://mailtrack.io/trace/link/cdc1e1f93adb1352208990ede1e5191895d41435?url=http%3A%2F%2Fwww.solarenergy.org%2F&userId=1613865&signature=4501294306ef167a> >> >> p: 802-272-3092 >> >> NABCEP Certified PV Installation Professional >> # 093006-34 >> Do you envision a world powered by renewable energy? Be the change >> <https://mailtrack.io/trace/link/e6cb1800f9273a5c6a30eed1f13b034e522f98d4?url=http%3A%2F%2Fsolarenergy.org%2Fdonate&userId=1613865&signature=5258e2c2b91b9204> >> . >> >> >> >> On Sun, Oct 18, 2020 at 5:41 PM Jason Szumlanski < >> 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> >>> 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> 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/b0e6d73847b0d7d442ccbc699ac04d43af439126?url=http%3A%2F%2Fmembers.sti.net%2Foffgridsolar%2F&userId=1613865&signature=605126a0d342965b> >>>>> e-mail offgridso...@sti.net <offgridso...@sti.net> >>>>> text 209 813 0060* >>>>> >>>>> On Sat, 17 Oct 2020 21:37:07 -0400, Hilton Dier III < >>>>> 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 >>>>> >>>>> _______________________________________________ >>>>> List sponsored by Redwood Alliance >>>>> >>>>> List Address: RE-wrenches@lists.re-wrenches.org >>>>> >>>>> Change listserver email address & settings: >>>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>>> <https://mailtrack.io/trace/link/c8c10db58e3efe69734e322e5f0f31ec7e090028?url=http%3A%2F%2Flists.re-wrenches.org%2Foptions.cgi%2Fre-wrenches-re-wrenches.org&userId=1613865&signature=a6d485c377ef9948> >>>>> >>>>> There are two list archives for searching. 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