We've always had ours made by a local shop to fit the roof. I can't say I've ever looked for an "off to shelf" solution.
Jesse Sent from my iPhone On Sep 11, 2013, at 9:13 AM, "Garrison Riegel" <garri...@solarserviceinc.com> wrote: > Schletter makes their 2” diameter aluminum stanchions in a variety of sizes, > up to 12”. We have done a number of jobs on the exact roof you are > describing using the attached version of the Schletter Windsafe. Their > stanchion has a pretty small base with 4 holes for attachment, like the > UniRac, so we always lag them into structural framing or blocking. > > Ironridge also has a nice attached tilt up solution for a single module rows, > but last time I checked the lead time on their 12” standoff was 6 weeks. > > When we need heights over 12” we have a local fab shop make them for us. > > Windsafe spec: > http://www.schletter.us/support/Windsafe_Product_Sheet.pdf > > Stanchions on page 9: > http://www.schletter.us/support/I400003%20Component_OV.pdf > > Best > > Garrison Riegel > Project Manager | Solar Service Inc > [p] 847-677-0950 | garri...@solarserviceinc.com > > NABCEP Certified PV Installation Professional™ > > From: re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason > Szumlanski > Sent: Tuesday, September 10, 2013 4:03 PM > To: RE-wrenches > Subject: Re: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation > > I'm wondering if multiple 7" Unirac 2-piece Stand-Offs cylinders threaded > together with all-thread would be a structurally sound solution. I'll pass > that option by the engineers... > > Still hoping for an off-the-shelf solution... > > J > ason > > > On Tue, Sep 10, 2013 at 4:38 PM, August Goers <aug...@luminalt.com> wrote: > Jason, > > It's funny that you bring this up because it is an issue that we constantly > face on commercial new construction. Commercial roofers want 8" plus for > their lead jacks plus the cricket often takes several inches above the deck. > > Many folks in the Bay Area are using Hollaender rail fittings with galvanized > steel or aluminum pipe. The advantage is that you can cut the pipe as long as > needed. The entire setup is very robust but a bit costly. Here's a link to > various types of flanges they offer: > > http://www.hollaender.com/?page=flanges > > And here's a solar-specific link: > > http://solar.hollaender.com/ > > I'm looking forward to seeing if anyone else knows about off the shelf longer > stanchions. Unirac used to make custom longer lengths of their steel standoff > but no longer offer it. > > Best, > > August > > > August Goers > Luminalt Energy Corporation > o: 415.641.4000 > m: 415.559.1525 > > From: re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Jason > Szumlanski > Sent: Tuesday, September 10, 2013 1:27 PM > To: RE-wrenches > Subject: [RE-wrenches] Flat Roof PV Attachments with Tapered Insulation > > Let me start be saying that I'm talking about mechanically attached > tilt-mount solutions capable of handling 172 mph design wind speed, ASCE > 7-10. Ballasted systems need not apply. > > We've used a variety of hardware for TPO membrane flat roofs, which is > becoming more and more popular around here. We've found that hardware bases > that mount on top of the membrane work well when there is a single slope in > the array area and the rails can follow the contours of the roof surface. > Ecofasten base plates spread the load out enough onto a DeskDeck roof board > or similar, and have proven to be pretty versatile. > > However, when you have center drains or other situations with multiple > slopes, it is advantageous to attach to the roof deck directly, typically > plywood here, particularly in new construction. Tapered insulation, decking, > and membrane can be cut around stand-offs and flashed nicely with 8" TPO > boots. This keeps rails parallel to the trusses/ground, and disregards the > roof membrane slope. The problem with this is that insulation can easily get > to be 6" thick, even on a small residential flat roof, requiring a minimum > 14" long stand-off to fit a standard TPO boot above the membrane. > > Long story short, what mounting systems are others using for this scenario, > and who offers long stand-offs? > > J > ason Szumlanski > Fafco Solar > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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