I'm surprised this hasn't really come up for us. I can't remember the last time we ran conduit along a pitched roof other than very short runs to an eave where we penetrate the roof and soffit to run down an exterior wall. I'm guessing you are dealing with an inaccessible attic. We just about always get into the attic right from the j-box location. I think I'd use the QuickMount solution if we had to do this.
Jason Szumlanski Fafco Solar On Mon, Sep 22, 2014 at 7:57 PM, Chris Mason <[email protected]> wrote: > In a hurricane region, we can't use glued supports. > Caddy supports are for flat roofs. These are 30 degree roofs. > I think I am going to use unistrut with two holes bored in it, washered > screws and sealant, and a HDG conduit clamp. > > > > > On Mon, Sep 22, 2014 at 7:49 PM, August Goers <[email protected]> wrote: > >> Hi Chris, >> >> >> >> There are a few common methods to run conduit along the roof surface. >> >> >> >> 1. Blocks made of Trex or another similar wood substitute with >> conduit fastened with 1-hole straps. Trex is typically only glued to the >> roof with roofing sealant (no penetrations) >> >> 2. A more professional support such as the Chem Link KnuckleHead: >> http://www.chemlink.com/index.php/chemlink-products/knuckleheads or >> Erico Caddy: http://www.erico.com/public/library/Fixing/LT1058.pdf - >> there are other manufacturers as well >> >> 3. Quickmount classic conduit comp mount: >> http://www.quickmountpv.com/downloads/datasheet/QMPV-datasheet-QMCC-Conduit-web.pdf >> >> >> >> For residential projects we typically use Trex. For commercial projects >> we typically use the Erico Caddy. If the roof is really steep and the >> blocks won't stay put then we use the Quickmount product. >> >> >> >> For getting through the roof we typically use a standard pipe flashing or >> a SolaDeck. >> >> >> >> Best, >> >> >> >> August >> >> >> >> Luminalt >> >> >> >> *From:* RE-wrenches [mailto:[email protected]] *On >> Behalf Of *Chris Mason >> *Sent:* Monday, September 22, 2014 2:43 PM >> *To:* RE-wrenches >> *Subject:* [RE-wrenches] Conduit supports on sloped composite shingle >> roofs >> >> >> >> I'm curious what methods people are using to mount, flash and stand-off >> conduit from the comp. shingle roofs. We don't do a lot of shingle, mostly >> metal and concrete, so we are less that familiar with the options. We used >> SnapNRack flashed mounts for the rail system, but they need a rafter under >> them and the conduit run will not be above rafters. >> >> As it is very hot here, I want to get some air between the conduit and >> the roof. >> >> >> >> -- >> >> Chris Mason >> >> NABCEP Certified Solar PV Installer(tm) >> >> Solar Design Engineer >> >> Generac Generators Industrial technician >> >> >> >> www.cometsolar.com <http://www.cometenergysystems.com> >> >> 264.235.5670 >> >> 869.662.5670 >> >> Skype: netconcepts >> > > -- > Chris Mason > NABCEP Certified Solar PV Installer(tm) > Solar Design Engineer > Generac Generators Industrial technician > > www.cometsolar.com <http://www.cometenergysystems.com> > 264.235.5670 > 869.662.5670 > Skype: netconcepts > > _____
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