[RE-wrenches] Conduit supports on sloped composite shingle roofs

[August Goers]

Hi Chris,



See attached pic showing Quickmounts with strut on top for a commercial
project. The Quickmounts add to the installation cost but assure a long
term waterproof penetration.



Best,



August

Luminalt



*From:* RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] *On
Behalf Of *Chris Mason
*Sent:* Monday, September 22, 2014 4:57 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Conduit supports on sloped composite shingle
roofs



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 <august at luminalt.com> 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:re-wrenches-bounces at lists.re-wrenches.org] *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™

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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-- 

Chris Mason

NABCEP Certified Solar PV Installer™

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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