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Old 02-21-2015, 04:49 PM   #1
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Solar systems

Hi, just got a Four Winds Hurricane with a fiberglass roof. How would I attach solar panels to it?
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Old 02-21-2015, 05:07 PM   #2
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Here is one way.

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Old 02-21-2015, 05:58 PM   #3
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Attached is a write-up of my solar and power system, to include panel mounting details.
Attached Files
File Type: pdf VSheetz - Solar Setup for my RV v1.1.pdf (473.7 KB, 149 views)
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Old 02-21-2015, 06:50 PM   #4
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Most people will flat mount them on brackets like pasdad1 is showing you. Others will mount them so that they can pivot up to face the sun in low-light situations. Important thing is to have about a 1" - 1.5" air space underneath them. Oddly, solar panels start to become less effective after they exceed about 88 degrees; the hotter they get the less electricity they produce. An air space will keep them cooler. \ken
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Old 02-21-2015, 07:54 PM   #5
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I didn't know if we can put screws into the roof not knowing what is under the fiberglass.
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Old 02-21-2015, 07:58 PM   #6
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There's not a whole lot under there. It is usually a 1/8" lujan/lauan board attached to the aluminum rafter/roof struts. The more contact points the better. Lots of good mounting hardware out there (the smaller the hole you have to drill, the better). Just be sure to seal each hole as you insert the screws and then again generously over the entire top of the base of each mounting bracket. \ken
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Old 03-02-2015, 05:42 AM   #7
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Quote:
Originally Posted by Pwhite View Post
How would I attach solar panels to it?
Howdy and welcome PWhite!

Some folks are basically sticking the panel to the roof. I followed the lead of some others and have used 3M 5200 adhesive to glue down the panel brackets.

My install is pretty new so no real good tests yet. If it starts to come lose, I'll just make a few wraps of duct tape around the motor home to secure them.

BTW: 'normal' 5200 takes a week to cure (which can be a real nuisance in cool temps).

P.S. Some people are using the 3M VHB (Very High Bond) tape with reported success).
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Old 03-02-2015, 07:08 AM   #8
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Check out some of the videos on this link to see just how strong VHB tape is. I saw a TV show showing the construction of the worlds tallest skyscraper in Dubai, and the glass windows were installed with only VHB tape holding them. Even in desert heat it was permanent!


http://solutions.3m.com/wps/portal/3...s/3M-VHB-Tape/
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Old 03-22-2015, 03:04 PM   #9
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I did not want holes in ours so we used semi flexible panels glued down to the roof.
On a previous RV we lost a panel as it ripped out from the roof.
Check out eco-worthy - good price and good service. We have 600W now and they are more efficient than our old setup.
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Old 05-31-2015, 08:24 PM   #10
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The fiberglass roof is very thin...I wouldnt trust gluing the panels down as any upward pressure could lift the fiberglass and causing a separation from the luan underneath. I plan on screwing mine down.


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