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Thread: Solar install roof question

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    Solar install roof question

    Hi fellow travelers! I am going to install a couple solar panels on the roof of my 2010 North Trail 26RKS to keep the batteries charged during boondocking and when in storage.

    The question I have is how thick is the composite material on the roof? I recently had to replace a tail light and the material back there is about 1/4 in thick. I am planning to use rubber well nuts to attach the panel clips to the roof.

    http://www.ebay.com/itm/RUBBER-NUT-T...cAAOSwsW9Ywc5-

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    Iowa Chapter Leaders Silverado23's Avatar
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    Re: Solar install roof question

    Quote Originally Posted by Desertsky View Post
    Hi fellow travelers! I am going to install a couple solar panels on the roof of my 2010 North Trail 26RKS to keep the batteries charged during boondocking and when in storage.

    The question I have is how thick is the composite material on the roof? I recently had to replace a tail light and the material back there is about 1/4 in thick. I am planning to use rubber well nuts to attach the panel clips to the roof.

    http://www.ebay.com/itm/RUBBER-NUT-T...cAAOSwsW9Ywc5-

    If I remember right it is roughly 3/16" thick. I have a roof cross section sample that I can check to verify.
    Basically the roof is, 1/16" Rubber membrane, 3/16 OSB, variable 4" Foam , 1/8" interior panel

    When I did my solar panels, I just glued them on using butyl rubber adhesive and dicor on the edges. Thin film solar panels.

    By installation is in this thread.
    https://heartlandowners.org/showthre...r-installation

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    Re: Solar install roof question

    Thanks for the quick reply. I haven't been up on my roof but it appears that the fiberglass front wraps over the top. I can't tell if it continues on or not. I am bringing it home from storage tomorrow and will check it then.

    I am using a couple of Renogy 100W panels I used for a solar generator project.

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    Senior Member crazybanshee's Avatar
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    Re: Solar install roof question

    I just used some dicor under each mounting foot and used a screw into the roof. They have been up there for 10 years without an issue. No leaks.

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    Senior Member schew's Avatar
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    Re: Solar install roof question

    Quote Originally Posted by Silverado23 View Post
    If I remember right it is roughly 3/16" thick. I have a roof cross section sample that I can check to verify.
    Basically the roof is, 1/16" Rubber membrane, 3/16 OSB, variable 4" Foam , 1/8" interior panel

    When I did my solar panels, I just glued them on using butyl rubber adhesive and dicor on the edges. Thin film solar panels.

    By installation is in this thread.
    https://heartlandowners.org/showthre...r-installation

    Are you sure when you say 3\16"? Maybe you meant 3/8" as they don't make 3 \16 OSB.
    I cannot imagine the roof sheeting is 3\16". . If made with 3\16" sheeting it wouldnt be possible to stand on your roof inbetween rafters and not have your foot fall through..

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    Re: Solar install roof question

    Well, I'll have mine home this afternoon. I will find out then.

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    Senior Member Dennyha's Avatar
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    Re: Solar install roof question

    Yes, I believe the OSB is 3/8".

    Some have reported back that rubber well nuts did not perform as expected. Many, including me, have placed dicor under the mounting foot, screwed it down with 1" SS screws, and then more dicor over the screws. I have not read any cases where this practice did not perform well.
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    Senior Member Az_Ernie's Avatar
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    Re: Solar install roof question

    When we installed our Trav'ler Sat Syst, the wood paneling under the rubber roof was 3/16" (Heartland Eng. Drawing shows 5.2mm Luaun plywood). Not 3/8" OSB. It was such a concern that I purchased a mounting plate from Winegard to enlarge the sat dish's foot print. The plate was mounted to the roof with threaded nut inserts (can't remember grip length). Any place the roof was penetrated, Dicor was used to seal holes. The factory backing plate was located in a place on the roof that would not allow for the clearances that our Winegard Trav'ler required to rotate freely.
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    Re: Solar install roof question

    Quote Originally Posted by Dennyha View Post
    Yes, I believe the OSB is 3/8".

    Some have reported back that rubber well nuts did not perform as expected. Many, including me, have placed dicor under the mounting foot, screwed it down with 1" SS screws, and then more dicor over the screws. I have not read any cases where this practice did not perform well.
    In what way did the well nuts not perform as expected? I would expect them to hold the panels in place. I would not expect them to be completely sealed by themselves.

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    Iowa Chapter Leaders Silverado23's Avatar
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    Re: Solar install roof question

    Quote Originally Posted by schew View Post
    Are you sure when you say 3\16"? Maybe you meant 3/8" as they don't make 3 \16 OSB.
    I cannot imagine the roof sheeting is 3\16". . If made with 3\16" sheeting it wouldnt be possible to stand on your roof inbetween rafters and not have your foot fall through..
    Looking at the actual roof sample from a north trail 3/16 sheathing 1/8" interior panel and variable foam

    If you want confirmation on your unit you should be able to remove the interior from from a vent and move the roofing material out of the way to measure yours.

    Here is the roof sample that I have.
    Cross section crosssection.jpg
    Interior view CrosssectionSample.jpg
    Roof side without the rubber membrane Interior.jpg
    Interior material thickness InteriorThickness.jpg
    Overall cross section thickness measuredoverall.jpg
    Roof material thickness Roofthickness.jpg
    Last edited by Silverado23; 05-17-2017 at 04:59 PM. Reason: added photos

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