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Author Topic: Mounting Solar Panels  (Read 1213 times)
Denny & Barb
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« on: June 25, 2012, 08:22:20 am »

Does anyone have experience with the proper way to mount solar panels to the roof of the PC? Kermit gave the the structure diagram.  But what caulking (maybe the same pourable that is on there?).

Also... what material is the roof made of.... some kind of plastic or fiberglass?  Mine (2012) has a wrinkle type finish.

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« Reply #1 on: June 25, 2012, 10:42:23 am »

Very little, but when I mounted my very small panel I was told to keep it up a little for some air flow under. My tiny panel, 15watts is just for a little help in storage.  I also have a 80watt portable panel, we do not dry camp to often. I was told the roof is Fiberglas. I would also suggest a google search for solar. There is a lot of good help here and online.
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ron.dittmer
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« Reply #2 on: June 25, 2012, 04:56:40 pm »

The white rippled roof material is a thin sheet of fiberglass.

You want to make sure the feet of the solar panel are large enough as not to damage the roof through focused pressure points.  How large is large enough?  I don't know.  Hopefully the solar panels come with good size feet.  I would think something in the 1" x 2" range would suffice.  A little bigger would be better yet.  I advise to place full-covering stick-on rubber feet before screwing it down so there is no direct contact between the metal feet and the fiberglass itself.  You must screw into the ceiling joists to get a firm mounting, but do NOT over-tighten the screws as you run a risk of compressing and deforming the roof.  Screw down nice and snug and let your caulk act as an adhesive.  Caulk 100% around each foot and also the screw heads to prevent them from coming loose.

I don't know what caulk to advise using other than 100% silicone window caulk that is typicaly used on houses.  I see it a good choice as it seals well, is long lasting resistent to drying out, UV protected, and offers great adhesion.  Home improvement centers sell it.  It comes in white to match your roof.

If we were retired dry camping a lot in the desert, I would mount two large solar panels to the top of our 2350.  But we dry camp most often where there are shade trees, and we seek them out wherever we camp, rendering solar panels semi-useless.  Still a big pair on our roof would be nice to have.
« Last Edit: June 25, 2012, 05:08:24 pm by ron.dittmer » Logged

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« Reply #3 on: June 25, 2012, 06:37:08 pm »

Did any of you notice the picture of Keelhaulers PC in the discussion "The Rally in Louisville and Our New PC". He has two panels on his roof.
I would think that the self leveling sealant sold at RV stores and used by PC would be a better choice than window sealant. Just my opinion.
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keelhauler
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« Reply #4 on: June 25, 2012, 08:45:09 pm »

I used "Go Power Adjustable RV rack" mounts. .
I also considered using "RV Solar Connection Dual Tilt RV Mounts"
Google both.
But really just 2 -1-1/2 aluminum angle about 2" long is fine.

I used the same roof sealant the Phoenix uses. Dicor I think. They gave me a tube. I made sure I hit the roof 1" square tubes shown on Kermits sketch and easy to find. Use a tiny drill first to make sure you hit. Unless you can move next mounts on the array to be 24" apart for the second set of mounts you could use some type of small wall anchors.
I had Kermit put some mounting plates in roof when they made the RV like they use to bolt cabinets etc. to hit my second set.
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ron.dittmer
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« Reply #5 on: June 25, 2012, 09:06:20 pm »

 
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I also like that he does not have the Wingard antenna.  That places the panels nicely between the front and rear tires for the least amount of road bump action.
« Last Edit: June 25, 2012, 09:11:39 pm by ron.dittmer » Logged

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Denny & Barb
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« Reply #6 on: June 25, 2012, 10:20:07 pm »

Thanks everyone... Going shopping tomorrow for the sealant.  I do have Kermit's roof drawing.

Thanks
Denny and Barb
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keelhauler
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« Reply #7 on: June 26, 2012, 07:27:49 am »

Quote
I also like that he does not have the Wingard antenna.

I actually have one. I had them move it to the back, fits nicely.

« Last Edit: June 26, 2012, 07:56:40 am by keelhauler » Logged



John
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« Reply #8 on: August 30, 2012, 02:20:48 pm »

Hi Folks,

Could someone who has Kermit's roof diagram post it somewhere on this site?

Thanks!
Bill
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Bill Cox and Diane Puntenney
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« Reply #9 on: August 31, 2012, 08:30:33 am »



2551 & 2552 but the microwave vent was moved slighly from this drawing.

I used the standard RV roof caulk to seal the holes for the solar arrays. Dicor
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John
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« Reply #10 on: October 19, 2012, 05:21:30 pm »

Cool diagram!  Thanks!  Are the red areas air ducts?

Bill
 
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Bill Cox and Diane Puntenney
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« Reply #11 on: October 21, 2012, 10:28:48 pm »

The red areas are metal plates that they laminate into the roof. So when they hang the cabinets inside there is someplace to screw them to. If they don't the cabinets will fall off the walls. If you see the note "Inside" it means it's there to mount things from the inside.
The square Aluminum tubes laminated into the roof are spaced every 2' and are exactly where the light fixtures are inside. They run the wires to these fixtures inside the tubes.

The vent for the microwave has been moved from this drawing when they went back to a Samsung Microwave.
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John
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