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Old 03-26-2017, 06:37 AM   #1
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Solar Rigid Panels VS Solar Flexible Panels....

Looking at having the install of Solar on our roof. Seen where some have gone to the Solar Flexible Panels with a self adhesive backing. Seen on EEZRV.

Look like great panels and would avoid drilling into the roof, however for the size seem to be a lower wattage. They were 200w each and the guy wired them in series with the proper controller.

Just curious for your thoughts on the roof mounted rigid panels vs the flexible panels.

Thanks!
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Old 03-26-2017, 06:41 AM   #2
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Quote:
Originally Posted by Kro1957 View Post
Looking at having the install of Solar on our roof. Seen where some have gone to the Solar Flexible Panels with a self adhesive backing. Seen on EEZRV.

Look like great panels and would avoid drilling into the roof, however for the size seem to be a lower wattage. They were 200w each and the guy wired them in series with the proper controller.

Just curious for your thoughts on the roof mounted rigid panels vs the flexible panels.

Thanks!
James
Many downsides to flexible panels. They scratch easier, cannot be tilted, they get considerably hotter than rigid as there can be no airflow underneath, etc. Heat is a solar panel's worst enemy (well, other than shade)
Only use them if you have no other choice.
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Old 03-26-2017, 06:44 AM   #3
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do you want solar or make believe solar.

there is tape now to hold the brackets to the roof
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Old 03-26-2017, 07:33 AM   #4
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VHB tape will avoid screws in the roof. Air circulation under a solar panel is a good thing. If you need to remove a glued down panel for servicing either the roof it itself it will be difficult.
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Old 03-26-2017, 12:32 PM   #5
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Vince I think the idea is glue the bracket not the panel flat to the roof
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Old 03-26-2017, 12:43 PM   #6
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For whatever it's worth, a friend of mine with a 2003 Phaeton bought and installed the adhesive backed solar panels on his coach while in Quartzsite this year. He tells me they're working just fine for him so far.

I have one regular solar panel mounted on my coach on my coach with a Blue Sky 2000-E 25amp controller and so far works great.

Good luck with your choice and safe travels.....
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Old 03-26-2017, 12:52 PM   #7
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I have used RTV silicone to attach solar panels. No holes, holds well but can be removed
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Old 03-26-2017, 01:30 PM   #8
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I have 4 Unisolar peel and stick panels on my roof. They were installed in May 2011. I get all the power I need to run my coach systems including a 36" 12 volt TV and a 12 volt BluRay player. Even on cloudy days or like now where I am parked in the forest and trees partially shade the panels, my 2 golf cart batteries are 100% full by the end of the day.

From what I've been told my monocrystaline panels are more forgiving of their angle to the sun and having one end shaded. We were in a massive hail storm in April 2015 and my roof was the only undamaged roof surface in a park with 100+ RVs. I lost my A/C shroud and fridge vent cover but the solar panels and 3 polycarbonate vent covers (previously replaced due to hail) survived unscathed and are still in use today.

I bought my solar panels from Amazon with zero knowledge of what solar really was. I just knew I wanted the versatility that solar offered. I boondock 7-8 months each year and rarely run the generator, but I carefully choose my travel to avoid hot weather.

Dumb luck led me to getting a great solar system. I did upgrade the charge controller and added a Trimetric battery monitor, but the four 68 watt panels are the originals that will soon be in use for 6 years.
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Old 03-26-2017, 01:37 PM   #9
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Quote:
Originally Posted by Kro1957 View Post
Looking at having the install of Solar on our roof. Seen where some have gone to the Solar Flexible Panels with a self adhesive backing. Seen on EEZRV.

Look like great panels and would avoid drilling into the roof, however for the size seem to be a lower wattage. They were 200w each and the guy wired them in series with the proper controller.

Just curious for your thoughts on the roof mounted rigid panels vs the flexible panels.

Thanks!
James
Given that there are rigid solar panels that are 40 years old and still producing power, I'd like to see some sort of comparative data for the flexible ones. That having been said, alas, there is none. There have been a few recalls, and some success stories, but at this point the product is too new (other than Uni-Solar) to make a call on whether or not the ease of installation also comes with anything near the longevity of high quality glass modules. My guess is that they won't because of deterioration of the plastics used in making them, but time will tell.

The Uni-Solar thin film modules have a decent track record, but are only about 6% efficient, compared to most Brand X glass panels that are at about 15% when new, under ideal conditions. This requires a lot more roof space, which is usually at a premium on RV's.
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Old 03-26-2017, 07:37 PM   #10
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check this out....



I sent a message off to Chris from Chris & G Travels... This is what he shared with me: "James, we love the setup. I just filmed a review and hope to have it posted soon."

I like the fact they seem so durable. Hail resistant and you can even walk on them.
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Old 03-26-2017, 08:10 PM   #11
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Quote:
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I sent a message off to Chris from Chris & G Travels... This is what he shared with me: "James, we love the setup. I just filmed a review and hope to have it posted soon."



I like the fact they seem so durable. Hail resistant and you can even walk on them.


I don't disagree that they have some advantages, if you have the space, and are willing to take the risk. Looking at the video, my first impression is that he's installing 200 watts of solar in a space that would accommodate 400 watts if traditional modules were used. However, if that's all the wattage that's needed, fair enough.
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Old 03-26-2017, 09:16 PM   #12
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Vince I think the idea is glue the bracket not the panel flat to the roof
Thanks, yes that is what I meant. Standard panels with mounting brackets. The mounting brackets adhere to the roof with VHB tape.
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Old 03-27-2017, 08:05 AM   #13
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Thanks, yes that is what I meant. Standard panels with mounting brackets. The mounting brackets adhere to the roof with VHB tape.
I think the model the OP has (37RLQS) does not recommend mounting them with VHB tape. Looks like he has rubber/TPO/EPDM type roof?
The OP would need to confirm the roof material.
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Old 03-27-2017, 08:28 AM   #14
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solar on the motorhome not the 5vr

thanks for the input. solar on the D/P fiberglass roof
the KOTR has EPDM roof. Not planning on putting solar on it.
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