iRV2 Forums

iRV2 Forums (https://www.irv2.com/forums/)
-   iRV2.com General Discussion (https://www.irv2.com/forums/f59/)
-   -   Solar panels on roof (https://www.irv2.com/forums/f59/solar-panels-on-roof-292180.html)

sampam 05-23-2016 10:06 AM

Solar panels on roof
 
Has anyone who that has put solar panels on there roof regretted doing so?
How would you install them? Semi flexible and glue them? Would it cause the roof to get too hot?

vsheetz 05-23-2016 10:09 AM

Six panels on the PA for a few years. No problems. Installed with the common aluminum L brackets with stainless screws into the roof. Lay down a pool of Dicor, place the bracket and screw, then Dicor over the screw.

JFNM 05-23-2016 10:32 AM

No regrets here. I glued my rigid panels down using L brackets and 5200 adhesive, fiberglass roof.

PJStough 05-23-2016 10:36 AM

Quote:

Originally Posted by JFNM (Post 3081479)
No regrets here. I glued my rigid panels down using L brackets and 5200 adhesive, fiberglass roof.

I used 3M 5200 fast cure and one screw per bracket to keep panel in place till the 5200 cured. Two of my three panels have been on for over five years with no problems. I have a fiberglass roof.

alvo 05-23-2016 10:43 AM

There's been a solar panel on my roof for 15 years. It's bolted to L brackets that are screwed into the roof. Although the panel absorbs heat because it's mostly black, it probably keeps the interior a tad cooler because it's about an inch above the roof and provides shade.

TonyDi 05-23-2016 11:04 AM

No regrets, just wish I had done it sooner.

Gilleshps 05-23-2016 11:15 AM

I've never met anyone who regretted putting solar on their rig. I've also used the 5200 on my fiberglass roof, and it works well. I recently added another 100w panel using 3M VHB double sided tape with tilt brackets. It's pretty amazing stuff too, 600 miles tested on that so far.

I like using tilt brackets, mainly for cleaning the roof under the panels.

twinboat 05-23-2016 11:19 AM

I used the same method as vsheets, but only 3 panels.

When I store for 6 months, I switch off the inverter and lock the doors. Batteries are charged 100% when I get back.

sampam 05-23-2016 11:48 AM

Wow thanks guys. Do you think it would work to 5200 glue the semi flexible panels directly to the rubber/latex roof?

Mr_D 05-23-2016 11:54 AM

Quote:

Originally Posted by vsheetz (Post 3081427)
Six panels on the PA for a few years. No problems. Installed with the common aluminum L brackets with stainless screws into the roof. Lay down a pool of Dicor, place the bracket and screw, then Dicor over the screw.

That's the way CC installed the panels on our rig and no problems have developed.

530ktm 05-23-2016 12:00 PM

Quote:

Originally Posted by sampam (Post 3081604)
Wow thanks guys. Do you think it would work to 5200 glue the semi flexible panels directly to the rubber/latex roof?

You may be the first to regret putting panels on your roof. :laugh: Just kidding but if you do this and you ever want to remove them or do roof maintenance you may have a problem. I used the 3M VHB on my home made brackets that can tilt and stuck them to my fiberglass roof and they are not going anywhere they shouldn't.

lonfu 05-23-2016 12:00 PM

had mine since 99, no regret's at all. wish they had been cheaper back then, would have added more.

alvo 05-23-2016 12:01 PM

This might help: 100 Watt 12 Volt Flexible Mono Solar Panel - ML Solar

"Can be affixed by adhesive, grommets, zip ties or velcro"

pasdad1 05-23-2016 12:05 PM

Quote:

Originally Posted by 530ktm (Post 3081629)
You may be the first to regret putting panels on your roof. :laugh: Just kidding but if you do this and you ever want to remove them or do roof maintenance you may have a problem. I used the 3M VHB on my home made brackets that can tilt and stuck them to my fiberglass roof and they are not going anywhere they shouldn't.


You can also use the 3M VHB tape to attach the flexible panels directly without a bracket. Then just use a thin wire to "saw" through the VHB tape if you ever want to remove them.

sampam 05-23-2016 12:44 PM

Thanks guys looks like we are going to get her done.

TateLMcD 05-23-2016 01:48 PM

I would suggest not using 5200. It is meant as a permanent bond and if you have a panel go bad it will be awful to get it back up. We have semi flex panels on our boat and like them, but on the rv I went with rigid since they are cheaper and you probably have plenty of good flat real estate on top. Renogy makes a nice z bracket for mounting. Personally I bedded our brackets with buytl tape letting the screws handle the clamping. Fiberglass roof.

PJStough 05-23-2016 01:53 PM

Quote:

Originally Posted by TateLMcD (Post 3081784)
I would suggest not using 5200. It is meant as a permanent bond and if you have a panel go bad it will be awful to get it back up. We have semi flex panels on our boat and like them, but on the rv I went with rigid since they are cheaper and you probably have plenty of good flat real estate on top. Renogy makes a nice z bracket for mounting. Personally I bedded our brackets with buytl tape letting the screws handle the clamping. Fiberglass roof.

I used brackets to tilt the panels. Not a problem if I have to remove a panel.

46490 05-23-2016 01:58 PM

Can you just splice into the existing wires from one solar panel to your additional panel and will the monitoring equipment handle the additional solar panel (s).

530ktm 05-23-2016 03:29 PM

Quote:

Originally Posted by 46490 (Post 3081802)
Can you just splice into the existing wires from one solar panel to your additional panel and will the monitoring equipment handle the additional solar panel (s).

You can use MC4 connectors to put multiple panels in place but also important is the size of the wire, the length of the run and the type of controller you are using. There is usually more to it other than simply splicing in another panel.

dverstra 05-24-2016 11:43 AM

I installed 4 new 100 watt panels and the install was simple. I purchased the panels and all install items from AM Solar. They sell the panels in kit form or just the panel. They have an aluminum bracket that is made to fit their panels. I recommend them.

becks 05-24-2016 12:16 PM

No regrets at all, only wish we had done it sooner. 1040 watts of solar, and as said, very happy.

twogypsies 05-24-2016 07:56 PM

Here's a video on one way to mount the panels. In our 'circle' of RVers, all use brackets. No one has glued them directly on the roof.

https://www.youtube.com/watch?v=77lLYVBFA0o

sampam 05-25-2016 10:58 AM

Thanks again everyone

TwelveVolt 05-25-2016 12:07 PM

Solar panels on roof
 
Since photo voltaic cells become less efficient as temperature rises, the panels are mounted with a cooling air gap underneath. Is there a difference in the design of the flexible cells to account for this as they are mounted directly to the surface? One salesman explained how they reflect more heat, but the way he described it sounded too much like PFM technology. Which are more efficient per square inch? Which have longer life expectancy?

keymastr 05-25-2016 12:30 PM

3M 4200 is just as durable but can be removed. 5200 will rip a hole in the fiberglass before it lets go.


All times are GMT -6. The time now is 04:54 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.