Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > Going Green
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 06-22-2021, 09:55 PM   #1
Senior Member
 
Monaco Owners Club
Join Date: Nov 2017
Posts: 1,437
Installing Residential Panels on RV Roof

Hi guys!

I picked up two giant residential panels for installing on the roof of our new RV. They are 82" x 40" each. Believe it or not, I have found space for them.

The plan is to put one across the roof at the front of the unit just after the front cap. The other can be placed length-wise with the roof on the left rear (as viewed from behind).

Each panel has an aluminum frame and each panel weighs 50 pounds. I don't know what the roof is made of but it has a grey rubber membrane on it. The unit is a 2020 Coachmen Pursuit 29.

So it looks to me that they will have to be screwed down. Can anyone recommend a particular method of attachment? I saw that Renolgy makes a really nice looking plastic kit that would support the panels in 6 places but it's designed to be glued down, by the looks of it so I suspect it's out of the question.

They also seem to make nice Z brackets so that looks like the early favorite. Any better ideas out there or is that about it? I was thinking of trying to get the panels in such a position that at least some of the mounts are screwed into the aluminum cross braces that span the roof at intervals.

Any thoughts or caveats would be appreciated. This is my very first attempt at solar so......
__________________
Bob Jones - 2000 Monaco Diplomat / ISC315 with Linnig Electromagnetic Clutch Fan
180 Degree Atwood Boiler...formerly Hot Water tank.
30km Range WiFi Solution
BobJones is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 06-22-2021, 10:49 PM   #2
Senior Member
 
Join Date: Feb 2018
Posts: 1,164
I would recommend 8 Z brackets for each of your very large panels. I used these stainless steel ones that hold the panels 3 inches above the roof.

https://www.amazon.com/Temco-Mountin...4423691&sr=8-1
__________________
Jeff--
Arctic Fox 22G w/1440 watts solar/GMC2500HD Double Cab with Leer Cap w/265 watts solar
astrocamper is offline   Reply With Quote
Old 06-22-2021, 10:53 PM   #3
Senior Member
 
TriMoot's Avatar


 
Join Date: Oct 2013
Location: Melbourne Beach, FL
Posts: 1,757
Blog Entries: 2
Hmm, would there be any issues with very strong winds possibly damaging the panels with all that space underneath?
__________________
___________________
2005 Newmar Essex 4502
1997 Suzuki Sidekick JX, Spokane, WA (Hoping to replace this soon)
1997 RexAir 32' Ford F53 Chassis, Banks system.
TriMoot is offline   Reply With Quote
Old 06-22-2021, 11:12 PM   #4
Senior Member
 
geordi's Avatar
 
Join Date: Jun 2018
Posts: 996
I suspect this is the kit from Renogy you are referring to.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

I bought two of these - for my three 40x80 residential panels, and am using just 4 supports per panel b/c the roof is slightly crowned in the middle. The panels are about 2" above the roof at the ends (laid across the roof) and just barely touching the roof in the middle. My roof is all aluminum.

I don't know about "glue down" but I don't trust that... So they are heavily siliconed down, but also with multiple #12 screws pre-drilled into the roof in addition. There may only be 2 #12 screws per corner into the panel's aluminum frame, but that's more than enough.

These have been rock solid through over 4000 miles of 70mph traveling now. Having them just a bit above the roof also allows for cooling ventilation, which increases the efficiency.
__________________
03 40' Monaco Diplomat: 1020 watts solar, Victron inverter. FASS, TRW steering, 23 cuft Frigidaire, D/W, W/D, Magneshade, Wood Floor, New cabinets, diesel heater
geordi is offline   Reply With Quote
Old 06-23-2021, 12:19 AM   #5
Senior Member
 
Monaco Owners Club
Join Date: Nov 2017
Posts: 1,437
Quote:
Originally Posted by astrocamper View Post
I would recommend 8 Z brackets for each of your very large panels. I used these stainless steel ones that hold the panels 3 inches above the roof.

https://www.amazon.com/Temco-Mountin...4423691&sr=8-1
Excellent. I'm looking into how to source them - seems that Amazon is out of them and waiting for more. I will have to check the roof again to be sure there is space for such a wide bracket (the foot looks to be about 1.75" wide). But those look to be very good and worth the wait/expense. On the front panel I have to fight for space with the satellite dish. It hasn't arrived yet so I can't say 100% that they will coexist with losing 3.5" of space for the both sides of the feet.

Quote:
Originally Posted by TriMoot View Post
Hmm, would there be any issues with very strong winds possibly damaging the panels with all that space underneath?
From what I've read it's a benefit to have the panels a bit higher as they run cooler and are easier to clean. They probably get more light on the backside too. It also looks like those brackets make it easy to remove the panel. As far as wind goes, I was concerned about that as well but suffice to say when I mount them, they will be solid - otherwise it doesn't get done.

Quote:
Originally Posted by geordi View Post
I suspect this is the kit from Renogy you are referring to.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

I bought two of these - for my three 40x80 residential panels, and am using just 4 supports per panel b/c the roof is slightly crowned in the middle. The panels are about 2" above the roof at the ends (laid across the roof) and just barely touching the roof in the middle. My roof is all aluminum.

I don't know about "glue down" but I don't trust that... So they are heavily siliconed down, but also with multiple #12 screws pre-drilled into the roof in addition. There may only be 2 #12 screws per corner into the panel's aluminum frame, but that's more than enough.

These have been rock solid through over 4000 miles of 70mph traveling now. Having them just a bit above the roof also allows for cooling ventilation, which increases the efficiency.
Those are the plastic mounts I was looking at. To me, they would be a very secure way to support the panel. Are you saying that you were able to bolt the mounts to the roof? My understanding is that they were designed to be used by people gluing them down.
__________________
Bob Jones - 2000 Monaco Diplomat / ISC315 with Linnig Electromagnetic Clutch Fan
180 Degree Atwood Boiler...formerly Hot Water tank.
30km Range WiFi Solution
BobJones is offline   Reply With Quote
Old 06-23-2021, 10:01 AM   #6
Senior Member
 
geordi's Avatar
 
Join Date: Jun 2018
Posts: 996
Yes, they have a flange at the bottom and I just drilled the plastic in that flange and put self-drilling #12 screws through into the roof. I also used a healthy amount of silicone as a seal and also adhesive, and the brackets are quite solid. Cleaning the roof prior to installation is key for good bonding.

As for "light on the back side" that's not a need or a benefit. There will be some light transmission through the panels anyway, but all of the work is done by the front side facing the sun. AIRFLOW however will increase the efficiency of the panels as the output drops when they run hot.
__________________
03 40' Monaco Diplomat: 1020 watts solar, Victron inverter. FASS, TRW steering, 23 cuft Frigidaire, D/W, W/D, Magneshade, Wood Floor, New cabinets, diesel heater
geordi is offline   Reply With Quote
Old 06-26-2021, 03:27 AM   #7
Member
 
Join Date: Sep 2017
Posts: 79
Here's a link to a similar project I recently completed. In it, I mention how I attached the panels. They are VERY securely on the roof.


https://www.irv2.com/forums/f56/proj...er-529010.html


Good luck!
Chris
SJ-Chris is offline   Reply With Quote
Old 06-26-2021, 07:17 PM   #8
Senior Member
 
Monaco Owners Club
Join Date: Nov 2017
Posts: 1,437
Quote:
Originally Posted by SJ-Chris View Post
Here's a link to a similar project I recently completed. In it, I mention how I attached the panels. They are VERY securely on the roof.


https://www.irv2.com/forums/f56/proj...er-529010.html


Good luck!
Chris
Hi Chris!

I saw that post and I liked it - nicely done. In fact, it inspired my install. The issue that I have is that the roof on this unit seems to have a thin rubber membrane cover. Think of it like thin flexible skin that can be lifted up. As such, it cannot be glued down - it has to have mechanical attachment.
__________________
Bob Jones - 2000 Monaco Diplomat / ISC315 with Linnig Electromagnetic Clutch Fan
180 Degree Atwood Boiler...formerly Hot Water tank.
30km Range WiFi Solution
BobJones is offline   Reply With Quote
Old 06-26-2021, 09:46 PM   #9
Senior Member
 
nvs4602's Avatar
 
Forest River Owners Club
Join Date: Jun 2017
Posts: 737
Anchors

I plan on using these Anchors when I do mine.

https://smile.amazon.com/dp/B07XGB1L...ing=UTF8&psc=1

I've use the on hand rails down a flight of stairs. I could lift myself up using the hand rail. These and a little dicor and I should be good to go.
nvs4602 is offline   Reply With Quote
Old 06-30-2021, 02:13 AM   #10
Member
 
Join Date: Sep 2017
Posts: 79
Quote:
Originally Posted by BobJones View Post
Hi Chris!

I saw that post and I liked it - nicely done. In fact, it inspired my install. The issue that I have is that the roof on this unit seems to have a thin rubber membrane cover. Think of it like thin flexible skin that can be lifted up. As such, it cannot be glued down - it has to have mechanical attachment.

Each of my panels has 7-8 Z-brackets to make sure they aren't going anywhere. The wood layer on top of my roof seems very thin, yet with this many brackets when I give them a pull (to test them) they feel rock solid.


Good luck!
Chris
SJ-Chris is offline   Reply With Quote
Reply

Tags
install, panel, roof



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Installing Solar Panels with VHB on fiberglass rough texture roof Entegrah Going Green 11 02-16-2021 10:07 PM
Best Method for Mounting Residential Solar Panels on a Fiberglass roof RVGlen Going Green 5 10-27-2019 10:34 AM
Difference between basement panels and side panels? pops2 National RV Owner's Forum 7 10-27-2014 03:35 AM
Installing Solar Panels on the Roof 69RoadRunner Newmar Owner's Forum 25 02-05-2010 09:10 AM
Installing Solar panels on 04 Adventurer 35u roof ??? RTZ6885 Winnebago Industries Owner's Forum 10 01-26-2005 09:29 AM


All times are GMT -6. The time now is 04:43 AM.


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