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Solar Panel Mounting

allen8106
Explorer
Explorer
When mounting solar panels on the roof of your rig are just screwing the mounts into the deck any old place or are you shooting the screws into the roof rafters?
2010 Eagle Super Lite 315RLDS
2018 GMC Sierra 3500HD 6.6L Duramax

2010 Nights 45
2011 Nights 70
2012 Nights 144
2013 Nights 46
2014 Nights 49
2015 Nights 57
2016 Nights 73
2017 Nights 40
2018 Nights 56
2019 Nights 76
2020 Nights 68
13 REPLIES 13

mchero
Explorer
Explorer
I used 8 Z brackets on my four full size panels. No issues in 20K miles, Not ONE budged. Don't recall hitting amy rafters.
Robert McHenry
Currently, Henniker NH
07 Fleetwood Discovery 39V
1K Solar dieselrvowners.com
2005 Jeep Grand Cherokee
Prior:1993 Pace Arrow 37' Diesel

CA_Traveler
Explorer III
Explorer III
allen8106 wrote:
CA Traveler wrote:
Many different mounting options.


I'm not interested in mounting options as I know how I`m going to mount them. I'm simply asking about placement of the screws. In the deck randomly or in the rafters.
The placement of the screws is part of the mounting considerations.
2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
750 Watts Solar Morningstar MPPT 60 Controller
2014 Grand Cherokee Overland

Bob

corvettekent
Explorer
Explorer
I did not even try to get a rafter. I did use 3M exterior double back tape and two screws in each bracket, and then covered with Dicor.
2022 Silverado 3500 High Country CC/LB, SRW, L5P. B&W Companion Hitch with pucks. Hadley air horns.

2004 32' Carriage 5th wheel. 860 watts of solar MPPT, two SOK 206 ah LiFePO4 batteries. Samlex 2,000 watt Pure Sine Wave Inverter.

allen8106
Explorer
Explorer
CA Traveler wrote:
Many different mounting options.


I'm not interested in mounting options as I know how I`m going to mount them. I'm simply asking about placement of the screws. In the deck randomly or in the rafters.
2010 Eagle Super Lite 315RLDS
2018 GMC Sierra 3500HD 6.6L Duramax

2010 Nights 45
2011 Nights 70
2012 Nights 144
2013 Nights 46
2014 Nights 49
2015 Nights 57
2016 Nights 73
2017 Nights 40
2018 Nights 56
2019 Nights 76
2020 Nights 68

Old_Days
Explorer II
Explorer II
I followed what mello mike did on his web site. I used 3m double sided tape with stainless steel screws. My front 2 screws did go in to the aluminum rafter cross piece, but the back 2 screws are just in to the plywood.

Snowman9000
Explorer
Explorer
BFL13 wrote:
One thing, however you locate them, is to be able to remove the panel without having to get the brackets out of the roof. Sometimes you have to check/fix the wiring under there.

Two Ls instead of a Z. (Or whatever I am trying to say ๐Ÿ™‚ ), Eg.


Yeah, I wish I had done that.
Currently RV-less but not done yet.

Colo_Native
Explorer
Explorer
here's what I made for mine there are 3 screws into the roof 1 1/2" angle and 1" flat bar the part on the roof 6" long and the one on the panel 3". these panels are 60 x36 and there are 3 sets on each panel.
2015 Winnebago Forza 34T
pushed by a 2011 Fusion Hybrid or 2020 Escape Hybrid
Retired DFD

BFL13
Explorer II
Explorer II
One thing, however you locate them, is to be able to remove the panel without having to get the brackets out of the roof. Sometimes you have to check/fix the wiring under there.

Two Ls instead of a Z. (Or whatever I am trying to say ๐Ÿ™‚ ), Eg.
1. 1991 Oakland 28DB Class C
on Ford E350-460-7.5 Gas EFI
Photo in Profile
2. 1991 Bighorn 9.5ft Truck Camper on 2003 Chev 2500HD 6.0 Gas
See Profile for Electronic set-ups for 1. and 2.

Snowman9000
Explorer
Explorer
Any old place. They've held for 6000 miles so far.
Currently RV-less but not done yet.

CA_Traveler
Explorer III
Explorer III
Many different mounting options.
2009 Holiday Rambler 42' Scepter with ISL 400 Cummins
750 Watts Solar Morningstar MPPT 60 Controller
2014 Grand Cherokee Overland

Bob

2oldman
Explorer II
Explorer II
any old place, but I have a 1/4" plywood roof. Yours may vary.
"If I'm wearing long pants, I'm too far north" - 2oldman

Fubeca
Explorer
Explorer
I found it difficult to line up with too many of the rafters. I made sure that one of my three sets of mounts on each panel hit a rafter. I used screws with the widest threads I could find and put three in each mounting bracket with a bunch of Dicor. The ones that didn't hit a rafter are just into the thin plywood of the roof.