Solar Panel Installation
Posted 17 March 2011 - 03:17 PM
The kit came with fasteners that will mount the unit flush on the roof with no space ( 1/4" at best) below the panel.
Various articles suggest you need a 2 inch+ space to allow for airflow underneath the panel to keep it cool.
Can anyone provide some advice on the best practice for mounting?
2001 Damon Ultrasport
2003 Jeep Liberty Renegade (Blue Ox tow bar & Even Brake system)
Posted 18 March 2011 - 07:39 PM
That said, their are some panels that don't generate much heat or transfer much solar heat to the backing material. Presumably, if the manufacturer says zero clearance required, then that's the case.
But anything I mount on the roof with zero clearance has a healthy bead of Dicor self-leveling sealant under and around it. Regardless of the type material composing the roof seal, you don't want standing water captured under anything that will lead to corrosion and mildew. And a dirt catch that will cause side wall streaks with moisture.
With metal frame panels, "S bracket" mounts are best. Particularly if your roof is not perfectly flat. Then again, some panels flex and cannot use the S bracket type of mount.
Call the manufacturer and voice your concerns. Many times a telephone call to customer service makes a lot of difference.
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Posted 26 March 2011 - 11:52 AM
I used fixed aluminum angle iron mounts designed for the panels. I used 3/16" stainless steel rivets to mount them to the roof rather than screws. I just don't have much faith in screws not pulling out and tearing the threads whereas the rivets knob up on the backside of the roof and hold very well. Be sure to apply self-leveling sealant beneath the mounting pads as well as all over the top of them to prevent any leaks.
Mark and Leann Quasius
2007 Allegro Bus 42QRP, Spartan
2012 Jeep Wrangler Rubicon Unlimited
Posted 07 April 2011 - 09:30 AM
Posted 07 April 2011 - 10:52 AM
1997 Newmar Mountianaire DP
2004 Jeep GC
Posted 07 April 2011 - 03:04 PM
I use 3M 4200 instead.
Dianne and Brett Wolfe
2003 Alpine 38'
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Posted 09 April 2011 - 10:40 AM
Some details and photos of my installation are at http://www.damouth.o...arInstall.shtml.
If I'm boondocking in the same place for a few days, I tilt my panels up to maximize output. In winter, this can increase output by 40%. But on a windy day, the tilted panels are pushed pretty hard by the wind. So I made sure the attachment to the roof was very secure - see details on the website.
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