Todd,
I don't have your answers, only the caution that "blue foam" to many of us with a construction background means extruded polystyrene or "blueboard", commonly used around foundations. It deteriorates with exposure to sunlight, so could only be used in an application such as this if protected from UV.
Allan

Allan Sindelar
[email protected]
NABCEP Certified Photovoltaic Installer
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder and Chief Technology Officer
Positive Energy, Inc.
3209 Richards Lane (note new address)
Santa Fe, New Mexico 87507
505 424-1112
www.positiveenergysolar.com



On 5/30/2013 4:14 PM, Todd Cory wrote:
wrenches,

i have a customer who purchased 20 used astropower ap75 modules. they are frameless and appear to have been previously mounted using four, 2" wide X 10" long strips of blue rigid foam, glued to the back of each module with some kind of adhesive.

two questions:

this seems to be a reasonable mounting system id like to repeat. would anyone familiar with this kind of mounting technique be willing to comment/speculate on an adhesive that would not degrade the tedlar backsheet? whatever was previously used worked great.

what kind of flat/smooth mounting surface would folks suggest the other side of the blue foam be attached to? the only thing i can think of is plywood, but that would rot over time.

thanks,

todd




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