We (AM SOLAR) use 3M VHB ( very high bond) tape for mounting panels when they go on a smooth metal or fiberglass surface.
There are other important considerations when using this type of mounting system.
I have 4 panels on the roof of my service van that are mounted this way and they have been there for 4 years........... no problems.
PM me if you need to know more.
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lewster
Solar Tech Energy Systems, Inc.
Victron Solar Components and Inverters, Zamp Solar Panels, LiFeBlue and Battle Born Lithium Batteries, Lifeline AGM Batteries
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