This was claimed in a description of industrial double-backed tapes I'd read years ago.
I believe it was one of the many 3M Very High Bond tapes being talked about. One of their tapes is what I would most likely use for permanently fastening solar panel mounting brackets to a smooth (fiberglass or aluminum) RV roof:
https://www.youtube.com/watch?v=-RTUo9AtIq0&feature=youtu.beThere are also Ultra High Bond tapes that are available ... but I don't know if 3M offers UHB tapes:
http://www.indasol.co.uk/#/uhb-structural-tape/4523846617
