Well I love the look of aluminum diamond plate and I continue to try to find a place to put some on my rv. That being said, I have done a lot of delam repair by removing the necessary moldings, prying up the filon and replacing the luan with new luan or the same thickness plexiglass with holes in it then clamping it with cargo bars against my garage. The adheasive I swear by is gorrilla glue for this. I believe it will last longer then the substrates. I line the idea of replacing the filon with al dimond plate. Make sure you do not cause any galvanic corosion. PS I am sure gorrilla glue will bond aluminium to aluminium (as strange as that soiunds.