as for water sitting under if it is doubt it would go rusty as it would do the same in the cab except you have the lining in the cab roof Dave. 👳👳👳👍
No probs Bill type in double foil bubble wrap 👍👳👳👳
have you checked under the bubble wrap it may be collecting in small pockets and sitting there eating away at the body work funny thing condensation gets every where you dont expect