Got to the beach and found my cup holders full of water. Windows were up and doors locked, so I took a look at roof... This is a beach truck and lives right on back bay so when it's not on the beach it's still in the salt air 24/7. I'm only looking to get another year out of and was thinking I'd just get some of that rubberized metal roof tar and jus slap that up there and call it done. Any thoughts?