After a 1000+mile trip found this piece of loose trim on my front drivers side door.

what is this adhesive (in pic), where do I get it, and how do I apply it for a factory finish. thanks.

 

You can get 3M double sided trim tape at any auto parts store that will suffice. I had the same issue and used the 3M tape with some clamps for a couple hours and it has held.

 

Literally just noticed this earlier this morning; and I log on to find this. Not happy you're dealing with the same; but happy there's a 'fix' for it.

 

Should I remove the pad shown, scrape underside surface clean, and then apply 3m or apply 3m to it as is?

 

Did the same to mine a few months ago.

 

I'd try to clean it as much as possible before applying.