The best adhesive to use on a car door panel is non sag door skin adhesive from sem according to popular mechanics.
Glue on door panels.
We have commonly seen panel bonding kits used to bond door skins roof skins quarter panels and truck bed sides in place.
There are a handful of things that need to happen to create a successful edge to edge glue up.
Minor fixes may get by on cheap glue but real repairs require reliable strength.
Panel bonding adhesive has excellent adhesion to a wide variety of plastic and metal substrates.
Containers of this adhesive can cost up to 65.