When using a panel bonding adhesive make sure that you closely follow the manufacturer s directions are as failure to do so can reduce the strength of the adhesive and the bond between the two panels.
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.
Purchase a decent applicator gun to complete the job.
The best adhesive to use on a car door panel is non sag door skin adhesive from sem according to popular mechanics.
Panel bonding adhesive has excellent adhesion to a wide variety of plastic and metal substrates.
Minor fixes may get by on cheap glue but real repairs require reliable strength.