Can all you install a deadbolt in all metal doors.
Or are there some with foam core construction that you should not attempt installing a deadbolt.

If it is possible on a metal with foam core residential door (1987 construction)
Do the screws that hold the deadbolt to the edge of the door just go into metal only?

Check the template for dead bolt u want to use. It will tell u how to install and give thickness of door it will fit.

The hardest part will be installing the striker plate if the jamb is metal also.

U will need special drill bits to drill metal door.

If buying a new door, get it with the dead bolt already drilled.

Chuck

Most residential metal doors are clad over a wood inside. I just installed a new deadbolt in a metal door yesterday and the deadbolt side was wood. PIA to drill both holes.