Install prehung exterior door units.

Installation should include

• hanging the door square, level, and plumb, with side jambs straight-edged
• applying shims at each hinge and at three locations on the lock side of the jamb
• ensuring that the door contacts its stops
• ensuring that the clearance margin between door and jamb is consistently to within +/- 1/16 inch.

Process/Skill Questions:

• How can an out-of-level head jamb affect the operation of a door?
• What are the most critical fastening points on jamb installation?

NCCER Carpentry Standards

Level Two, Module Six (27208-13): Doors and Door Hardware

Module Six (27208-13) describes the installation of metal doors and related hardware in steel-framed, woodframed, and masonry walls, along with their related hardware, such as locksets and door closers. A discussion on the installation of wood doors, folding doors, and pocket doors is also presented.