Case an interior opening.

Casing should include

• keeping the bottom ends of the sides square and resting on the floor
• keeping a margin around the jamb edge
• fitting miters, with no gaps
• ensuring that all nails are set without splitting the trim.

Process/Skill Questions:

• What is a cased interior opening?
• What is the relationship of the floor covering to cased openings?
• What is the significance of the margin casing for the door jamb?