Interior doors can become damaged, difficult to operate or old-fashioned compared to the rest of the décor. Replacing an interior door is a one-day project for one or two people.
Step 3: Remove the old door casing Typically a door frame, or door casing, is held to the studs with finishing nails that are driven into the frame near the hinges and directly across from the hinges. You can use a magnet to locate the nails. Remove the paint and putty covering the nails, and use a nail set and a hammer to drive the nails completely through, and out of, the frame. If this doesn't work, slip a reciprocating saw in between the door jambs and the filler material to cut the nails in two. Once the nails are removed or cut, remove the door casing. The door opening is now ready for the new door. Drive the nail out of the casing.
