The door should be set aside if it is in good condition and fits well in the door frame to be used as a template to cut the new door later. Then, remove the screws from the hinges and take them ...

Also insert shims into the gaps between the jambs and framing members and at the lockset and hinges every 12 inches around the jambs. Fill in any other gaps with loosely packed fiberglass insulation.

When you frame a door, you must use the straightest pieces of framing lumber that you can find. What’s more, you frame the door with a continuous bottom plate, just as the wall has a continuous ...