Replacing a Door

Help Around the House : Episode ARH-209 -- More Projects »
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Home repair expert host Henry Harrison shows how to replace an exterior door with a new pre-hung metal door. On his elbow grease scale of one to four, Harrison rates this project as a three.

Tools:

Phillip's-head screwdriver
flathead screwdriver
drill
pocket driver bit
prybar
level
reciprocating saw with metal-cutting blade
crowbar
pencil
hammer
knee pads
safety goggles
prehung door
doorknob
shims
treated wood

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Figure A (Click to enlarge)
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Figure B (Click to enlarge)
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Figure C (Click to enlarge)
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Figure D (Click to enlarge)
Steps:

1. First remove the door from its hinges by placing a screwdriver under the top lip of the hinge pin and tapping with a hammer to drive the pin out (figure A).

2. Carry the door away and remove the trim. If the trim is going to be reused take care not to damage it.

3. Remove the threshold and doorjamb. If the jamb proves difficult, use the reciprocating saw and the metal-cutting blade to cut through the nails, then pry the doorjamb off (figure B). Replace any damaged or rotting wood, as it will be against your new doorjamb.

4. Have someone assist in placing the pre-hung door in the opening. Make sure the door is level, and secure it tightly using shims (figure C).

5. Drill holes for hinges, and once everything's level secure the door to the support studs using screws. Insert the screws on the inside of the door opening to help prevent water damage. Cut the shims flush with the drywall.

6. Insert the door hardware and attach the faceplate to the frame.

7. Make sure trim is level and attach. Try to use existing nail holes for a neater look (figure D).