How To Hang A Prehung Interior Door Split Jamb

How to Hang a Prehung Interior Door Split Jamb

Installing a new prehung interior door with a split jamb can be a relatively simple project, even for beginning do-it-yourselfers. Here's a guide to help you through the process.

Materials You'll Need:

Prehung interior door with split jamb
Trim nails or screws
Level
Hammer or nail gun
Pry bar (optional)

Instructions:

1. Prepare the Rough Opening:

Remove the old door and jamb from the rough opening.
Ensure the rough opening is square and plumb.
If necessary, make any adjustments to the opening to fit the new door.

2. Install the Split Jamb:

Position the split jamb in the rough opening.
Align the jamb with the level and secure it with trim nails.
Check for plumb and level at the top, middle, and bottom of the jamb.

3. Hang the Door:

Lift the door into the jamb.
Align the door with the jamb and ensure it opens and closes smoothly.
Secure the door to the jamb with trim nails.

4. Install the Trim:

Measure and cut the trim pieces to fit around the door.
Nail or screw the trim into place, making sure it overlaps the door jamb.
Countersink the nails or screws below the surface of the trim.

5. Adjust the Door:

Check how the door fits and make any necessary adjustments.
Use a pry bar to gently shift the door jamb if needed.
Trim the bottom of the door to fit the floor if it's too long.

Tips:

Mark the hinge side of the door and jamb before removing the old door.
Use a level throughout the installation process to ensure the door hangs correctly.
Don't overtighten the trim nails or screws, as this can damage the trim.
If the gap between the door and jamb is too wide, you can use shims to fill the space.
Paint or stain the trim and door to match your decor.