How to Frame a Pre-Hung Interior Door

1-2 hours

Make sure your door opening reinforces the wall above and on both sides of the door. Here’s how.

Pre-Hung Interior Door

If you’re building a new partition wall that includes an interior door, you’ll need to frame the door opening properly. Save yourself the loss of time and money by purchasing the pre-hung door you want to install before you begin framing. That way, you can be sure the opening is wide enough.

This guide will show you how to frame a pre-hung interior door.

WHAT YOU NEED FOR THIS PROJECT

1
Nail top plate
Nailtop plate - Pre-Hung Interior Door

• On the ceiling, snap a chalk line to indicate where the top plate of the new wall will be installed.
• Cut the material for the top plate to length.
• Nail the top plate through the ceiling into the ceiling joists or blocking.

2
Mark and nail sole plate
Mark and nail sole plate - Pre-Hung Interior Door

• Mark the floor where the sole plate will be installed with a plumb bob.
• Nail the sole plate to the floor by driving the nails into the floor joists or blocking.
• Don’t nail the sole plate to the floor between the jack stud locations because this portion of the plate will be removed before the door is installed.

3
Cut and attach king studs
Cut attach king studs - Pre-Hung Interior Door

• Measure and cut king studs.
• Position them at the markings.
• Drive nails at a 45-degree angle to make a toenailed joint, or attach the studs with metal connectors.

4
Mark and cut jack studs
Markand cut jack studs - Pre-Hung Interior Door

• Measure the length of the jack studs to 80 7/8 inches.
• Mark and cut them to size.

5
Construct header
Constructheader - Pre-Hung Interior Door

• Make a header by fitting two 2 x 4s around a ½ inch piece of plywood.
• Cut the header to fit between the king studs.
• Install a cripple stud between the header and the top plate, halfway between the king studs.
• Toenail the cripple stud to the top plate and the side of the header.

6
Nail jack studs into place
Nailjack studs place - Pre-Hung Interior Door

• Position the jack studs against the inside of the king studs and nail them into place.
• Nail through the king studs into the header.

7
Cut portion of sole plate
Cutportion sole plate - Pre-Hung Interior Door

• Saw through the 2 x 4 sole plate at the inside edges of the jack studs.
• Remove the cut portion of the plate.