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How to frame a door

June 3, 2010 at 6:44 pm | Category: Remodeling Contractor



Framing a door is a simple task when you follow a few simple instructions. Decide where each door is to be located when you are installing studs, plates and shoes for a new wall. Follow these same basic instructions when you’re cutting a door through an existing stud wall. Use metal lumber connector brackets to make nailing your door frame together easier.
The 2×3 or 2×4 that is nailed to the floor to provide a base for the studs is referred to as a “shoe.” The 2x4s placed in an upright position to support the wall are referred to as “studs.” The 2×4 laid on top of the studs is referred to as a “plate.”
The size of this opening will vary depending on the size of the door you plan to install. A typical door opening is about 2’8″. Measure the door carefully and cut the opening to fit.
Next, cut and insert studs on each side of the door area. Make this opening the width of the door plus 6″. The extra 6″ allows for the width of the door facing on both sides.
Now, measure the height of the door to be installed. Cut 2x4s to the height of the door plus 1″. Install these studs on either side of the door as illustrated in.
There are two ways to finish the header area over the door frame. The first is to cut two 2x4s to a length equal to the width of the original opening and insert them to form a header above the door. Nail these header pieces together securely when they are placed in position.
Next, measure the distance from the top of the header plate to the ceiling plate and cut “cripple studs” to this length. Insert three cripple studs in the space above the door header as illustrated. Toenail these cripple studs to the header above the door and to the plate at the top of the studs.
The other method is to cut two 2x12s to a width of the original opening. Place 1/2″ plywood spacers between the pieces of 2×12 and nail them together. Insert them to form the header above the door.
Insert the door jamb in the space you have now created. This door jamb is normally purchased ready-cut for installation.
These pictures show the details on installing a door jamb and casing. These same parts of the jamb are installed whether the jamb is purchased ready-cut or is cut on the job.
In some cases, the casing on an outside door frame is nailed directly to the studs. In other cases, the casing is nailed over the sheathing. The thickness of the interior wallboard and the sub-sheathing determines how the door jamb is installed.
Insert a filler strip to make the door jamb fit the installation, if needed.
Add finish framing to the door after applying the paneling, drywall or other wall material. Head and side casings finish off the opening for the door.


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