Let s get started with your framing 1.
How to frame a door in a garage.
Install a cripple stud between the header and the top plate halfway between the king studs.
Next your rough opening height should be 1 5 inches taller than the door.
Frame the rough opening to 3 inches wider than the garage door size you have selected.
So if your door is 9ft wide your rough opening should be 9ft 3 inches.
Back framing the garage door.
These doubled 2 4 s should extend to the ceiling on both sides to allow for the mounting of the end bearings and brackets.
After this you just need to bring in the opening size to the exact size of the garage door.
Make the rough opening 3 wider than the garage door also make the rough opening 1 5 taller than the garage door leave a headroom of 14 or 12 minimum install the header jambs and center pad of the frame using a 2 x 6 lumber for the header jambs and center pad leave at least 5 of space on.
Measure the distance from the bottom plate of the wall to a point that is 1 1 2 inches higher that the garage door height.
Drive a screw through the 2 x 4 wall studs into the ends of the header to secure it in place.
Next set the doorframe in the opening and center it in the opening.
Toenail the cripple stud to the top plate and the side of the header.
If the door is 7.
Doubled 2 4 s at minimum should be at each edge of the garage door to allow for the mounting of the tracks and jamb brackets.
The garage door rough opening.
If you are installing a 9.
Headers should be a minimum of 12 wide.
To finish the opening.
Frame the rough opening to a height that is 1 5 taller than the door that you have selected.
Place the header on top of the two 81 inch studs.
Frame the rough opening for the garage door to 3 inches wider than the garage door you have selected.
Make a header by fitting two 2 x 8s around a 1 2 inch piece of plywood.
Remove the door from the pre hung frame by removing the hinge pins.
Cut the header to fit between the king studs.