They are typically 31 2 in.
Put header in for garage door.
Take some 2x4 s and use these to add 3 rows of supporting frames around the sides of the door and just below the header.
How to build a garage door header step 1.
Rip 11 inch wide strips of inch plywood using a circular saw.
The standard headroom for garage doors is 12 inches.
Wide by 16 in.
Together the headers king studs and trimmers act as a system that transfers weight from above down and around the window and door openings to the floor and foundation below.
Cut three pieces of 1 inch by 11 inch lumber to the width measurement of the garage door rough opening plus 12.
I don t want to move one of these beams around any more than i have to.
This allows the header to take the weight of your wall.
Deep by 22 ft.
Lay a single piece of the 1 inch by 11 inch lumber cut in.
Header requirement 2 at minimum the header should be 12 wide with doubled 2 4 at opening and ceiling running the width of the door with a 2 4 in the center of the opening for the center bracket to attach to.
However if you intend operating with a garage door opener 14 inches of headroom is recommended.
On my last job i didn t even take it off my truck s lumber rack.
Carefully measure the length of your door as the header must be at least 9 inches longer than that and at least 1 1 2 inches higher than the door.
Attach lumber to the face of the garage wall to the edge of the garage door header 7.
Go to your local building office and ask about the dimensions of the garage door header.
Push the new header into place.
The king studs nailed into the end of each header and the trimmers that butt just under the header combine to create a sturdy vertical support column.
If you are only opening the door manually that is enough headroom.
These will help to support the new garage door header.
This header should be an inch and a half higher than the garage door and 9 inches wider than the door.
Last pull a measurement from the top of the 2 x 6 piece of lumber that you just installed to the ceiling of the garage.