Cut the header from 2 x 12 lumber and to a length of the rough opening plus 6 inches.
Rough opening for 9x7 garage door.
If it s 9ft the opening must be 9ft 3 inches and so on.
Frame the rough opening to 3 inches wider than the garage door size you have selected.
For instance if the width of the garage door is 8ft the rough opening should be 8ft 3 inches wide.
How to frame a garage doors opening in this case 9ft wide by 8ft tall.
Width of garage door opening standard widths are 8 9 10 12 14 16 17 and 18 height of the garage door opening standard residential heights are 7 7 6 8 header the header is ideally a minimum 12 wide micro laminated beam that spans the width of the garage door opening.
However if you are putting bricks thick river rock stones marble or anything else on both sides that is more than 1 thick you will want the rough opening the same.
Therefore making the width of the garage door rough opening the same size as the door would be fine if you are going to use a thin layer of stucco vinyl siding or 1 by lumber.
Width of rough opening the width of the rough opening should be 3 inches greater than the width of the garage door you are purchasing.
1 2 or 1 in one direction of the other will won t typically cause you to have to shop for a non standard garage door size.
The rough opening should be the same size as the door.
Take these measurements to your local installing dealer or retailer to purchase the clopay garage door that is right for you.
99 of the residential garage doors that we run across are different than these widths.
If the door is 7 tall frame the opening 7 1 5.
Install the header on top of the trimmers and nail.
Measure the width and height 1 and 2 of your door opening in feet and inches to determine the garage door size you need.
After installing the jambs your garage door opening should now be the same size as the garage door.
Frame the rough opening to a height that is 1 5 taller than the door that you have selected.
Next you will need to know your door height.
Nail or screw 2 x 6 jambs to the framing on the top first and then the sides of the rough opening.
Standard garage doors in our area are 8 9 16 and 18 wide.
This would allow you to frame and wrap and apply the door seal around the outside of the door after it is installed with 2 x 4 or 6 boards.
The rough opening is equal to the size of the door but you need to figure back head and side room before choosing and installing the new garage door.
If you are installing a 9 wide door the opening will be 9 3 wide.