Standard garage doors start at 7 tall and increase in increments of one foot.
Garage door rough in size.
Some manufacturers offer width from 7 up to 18 with 1 increment.
If it s 9ft the opening must be 9ft 3 inches and so on.
The width of the rough opening should be 3 inches greater than the width of the garage door you are purchasing.
Begin by using a tape measure to determine the width and height of the door opening in inches.
99 of the residential garage doors that we run across are different than these widths.
Measure the head room the distance between the top.
For instance if the width of the garage door is 8ft the rough opening should be 8ft 3 inches wide.
Next measure the sideroom or space available on the left and right sides of the opening.
For residential homes 99 of doors are either exactly 7 or 8 tall.
Standard garage doors in our area are 8 9 16 and 18 wide.
First column in the above chart is in imperial system width x height in feet and second column is in metric measurements garage door width x height in centimeters.
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.
Next you will need to know your door height.
Most vertical track systems.
The size of the door will.
9 and 10 feet high garage doors are less common.
For instance if you have a 16 door and are using river stones that are approximately 2 to 2 1 2 you will want the rough opening to be roughly pun intended 16 6.