This guide is intended primarily for our builder customers to explain in detail the measurements and condition we need the work site to be in to properly co.
Rough opening for 8 x 16 garage door.
If it s 9ft the opening must be 9ft 3 inches and so on.
99 of the residential garage doors that we run across are different than these widths.
Standard garage doors in our area are 8 9 16 and 18 wide.
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.
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.
Next you will need to know your door height.
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.
The height of the rough opening would be the height of the garage door plus the thickness of whatever you are putting underneath the header in addition to the thickness of the mortar etc.
For instance if the width of the garage door is 8ft the rough opening should be 8ft 3 inches wide.