For residential homes 99 of doors are either exactly 7 or 8 tall.
Rough opening for 9 foot wide garage door.
For instance if the width of the garage door is 8ft the rough opening should be 8ft 3 inches wide.
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.
Frame the rough opening to a height that is 1 5 taller than the door that you have selected.
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.
You get the picture.
Standard garage doors start at 7 tall and increase in increments of one foot.
The width of the rough opening should be 3 inches greater than the width of the garage door you are purchasing.
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.
Step 1 measure the old door if you are replacing an existing door with one of the same size or the new door of choice if you are building a new garage.
If the door is 7 tall frame the opening 7 1 5.
Frame the rough opening for the garage door to 3 inches wider than the garage door you have selected.
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.
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.