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.
Standard double garage door sizes rough opening.
Now all you need to know is how to properly frame your door rough opening.
So if you have a bedroom door that is 30 wide which is considered a 2 6 or 2 6 door just add 2 to the width and frame it 32 wide.
Standard double door opening size.
For height we are talking about 7 or 8 feet.
The standard size for double garage doors is 16 feet wide and 7 to 8 feet high.
While designing a garage and an opening for a door in particular always check your local building codes.
Next you will need to know your door height.
You should add 2 1 2 to the height of the actual door.
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.
Dimensions of such doors might start from 6 in width and go up to 18 with one feet increment and from 6 6 to 9 in height with 0 5 feet increment.
99 of the residential garage doors that we run across are different than these widths.
Just add 2 to the width of the actual door size.
This will give you room to space the door frame off of the sub floor.
If you are installing a 9 wide door the opening will be 9 3 wide.
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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.
Many home builders do not consider this a structural necessity but a style and price choice for the homeowner.
Standard garage doors in our area are 8 9 16 and 18 wide.
Garage door s standard sizes.
For an approximately 18 x 24 detached garage or one attached to your house the most often seen width is 16 feet.
Depending on your needs the height can go up to 10 feet.
If the door is 7 tall frame the opening 7 1 5.
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.
Many 16 x 7 garage doors will be designed with a pair of single 8 foot garage door bays separated by a central post or column.
16 garage doorway width the single door.
Standard single door opening size.
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.
Framing rough opening sizes are really quite simple.
Frame the rough opening to a height that is 1 5 taller than the door that you have selected.
Frame the rough opening to 3 inches wider than the garage door size you have selected.