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.
Rough opening for 9 ft garage door.
Framing rough opening sizes are really quite simple.
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.
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.
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.
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.
When pricing your door you will need to price a garage door exactly the size of the opening so when calling around for price points be sure that you have this information in hand.
It should be obvious that you don t use twice the thickness for the height since you will not be putting anything on the floor but you have been reminded just in case this thought escaped you at the moment.
You should add 2 1 2 to the height of the actual door.
Frame the rough opening to a height that is 1 5 taller than the door that you have selected.
For residential homes 99 of doors are either exactly 7 or 8 tall.
Favorite answer 9 3 wide for the width and 7 11 2 for the height.
Cut four 2 x 4 trimmers to this length and nail two each to either side of the rough opening.
Just add 2 to the width of the actual door size.
Standard garage doors start at 7 tall and increase in increments of one foot.
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.
