If you are finishing the opening with 2x8 then the rough opening is 3 inches wider and 1 1 2 inches higher than the door or 9 3 x 7 1 1 2 etc etc.
Finishing garage door opening.
This will determine how long your trim will need to be.
Once all the trim has been removed you may close your garage door.
So the rough opening depends on how you are going to finish the opening.
In this video i install the wood.
Then measure the size of your garage door opening with a tape measure and write down the size.
I am framing in a garage for an 18 x 7 garage door.
Finished opening is the same size as the door.
How to measure the finished width and height use of 2x4s for the sides and header.
How to frame a garage doors opening in this case 9ft wide by 8ft tall.
Use a hack saw to cut the trim to the length you need.
How to frame a garage door opening for garage door.
In most cases the answer would be that you want to make the opening the same size as the door and that is the stock answer you will usually get.
Overhead garage doors need a place for the track and opener to bolt to.
Robert broome on march 4 2020 at 8 09 pm.
Re trimming a garage door opening is a small thing that a homeowner can do to make a huge impact.
You will need to measure both the height and the width of the garage door.