Add to that distance the length of track that is left once you open your garage door.
Making garage door higher.
If it was opening too quickly move it to the next lower hole.
If the door was closing too quickly move the spring to the next higher hole on the bracket.
So just get one new panel for each side if you need to raise it up a few.
This is the additional height your garage door will open.
How to adjust garage door height step 1.
Set up your step ladder beneath the garage door opener being certain the ladder is level and stable.
Because garage doors are usually sized to snugly fit the dimensions of the garage itself making the door larger usually means making the garage larger.
Step 1 lay the sheet of 5 8th inch plywood flat on the floor of your garage.
Adjust the springs on both sides of the door the same way.
If you have the clearance and feel like spending the money you ll be much better of with 8 doors.
One way to do it would be to get wall extensions for the entire the garage and then cut the roof of the garage off lifting it up to the height you want it.
I think garage door panels are sized in 3 increments.
It is possible to install larger garage doors to give you more room to function in your garage.
Locate the limit adjustments screws located on the side of the opener.
If your outdoor concrete is very un level then you may want a bigger bottom gap.
That is two 3 1 2 inch top and bottom studs plus two 1 8 inch brackets between plus 1 4 inch on the top and 1 2 inch on the bottom.
First class garage door repair does affordable quality garage door installation.
Standard garage doors can typically be converted to high lift if there is enough head clearance in the garage.
The vertical left right and two centers measurements should be subtracted by 8 inches.
If you drive a larger vehicle you may want to reduce the vertical length of the arched corners to allow your higher vehicle to fit into the garage.
7 1 from the back end of your horizontal track measure the distance of your high lift conversion.
At one corner measure down the four foot side of the plywood 12 inches and place a pencil mark.
Reinstall your track and bearing plate.