For a garage attached or detached from your house of around 18 x 24 feet most popular width for a garage door is 16 feet.
How to add height to garage door opening.
Double car garage doors typically start at 12 feet wide and move.
Cut two 2 x 6 pieces of lumber and attach to the face of the wall running from the edge of your garage door jambs to the ceiling of your garage.
Then the garage door would be 6 x 6 6.
Widening garage door opening in cinder block wall 6 answers hey i got a dilemma that is i have to increase a garage door opening from 7 feet to 12 feet and add a foot in height to the door from 9 to 10.
If you have an rv the door can go up to 10 feet.
Standard single car garage door widths start at 8 feet for single car garages and move up in 12 inch increments to 10 feet wide.
I removed some siding and and re did the trim on the top of the door and then recovered every thing with aluminum and installed new rubber garage door sill around the opening.
2 a double door.
As for the height it is 7 or 8 feet.
Pull a measurement from the floor of your space to the ceiling next to the door opening.
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.
This lumber will be used to attach your garage door track and a portion of your assembly.