However it is quite rare for anyone to want to do this.
Should openig be same size as garage door.
How to frame a garage door 1.
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.
Pull a measurement from the floor of your space to the ceiling next to the door opening.
An opener with at least 1 2 horsepower is common for residential use.
Much more often homeowners seek to increase the garage door size to match vehicles that don t easily fit through the existing opening.
Frame the rough opening for the garage door to 3 inches wider than the garage door you have selected.
Cut four 2 x 4 trimmers to this length and nail two each to either side of the rough.
Getting the rough opening size right the first time will save you from frustration when installing your doors.
You should add 2 1 2 to the height of the actual door.
As i stated earlier you will want the finished opening to be the same size or slightly smaller than the door.
Once again it should be obvious that if you have an arched opening the height would be the same as the highest point of the arch.
Look for an opener that has the horsepower necessary for your garage door size based on size and weight.
Most entry doors are.
Garage door openers typically range from 1 3 to over 1 horsepower.
The standard height remains the same however at 80 inches.
This way the door will have a nice tight seal once the weatherseal or door stop molding is applied.
This lumber will be used to attach your garage door track and a portion of your assembly.
Framing rough opening sizes are really quite simple.
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.