Center and level the first section after you install the brackets.
How to insstall a garage door.
The door must be level even if the floor isn t so use shims under the section to level it.
Attach hinges to the top of each panel image 2.
Door opening height and width headroom from top of opening to ceiling and back room length of garage.
Measure attach hinges and handles measure the various areas where the door will be installed.
If you re installing a two car garage door place a reinforcing bar on the top panel to prevent the door from bowing in the center.
The rubber gasket on the bottom section will fill the gaps created by an unlevel floor.
Next lower the panel into place and screw the corresponding part of the track to the door frame.
To hold the level in place tape it to the section.
To install a garage door start by placing the first panel in the doorway and installing the parts of your track according to the manufacturer s instructions.
For the headroom you should have about 10 to 12 of space depending on the spring system you re installing.