For the headroom you should have about 10 to 12 of space depending on the spring system you re installing.
How to install a man door in a garage door.
Use the door shims if needed.
The door must be level even if the floor isn t so use shims under the section to level it.
Remove one screw from each of the hinges in the doorframe.
Install a new 6 panel fiberglass door and hardware.
The stripping is shaped like.
Door opening height and width headroom from top of opening to ceiling and back room length of garage.
Layout removal of drywall at new opening.
Lay the panel flat on a workbench.
Drywall patching on interior.
Running electrical for exterior light and switch.
Measure the various areas where the door will be installed.
Finish the door as directed by the manufacturer.
Center and level the first section after you install the brackets.
Next set the doorframe in the opening and center it in the opening.
The rubber gasket on the bottom section will fill the gaps created by an unlevel floor.
Order this size so the panels will be made slightly smaller fitting perfectly in the doorway.
Remove the door from the pre hung frame by removing the hinge pins.
Fill all nail holes with caulk and insulate with weather stripping where applicable.
Replace them with 2 inch deck screws for strength.
Use a drywall saw to cut shims or score them with a utility knife and snap them off.
The panels will be about 1 4 in 6 4 mm smaller than the opening step 2 lay weather stripping over the bottom door panel.
To hold the level in place tape it to the section.
Measure attach hinges and handles.
Install latches door handles and other hardware.
Use a tape measure to carefully record the length and width of the opening.
Step 1 measure the garage door opening before purchasing panels.
At a home improvement store purchase some rubber weather stripping.
Adjust the threshold for a tight seal as long as it is adjustable as directed by the manufacturer.