You've probably seen cars with their headliners falling or sagging behind the driver's head. This can be dangerous if it blocks the driver's vision. Having a professional upholster shop replace the headliner can be expensive. You can learn how to install a car headliner yourself by following these steps.
Remove everything that bolts into the headliner like visors, lights and coat hooks. These things are normally bolted to the ceiling through the headliner, making it impossible to remove the headliner with these things in place.
Take down the old headliner. You can grab it through the dome light hole or one of the other holes now showing. Be careful not to rip or bend the headliner. Slowly move it towards the rear of the car. You may have to remove some of the molding along the sides of the headliner.
Carefully take the headliner out through a door of the car. You may have to maneuver the headliner around the seats and steering wheel to get it out of a door. Be careful not to bend the headliner.
Peel the fabric off of the shell of the headliner. It should easily come off by pulling it with your hands. Use some sandpaper to remove any foam that remains on the headliner shell.
Lay the new fabric on the headliner in the correct position. Fold half of it back so the shell is visible.
Spray the adhesive glue on the visible side of the shell and on the underside of the fabric. Allow it to set until it has dried some.
Fold the fabric over slowly onto the shell. Smooth out any wrinkles as you go. Work your way to the outer corners of the shell.
Repeat the gluing procedure for the other half of the shell and fabric. Make sure to smooth out any wrinkles so the fabric doesn't completely dry this way.
Trim the left over fabric to 1/4 of an inch long. This will be hidden behind the molding of the car.
Install the headliner using the opposite steps you took to remove it. Slide it back into place, replace the molding and then the visors, lights and coat hooks.
