How to replace car headliner

Shelley, I did that and it was like a professional had performed it, but I had never did that before. Buy a can of aerosol headliner adhesive spray. Park the vehicle next to a patio, larger than the headliner. Remove all screws holding the headliner in place. Place the screws one by one on the patio just as they were when you took them down. I say this as sometimes the screws have different lengths and should go back in where you removed them. Next with both car doors open for maneuvering pull the headliner out, making sure which end goes back into the front. All other ends will take care of themselves when you place it back into the vehicle. The side of the tray that you usually DO NOT SEE, place it down on the patio, as you will be working on the side that has the headliner material. Gently remove the headliner material on one end and steadily work to remove it further toward all ends. Try to not tear anything,. Be very careful. The headliner tray is usually a composite material so try to not bend it or tear it at all or warp it. . However, if you do tear it a little, it usually can be fixed. After removing the headliner material, you are soon to be complete on this. Next, make sure all areas are clean and no debris is sitting on either the backside of the headliner material or loose pieces on the tray. Find the can of aerosol headliner adhesive spray. Spray the adhesive on every area where your headliner material touches the tray. Make sure to let it get a little tacky. Make sure to place the material in contact with that adhesive. Now, in getting it off of the old tray, it may have stretched some, so it may be somewhat longer in places. These longer areas can be neatly trimmed using any scissors that will cut the headliner material. Allow it to try, I ALWAYS let it sit there about an hour longer than I probably should have, just to make sure all areas are dry. Now, reverse the above procedures. Install the headliner back into the vehicle. Have at least one of the molding pieces handy so you can get that in place and a screw in to hold it, but leave it for now somewhat loose, not tightened all the way down. You can always go back and tighten all areas. When the last piece of molding is in place, the headliner should be pretty adjusted and correctly in place. You will be able to tell if it is tooooo much to one side or the other. Go back and tight all screws, but be careful to NOT overtighten, or one might break off, strip out and ruin the plastic or threads, etc. Congrats, you have just performed the job. It takes more patience than skill, believe me. Thanks!

The glue is failing. Try straight pins as a temporary fix. Eventually it will have to be stripped and replaced.

I sold the car! Seriously, when the headliner came loose just above the windshield, I just super glued it back (you can't see it). But when it sagged above both front seats, I knew I would have to have it replaced. In the meantime, I had been contemplating buying another car because I had a lot of miles on the one I was driving. Fortunately, I had done my research and one popped up before I really intended to start my search, so I bought it. So the headliner was not the reason I sold the car; I would have just replaced it.