If the headlining on the car has only sagged partially for example around the edges you could use glue.
Fix ceiling liner in car.
All you have to do is buy double sided tape.
Use a steam cleaner.
Make a note of the areas where the fabric wraps around to.
How to fix a car interior s falling ceiling step 1.
A sagging headliner can also be fixed using a tape.
How to repair a car roof liner.
After removing the headliner and peeling away the old fabric material use a wire brush to remove the old foam use a dust mask to protect your lungs.
Gluing is one of the easiest methods or repairing a sagging roof liner.
Use the steam cleaner and paint roller combo.
Remove anything that mounts to the ceiling through the headliner.
Steam cleaner and paint roller.
This method is useful if you hae extensive damage on the edges.
The double sided tape will stick to the roof s frame and to the fabric causing it to stick firmly back.
If the material of your liner is sagging partially.
If possible remove the liner so it makes less of a mess but if you cannot leave the liner in the car.
Either way use a wire brush to remove what foam is left if it s falling apart.
Using staples and hair spray.
It will best work if the fabric.
5 hacks to fix a sagging headliner quickly.
Unbolt the sun visors dome lamp grab handles and any other accessories that are attached to the ceiling.
Remove the upper seat belt mounting loops.
Remove and or pull back just enough of the side interior trim panels to gain access to the edge of the headliner.
How to fix sagging headliner without removing it.
Peel all of the old fabric off of the headliner board.
This includes dome light and map light.
Gluing the headlining back in place.
Pinning the sagging headliner.
Headliner fabric and a good automotive headliner adhesive can be used to completely restore your sagging headliner in an afternoon.
You can use it to make a quick fix almost anywhere in your house or in your car.