Rear section of liner is sagging and edge pulled away from interior trim. Liner is fabric.
How to fix sagging roof liner? on 1998 Ford Escort
the liner has seperatored from the board its approx 150.00 to repl at upholstry shop or as iv seen alot staple it in place for now. lol
The roof liner needs to be replaced. It may not cost as much as you might fear. Check with local Automotive Upholstry shops in your town.