For a quick update pop old tiles out of the ceiling grid and replace with fresh ones.
Replace single ceiling tile.
If your grid holds 24 x 48 tiles try a scored product that s designed to look like 24 x 24 panels.
If they re glued directly on it will take some extra effort to remove them.
Use a utility knife to score the tiles then a putty knife to loosen and pull loose a tile for inspection image 1.
Investigate how the ceiling tiles are attached.
We simply removed all tiles in that corner to install replacement tiles.
Some ceiling tiles manufactured prior to mid 1970 contain asbestos.
If they were attached to furring strips the job will be easier.
With this style you won t need to purchase additional cross tees just pop out the old ceilings and place in the new.
Fortunately our damaged ceiling tiles were in a corner of the basement used as a laundry room.