Most acoustical ceiling tiles are almost impossible to clean, if you do clean at best it is about 20%, problem is they are a paper product and when moist they damage, grow mold, water stain and sag.
Painting Ceiling Tiles When painting acoustical ceiling tiles, the paint will fill the pours (holes) that is for sound reduction and cause you to lose your sound reduction of the tile. In some cases painting tiles and grid can be a health violation and a violation of fire code.
Genesis Tiles & Grid never have to be painted and can be easily cleaned.