When you just need the look of a basic plaster ceiling, then our 12-in x 12-in Washable White ceiling tile is the perfect solution. Apply it directly to the ceiling using Armstrong's Easy Up installation system or adhesive. Note: This tile may be cleaned by lightly wiping with a soft, damp cloth, or by using a vacuum hose with a soft brush attachment. Do not scrub, immerse, or soak tiles in water or use soap.