Cobblestone Styrofoam Ceiling Tile 20 in x 20 in - #R25 - (Pack of 96) /259 sqft Goes Over Popcorn And Most Ceiling Surfaces Styrofoam 20x20 (259.2 sqft) Glue up Adds Insulation Easy Install Light Weight No Expensive Tools Needed Paintable With Any Water-Based Paint Installation Information: Installation Information Project Showcase R25 - Plain White Installed in Kitchen R25 - Antique Silver Installed in Living and Dining R25 - Plain White Installed in Bedroom R25 - Plain White Installed in Hospital