A copper tin ceiling installed with interlocking tiles that screw directly into popcorn (drywall) ceilings. Popular among homeowners, this DIY product is available in many colors and designs. Pattern #2 is the design being used is the most popular dating back to the early 1800's. To finish the installation, a classic egg and dart cornice runs the perimeter of the ceiling. Bath Crashers : Matt Muenster : DIY Network