Ceiling Medallion InstallationBefore installing be sure to lightly sand and wipe material to avoid any dirt and impurities. This is important to obtain good adhesion and a smooth finish.They come primed white and ready to finish with a good quality oil or latex based paint.Place a solid bead of premium adhesive around and about the backside of the medallion. Pressing the medallion into place, it may then be secured with apneumatic pin nailer or 4 trim head drywall screws. Be sure to place the screws so that any holes created may be filled and sanded with minimal effort.3-5/8 hole1-5/8 projection