Gluedevil Cornice Adhesive Can Be Used To Bond Polystyrene Cornices And Other Decorative Products. Bond Polystyrene Ceiling Tiles, Roses, And Lightweight Wall Tiles To Most Construction Substrates Such As Cement, Gypsum, Plaster, Polyurethane, Polystyrene, Painted Surfaces And Wood. It Can Also Be Used To Fill In Holes And Gaps And Any Inconsistencies In The Cornice, Wall, Or Ceiling. It Has Strong Initial Grab And Can Be Painted Over With Any Suitable Paint. Cornices Must Only Be Bonded To Clean, Dry Surfaces That Are Free Of Any Loose Particles. For Best Adhesion, Roughen Walls And Ceiling With Sandpaper. Use A Clean Brush To Remove And Dust.