Press the piece firmly into place. If the molding is long or heavy, use a pneumatic nail gun with 18-gauge pins to hold it while the adhesive dries. Otherwise, use painter’s tape to hold it against the ceiling or wall for 2–3 hours.
Run a zig-zag bead of construction adhesive on the back of the molding. For larger pieces (like ceiling medallions), apply adhesive around the perimeter and a spiral in the center. cad decor paradyz
Ensure your wall or ceiling is clean, dry, and free of dust. If the surface is glossy, sand it lightly to help the adhesive bond. Press the piece firmly into place