Polystyrene cornices have a smooth, white surface, which merges exceptionally well with white ceilings. To paint them, all you need to do is to apply a single coat of white water-based paint. ... To make it even quicker, you can opt to spray paint a quick coat of paint onto your polystyrene cornices.

What paint can you use on polystyrene?

Water based paints or acrylic craft paints are the best to use on Styrofoam. Water based paints, specifically poster paints, work well with younger kids as they can get a really good and thick coverage of paint on the polystyrene shape.

What paint do you use to paint polystyrene coving?

When it comes to coving emulsion paints are used, which are water-based paints that are used on interior walls & ceilings in matt, eggshell, silk or soft sheen finishes, depending on the finish of choice in the room.