Painting New Plaster Cornice. paint along the top of the wall to the opposite corner. Getting the sheets to fit.
if you don't fancy watering down your paint you can also use dulux sealer for plaster. A week should be long enough to let it. Now go along all the edges before getting out a paint tray and a roller.
Cornice Mouldings Plaster N Paint Wellington Plasterer and Painter
The result is dry paint that won’t bond. Ensure that the wall and ceiling surfaces are clean, smooth and dry. Next, apply a coat of primer to the cornice using a small brush. painting a new gyprock plaster ceiling.