Clean and prepare surfaces Mix plaster ingredients in trough to desired consistency Apply, level and smooth coats of plaster using trowels, floats, brushes and spraying equipment Trowel or spray coats of stucco over exteriors of buildings to form weatherproof surfaces Finish corners and angles and create decorative designs in finish coat, if required Cure freshly plastered surfaces Mould and install ornamental plaster panels, cornices and trim Spray acoustic materials or texture finish over walls and ceilings.