Application : Brush or roller only. For health and safety reasons related to all solvent-based paints, spray application is not recommended. STIR THOROUGHLY BEFORE USE. Apply 1 coat of the appropriate coloured Dulux Trade Undercoat, followed by 1 or 2 coats of Dulux Trade High Gloss. Allow a minimum of 6 hours for the undercoat to dry before applying the Gloss finish. Where a second coat of Dulux Trade High Gloss is required, allow a minimum of 16 hours between coats.