Dulux Multi-Surface Primer is suitable for priming most surfaces inside and out, such as wood, metal and masonry. In certain circumstances specialist primers will be required e.g. highly resinous wood, galvanised steel and new plaster. Features: Number of Coats Required: One. Drying Time: 6 hours. Coverage: 11 m²/litre. Application Method: Brush. Cleaning: After use, remove as much paint as possible from brushes before cleaning.