Johnstone's Trade Aqua Water Based Satin is an innovative finish that's suitable for use on interior and exterior wood and metal, with a look and feel more like a traditional satin finish. It is quicker drying and has low odour, with a tough and durable finish that's at its best when used over Johnstone's Trade Aqua Water Based Undercoat. Available in thousands of colours, it covers around 10-12 square metres per litre, depending on the nature and porosity of the painted surface, and will be recoatable in normal conditions in under six hours.