The Resene Colorshop Semigloss White 10Litre is a n excellent choice for use on exterior timber and interior walls of primed galvanized steel or zinclume. It requires only 45 minutes of drying time.The Resene Colorshop Semigloss White 10Litre is a n excellent choice for use on exterior timber and interior walls of primed galvanized steel or zinclume. It requires only 45 minutes of drying time.