The ActiveWall magnetic-receptive primer is a high solids primer and therefore dries very quickly. Drying time will vary with temperature and humidity conditions. As a general guideline, allow the primer to dry to the touch (approximately 30-60 min) between coats and then 2 hours before applying a latex topcoat or at least 24 hours before applying an oil-based topcoat. Be sure to follow the instructions printed on the ActiveWall primer label.