A water-based quick drying exterior undercoat that is flexible and dries fast. Specially developed for a climate that's quick to change, Weathershield Quick Drying Exterior Undercoat will deliver results to be proud of, achieving a great finish that will stay looking good for up to six years. Application information Coverage 16 m2/L Touch dry 1-2 hours Recoatable 2-4 hours Thinning: Thinning not generally required