Formulated for interior and exterior use, the #3600 Acrylic Top Coat provides a high hiding, waterproof, tough and flexible finish. The top coat is especially useful where excessive moisture may be encountered. And, the #3600 coating also may be tinted to obtain pastel colors. #3600 as the finish coat over the #2500 is an option. We do recommend using it when you have a high moisture area such as baths and kitchens and when the application is exterior. The surface burning test results shown include the use of #3600 as a finish coat.