TOPCOAT Flashing - Spray Grade is designed to be easily applied with an airless sprayer. Like the TOPCOAT Membrane, it has superior adhesion, flexibility, and resistance to ultraviolet degradation. It is a light gray, water-based 100% acrylic elastomeric sealant which is applied to seams, fasteners, flashings, and penetrations prior to the application of the TOPCOAT Membrane. It is identical to regular TOPCOAT Flashing - Spray Grade with the exception of viscosity.