Flowlok Sil750 Mastic is an enhanced high-solids silicone formula that can be used in conjunction with a variety of liquid coatings and roof membranes. It is designed to create watertight liquid flashing for intricate roofing areas and details. With its low VOC’s, the single-component, moisture-cure liquid flashing is environmentally friendly. This high-performing high-solids silicone is durable, reflective, UV resistant, has excellent vertical hang, and performs well under ponding water.