The SECUR Low-Level Flood Protection System utilizes Flex Seal Flood products, which are specifically designed to work together to create multiple layers of super-strong, waterproof protection, and to be easily removed after floodwaters recede. They can help slow down or even stop low-level water from entering structures. Flood Protection Spray is used as a final coat of protection to fill any small openings or pinholes that may have been missed in place of Flex Seal Liquid (when flooding is imminent and there is not at least an hour for liquid to dry). When used as a final coat, apply Flood Protection Spray on top of all previous layers of Flood Protection products. We recommend you use Flood Protection Spray as a top coating on our other Flood Protection products. You can also apply it to seal hard-to-reach areas, such as seams, windowsills, small openings, corners, irregular shapes and more. 17 oz Can Coverage—Approximately 67 linear feet when applied 8 to 12 inches from the surface. Suggested Use Location: Interior/Exterior; Material Form: Gel/Liquid; Base Material: Rubber; Product Packaging: Aerosol Can.