A rubberized protective coating that can be used to fill and seal leaks, cracks. Acts as a waterproof, flexible seal on metal, aluminum, PVC, masonry, asphalt roofing materials, vinyl siding, fiberglass and more. Usage: Remove grease, oil, dirt and other contaminants. Shake the container vigorously; The shuffle balls should move audibly for at least one minute. At the same time, shake it several times during the spraying process. Spray distance: about 30cm. Applies only when temperature above 0°C and relative humidity below 85% for best results. It is recommended to spray several thin coats to achieve the desired coat thickness. After use, turn the can and empty the valve.