Premium grade mastic compound is a blend of selected asphalts, selected fillers, and petroleum solvents. Smooth, easy working consistency adheres to wet or dry surfaces. High resistance to weathering and provides excellent durability against the stresses and wear to which this product is normally exposed. Can be used for emergency repairs during inclement weather conditions, repairing leaks in composition, mineral surface cap sheet, asphalt coated, shingles, concrete, flashings, gutters, around chimneys, downspouts and eaves. Repairs most types of roof surfaces - metal, shingles and concrete. Coverage is 12-1/2 Sq. Ft. per Gal. 12 month limited warranty.