Stop Leak rubberized roof cement is a mastic compound. This material is a blend of selected asphalt, selected fillers, and petroleum solvents. This quality product is supplied in a smooth, easy-working consistency which adheres to wet or dry surfaces. It remains durable and flexible after application. This cement has a high resistance to weathering and provides excellent durability against normal building stresses and wear to which such a cement is normally exposed. Stop Leak rubberized roof cement has been especially developed for use under adverse weather conditions. The product is especially useful for emergency repairs over damp surface conditons and can be used for repairing leaks in metal, shingles, concrete, flashings, gutters, and around chimneys, downspouts, and eaves. Do not use over coal tar. Color: Black. No. PR360202: Container Size: 11 oz, Material: Rubberized Roof Cement, Type: Wet/Dry, Color: Black No. PR360042: Container Size: Gallon, Material: Rubberized Roof Cement, Type: Wet/Dry, Color: Black