A general purpose formulation for use as a cold-applied sealing and repair material in many types of asphalt roof membranes. Mule-Hide #211 Plastic Cement has a heavy “trowel-grade” consistency which makes this product ideal for flashing details and a variety of waterproofing repairs, such as moving joints and roof penetrations. Mule-Hide #211 Plastic Cement has a superior formulation that will not separate.