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Heavy-bodied blend of asphalt and inert mineral fibers for superior roof protection. Economical, waterproof cutback protective coating. Also used on downspouts, gutters, flashings, and foundations, and as a base coat for reflective coatings. Use on well-drained surfaces. Meets requirements of Federal Spec. SS-R-451, SS-A-694D, and ASTM 2823-75.