FlintSeal is an all-weather asphaltic-based plastic cement that is engineered to patch splits, seams, and cracks in roof surfaces such as mineral surfaced cap sheet, smooth surface asphalt roofs, composition shingle, metal roofs, and spudded gravel. FlintSeal can also be used for repairing areas around chimneys, skylights, vent pipes, gravel guards, down spouts, splits in concrete, and expansion joints on roofs. FlintSeal will not sag, slip, or mud crack, and remains highly resilient and durable throughout all seasons. It is comprised of a homogeneous blend of high-grade fibers, select asphalt, minerals, plasticizers, and aromatic hydrocarbons. FlintSeal meets ASTM D 4586 and ASTM D 3409.