Hercules Roof & Flashing Sealant - 10.3 oz. cartridge

Not a roof coating or cement, but a specially formulated long-lasting sealant for plumbing applications. Forms durable, flexible, weatherproof coating around new and old flashings, cooling towers, skylights, downspouts, gutters, vents, chimneys, and general roof repairs. Adheres to concrete, metal, tile, roofing, and masonry, and withstands stress of dissimilar rates of expansion. No separation; no stirring time; no objectionable smell. Can be applied on cold or wet surfaces. Conforms to ASTM D-4586 Type 1 and ASTM D-3409. **Note: Not a coal tar-based product.